jobsite evaluation estimating and preparation
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Once you have arranged for your contractor’s license(if one is required in your state) and have the appro-priate insurance coverage, you are ready to take onjobs — on your own or perhaps with a partner oreven with a bigger company. To make the most ofevery job that comes your way, you should focus onthree critical business steps — long before the firstpiece of wood flooring is installed.
Those three steps?• Evaluating the jobsite• Estimating the job• Preparing the jobsite.Before you sign on to any job, you should know
what has occurred on the site before you gotinvolved, what’s ahead and how you can best handlethe job. This publication will present the myriad ofquestions that need addressing and answeringbefore you commit to the job.
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Introduction:
Congratulations, contractors — you’re in busi-ness! You’ve invested in all the tools and equip-ment you’ll need for success in the hardwood
flooring trade. You’ve printed your business cardsand letterhead. You’ve painted your van or truck andgotten it in tip-top shape.
You may have spent a few years working for amore experienced contractor; you may have alsorefreshed your skills by attending one of the trainingschools offered by both the National Oak FlooringManufacturers Association (NOFMA) and theNational Wood Flooring Association (NWFA). Youmay have even “grown up” in the business with vari-
ous familymembers.
JOBSITE EVALUATION, ESTIMATING AND
PREPARATION
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The first contact with the customer
When a prospective buyer makes aninquiry, it was likely generated by one ofthe following: a referral; a lead produced
by you or your salesperson; a random call or drop-in, the source of which may well have been the Yel-low Pages; or even the result of someone seeing youworking on another job.
Whatever the source, take the call and respondprofessionally, promptly and cheerfully. By doing so,you’re quite possibly on your way to landing the job.
After hearing what the customer wants, you cantell him or her a bit about you and your company.Talk about what kinds of jobs you do and have donearound town. This is a good time to qualify the cus-tomer. Is the job the type and size that you are com-fortable with? Is the customer’s time schedule withinyour parameters? If the preliminary answer is no,you could tell him or her why you aren’t able toaccept the job. Then thank the customer and referhim or her, if possible, to another contractor.
If the customer’s answers are positive, and if youare serious about closing the deal and taking on thework, arrange to meet him or her — pencil, notebookand samples in hand. After all, the customer ismerely a potential customer at this point. Yes, yougot the customer’s call, but you may be biddingagainst other wood flooring contractors in the areafor a job.
ProfessionalismAs you meet with the potential customer, be profes-sional. Being professional means more than justknowing your job. Many things play a part in howthe potential customer perceives you and your com-pany.• Be on time. The customer’s time is valuable, and
so is yours.• Your appearance will give customers their first
impression. Dress neatly and in appropriate workattire.
• Be sure to have all the necessary items (paper,pencils, tape measure and estimating forms, forexample) with you to complete the job at hand.
• Be courteous and polite. A professional and per-sonable attitude will make the potential customerfeel good about doing business with you.
Make the customer comfortableYour meeting with the customer may take place in ashowroom — allowing you to more easily supple-ment your selling with actual samples. Or, it couldtake place in the customer’s home or other locationwhere he or she wants to install hardwood flooring— allowing you to gain insights into the workinvolved. Do not be negative about things that “won’twork.” Be polite and a good listener. Let the cus-tomer tell you what he or she wants. Try to put thecustomer at ease.
Before you can even start talking prices, it’s nec-essary to schedule a visit to the potential jobsite. It’simportant to learn some details about the prospec-tive job and what the customer expects the endresult to look like. After you have observed the job-site conditions and taken your measurements, askany questions you might have.
There are numerous details to consider when bid-ding for and taking a job. Most of them are summa-rized in the NWFA Jobsite Checklist included in thispublication.
Ask yourself the following questions:• Who is the customer? An established home-
owner? A builder? A young family with severalactive children? How much money do they expectto spend on this project?
• Is the job residential or commercial? Is it a new orexisting building?
• If residential, where will the flooring go? In thekitchen? The more formal areas of the home? Thebasement?
• If commercial, is it for private offices, or for ahigh-traffic area, such as a restaurant or retailstore? What will the maintenance routine be?
• Is the job in a high-rise building? Are sound con-trols necessary?
• Is the home being remodeled? Will the customer’sfamily be at home while you work around them?Who is responsible for moving furniture andapplicances?
• Once you know the parameters and the physicalnature of the place, ask for more details: Will thefloor be over concrete? Over radiant heat? Over acrawl space? What is the condition of the subfloor? These questions may come off initially as dull to
the customer, but they’re necessary as the job’slogistics formulate in your mind.
But now come the more exciting questions — theones the customer’s been waiting for.
EVALUATING THE JOB
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Customer expectationsBefore you go any further, however, make sure yourcustomer’s expectations are in line with what yourwood flooring installation can deliver. Keep the fol-lowing points in mind:• Do not oversell the job.• Explain the natural beauty and characteristics of
hardwood flooring and that each piece is unique.• It’s easier to explain wood flooring’s characteris-
tics — expansion and contraction, and color andgrain variations, for example — before you startthe job than at the end when you are trying tocollect your payment.
• Provide samples with the stain color and finishyou will be using.
• Discuss the use of the room — pets, children andparties, for example — and the ultimate effect ofthat use on the floor.
• Discuss proper maintenance procedures with thecustomer. Talk about scratching, fading andambering.
• Do not underestimate your customers’ needs andexpectations. Make sure of your ability to satisfythose needs and expectations before starting.Educate your customer as to reasonable expecta-tions for hardwood flooring.
• Tell the customer about the need for environ-mental controls during installation, acclimationand finishing, as well as during the lifetime ofthe floor.
The product presentation:Which floor? If you sense that the customer’s flooring choice is notgoing to work, then you need to explain why andoffer an alternative. This is where your knowledge ofthe available products and their application comesinto play. The customer knows he or she wants woodflooring. You, the contractor, know wood flooring. It’sup to you to walk the customer through the hun-dreds of choices at his or her feet. The more edu-cated you appear, the more confidence you will instillin your customer. Take the time to educate yourselfon the multitude of choices available and your salespotential will increase.
PatternThe floor’s pattern is the initial consideration. Theoptions: Strip (usually in the standard 21/4-inchwidth); plank (usually between 3- and 7-inches); andparquet, which presents an endless choice of geo-metric designs.
Many floors use the strip product, but many othercustomers opt for plank or parquet for particularreasons. If plank is chosen, the next question needsto be: Does the customer want square-edges or V-joints (bevels) on the face? There are differences and
advantages that the customer needs to be told. Forexample, square-edged flooring in, say, the kitchenmakes for easier cleaning. However, wider square-edged planks may show cupping. Thus, in certainenvironments, it’s best to go with beveled edges withwider planks.
With parquet, the customer needs to understand
how the scale of the pattern relates to the installa-tion area. Parquet patterns can make a room feelgrand and formal, but too many repeats of the pat-tern may make the room seem too busy. When thecustomer is considering a particular parquet pat-tern, let the customer take his or her time! Youshould show a picture of how the pattern works as itrepeats itself throughout the room.
Another option: Might the customer want to cus-tomize the installation with a border or medallion orother decorative inset in the center of the room?
EDUCATE THE CUSTOMER
Standard 21⁄4-inch strip, laid diagonally
Random-width plank
Block parquet pattern
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SpeciesNow comes the species choice. Does the customerwant to go with a domestic wood or an “exotic” —that is, an imported wood? If the customer wants oak— which constitutes more than 80 percent of woodflooring in America these days — then it’s largely amatter of red oak or white oak. Make sure your cus-tomer sees the difference between the two.
If the customer wants a species other than oak,then it’s time to look at four factors — a wood’sappearance, cost, hardness and stability. All the bet-ter if you can show samples of various woods as youtalk about them. If the customer wants some time toconsider the species options, you might want to givehim or her a copy of Wood Species Used In WoodFlooring, one of the technical publications in thisseries. The look and properties of some 22 differentwoods, both domestic and exotic, are detailed in acustomer-friendly form there.
[For information on how to obtain copies of WoodSpecies Used In Wood Flooring (A200), contact theNational Wood Flooring Association at the address orphone numbers listed on the back page of this publi-cation.]
Cost may be the biggest consideration for the cus-tomer — very few woods are less expensive than oak.But if the circumstances suggest, it may be smart topoint out qualities of hardness — high-traffic areasmay not be suitable for softer wood species. Or, youmight talk about stability if you’re working in aregion where seasonal humidity swings could causemovement in the floors. Some species are moredimensionally stable than others and therefore lesssusceptible to movement as a result of humiditychanges.
GradeThird, after the pattern and species are chosen, talkabout the wood’s grade. If you’re going with oak,explain NOFMA’s four grades for unfinished oak —clear, select, No. 1 common and No. 2 common — orthree grades for prefinished oak — prime, standardand tavern. If you’re going with maple, explain themaple grades — 1st, 2nd and 3rd — used byNOFMA and the Maple Flooring ManufacturersAssociation.
There are grades for most other species, as well,and many manufacturers of flooring also have pro-prietary grade names.
Show samples, and point out the differences inthe appearance and allowance for natural charac-teristics in the flooring. Does the customer want aclean, “pure” floor? Or does he or she want aknottier, “busier” floor that creates a rustic look?The grade that the customer ultimately chooseswill make a difference in the price. By explainingthe industry’s grading standards in advance, youare establishing a realistic expectation in yourcustomer.
CutOnce the grade is decided, it’s time to choose thewood’s cut — or its grain pattern. Plainsawn, quarter-sawn or riftsawn? Plainsawn wood is the most typicaland least expensive. It’s also probably what the cus-tomer is most familiar with. Quartersawn and rift-sawn flooring are often found in older homes. Theyare rarer and, accordingly, more expensive. They tendto be more dimensionally stable than plainsawn.
Again, just like the grade, the customer’s decisionin his or her flooring’s cut will reflect a difference inthe job’s cost and what it will end up looking like.
LayoutHere is one of the most dramatic decisions a cus-tomer can make. A conventional layout — wall-to-wall — is the simplest way to cover a floor, and themost traditional. For a more decorative look, the cus-tomer can choose a framed layout — two, three orfour boards wide, depending on the size of the room.This can get intricate: How will the corners meet? Asmitered joints or lapped, as in a log-cabin? Also, adiagonal layout may be appropriate for some rooms.
As we discussed in the Pattern section, will yoube using special in-lays in the corner, or perhapsaround the edge of the fireplace? Can a feature stripin a contrasting species be carried around the wholeroom? Consider a medallion or other artistic touchfor a focal point?
Engineered/laminated or solidIs the installation below grade? Humidity or mois-ture may be a problem. Is the floor height matchingto other floor coverings critical? Is the installationover wood joists or over a concrete slab? These vari-ables will dictate which product is best for your cus-tomer — engineered/laminated or solid.
Prefinished or unfinishedWhich is more important to the customer — speed ofjob completion or multiple options? The customer canhave a prefinished floor more quickly and with lessdisruption. Or, with unfinished flooring, he or she canhave more choices in terms of species and colors.
Follow upIt will take time for the customer to consider all theseoptions. But by the time he or she decides, you’recloser to the sale. While the customer is thinking,“What will my floor look like?” you need to be think-ing, “How will I best handle all the job’s logistics, inorder to give the customer the floor he or she wants?”
All these customer choices will figure into your sell-ing price. But don’t jump to that just yet, becausethere’s still so much more to be learned about the job.
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Providing an estimate for a job — How muchshould I charge? — is both subjective (that’sthe sales part) and objective (the mechanics of
gathering information and churning out a number).You want to deliver an estimate that gets you both asigned contract and a job that turns a profit.
Let’s look at the subjective part of estimating first.Once the customer has clarified what kind of floor heor she wants, the next step is working up a bid. Con-cerned that the customer might ask another con-tractor to bid the same job, once you’ve walked himor her through the process of sensible choices?Here’s where professionalism plays a big role: Gener-ally, the contractor who listens to the customerand then gets the bid to him or her in a timely fash-ion, with a valuation of service included, will havethe edge over the competition.
The objective aspect of estimating a job encom-passes following a checklist, being aware of the con-ditions of the jobsite that will affect your work andthe performance of the wood.
The paper trail beginsHow much time do you spend on an estimate? Whatyou’ll be giving the customer is a charge for the workyou’ll do, as outlined in the bid. Accordingly, spendjust enough time to interact with the customer,gather your information and get the bid out. Thenit’s either time to sign the contract and start the job,or else move on to the next bid.
Some more questions you will need to ask upfront: • Who is the job billed to? The address and phone
number? • Who is the legal owner of the property?• What is the jobsite mailing address, zip code and
telephone number?These answers should come easily from your initial
conversation. Should you get the job, they will proveimportant for the following reasons: If you are notworking directly for the owner, you will need this infor-mation to file a preliminary notice to protect your lienrights. You also may have to tell another person howto get there (a supplier or another worker, for exam-ple). You may have to call the jobsite someday, andyou will have all the information in front of you whenyou pull out the job ticket.
You don’t need to spend all day at the potentialjobsite initially; just long enough to scout the siteand learn about any unusual characteristics. Writethe specs and information as you go. Once youleave, it is costly to go back if you forgot to ask aboutsomething. Even worse — and not at all to your ben-efit — is having to guess at what you saw at the site.A wrong guess can be costly.
Checking for moisture - inside and outBefore flooring can be installed, the new construc-tion or renovation project must be very close to com-pletion. All excessive building moisture must beeliminated. A more detailed discussion of how mois-ture affects wood flooring is contained in the Waterand Wood technical publication in this series.
[For information on how to obtain copies of Waterand Wood (A100), contact the National Wood Floor-ing Association at the address or phone numberslisted on the back page of this publication.]
Ensuring that moisture conditions are met meansthe building must be roofed, walled and windowed,and the heating and air conditioning units should beoperating. Ideally, a flooring installation should pro-ceed only after the interior atmospheric conditionsare established at normal living conditions.
Here is a visual checklist for clues for potentialsources of moisture:• On new construction, check blueprints for land-
scape details.• Check the eave overhang on the building. Is all
rain water funnelled away from the foundation? • Check the gutters and downspouts. Is all rain
water properly diverted away from the founda-tion? During a rain, the depressions below thespouts can fill with water that will eventually findits way indoors.
• Are there raised flower beds or planter boxesadjoining the building’s foundation? If so, a spe-cial moisture membrane should be installed. Arelandscape sprinklers directed away from thehouse?
• Is there an outdoor pool or body of water elevatedabove the home’s foundation that could overflowor leak into the home’s foundation?
• In a crawl space, the square footage of theperimeter vents through the foundation should beequal to 1.5 percent of the square foot area withinthe crawl space? Vents must be open to allowproper cross ventilation?
• Is the soil within the crawl space properly coveredwith 6- to 8-millimeter black polyfilm moisturebarrier?
• Do outside doors and windows appear to be prop-erly caulked and weatherproofed?
• Is the concrete slab’s moisture level suitable forinstallation? Conduct a moisture test beforeinstallation. (Refer to Water and Wood for a moredetailed discussion.)
• Is there a 6-mil polyfilm moisture barrier or equalbeneath the slab?
• Are all major appliances and systems properlyvented to release warm, moist air? Visually
ESTIMATING THE JOB
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The NWFA Jobsite ChecklistThe NWFA offers the Jobsite Checklist, an exampleof which is included in this publication. (See page12.) It lists an array of points that should beaddressed. The NWFA has printed copies of the formavailable for purchase in bulk. For more informationon ordering the forms, contact NWFA at the addressor phone numbers listed on the back page of thispublication.
Making notesWhen you arrive at the jobsite, begin the paperworkprocess by making notes.• What is the driving time to the site?• On a commercial job, how is the parking? Will
you have to pay $20 per day in an office complex?If you park on the street, will you need coins forthe meter throughout the day?
• How is the access for delivery of materials andequipment? (You will want to know beforehand ifyou have to carry a sanding machine up 50steps!).
• If the jobsite is in a commercial or high-rise build-ing, where is the loading dock?
• How big are the elevators for loading materials?Are they tall enough for your needs? When arethey accessible?
• If installation is in a multifamily dwelling, whathours are available for construction work?
• Is there power? (Where do you hook into for 220volts? Do you need a booster?) Does an electricianhave to hook you up for power from the mainsource? If so, have a pigtail delivered a day inadvance, so you do not have to lose time.
• How will trash removal be handled?We suggest you write everything down at this
point, highlighting those items that strike you asabnormal or that may incur additional costs.
Crunching numbersNow that you’ve gathered the facts, it’s time to for-mulate your bid. If the job is a straightforward instal-lation or sanding and refinishing, you can probablywrite the bid on the spot, according to your usualcharges for that segment of work. If the job is morecomplicated, tell the customer you will work up anestimate and get back to him or her right away.Don’t forget to leave behind your business card, andfollow up when you told the customer you would.
But how? It’s impossible for this publication tomerely say a job of so much square footage shouldbring one amount; a more elaborate job demands ahigher price. It’s impossible because the going pricefor hardwood flooring installations and remodelingwork varies greatly from one city to the next.
Some contractors who have been in the businessfor several years, and have costed hundreds of jobs,
inspect plumbing in the area where the floor is tobe installed.
• Is there a sense of damp, moist or stagnant airwhen entering the home? If so, the situation mustbe corrected. Are the heating and air conditioningoperational? Temperatures of the subfloor, adhe-sives and flooring should be over 60 degreesFahrenheit during installation. Check manufac-turers’ recommendations.
Remember: Always write down all your answers.
Evaluating the exteriorYour check for moisture involves many exterior con-ditions. Here are some more:• What is the lot’s relationship to the street, to the
neighboring site, to a nearby hillside, to a nearbypool?
• How is the landscaping? Is there or will there be asprinkler or irrigation system? Is there no yard, anew yard or an established yard?
• Is the site properly graded to divert water awayfrom the foundation?
• Does the driveway slope away from the house? • Are the roof, windows and doors all in place and
weather-stripped?
Evaluating the interiorYou’re still not ready to take out the first tool — farfrom it, in fact. Once indoors, take a look around: • Are both the heating and air conditioning systems
in place and working? The intent is to install theflooring as close to normal living conditions aspossible.
• What type of heating? Radiant, baseboard, radia-tor, forced air (electric or gas)?
• Is the heating system equipped with a humidifier?• What is the moisture content of the subfloor and
what is the relative humidity of the jobsite? • What is the condition of the subfloor? Is it over
wood joists or slab? If it’s over wood joists, what isthe thickness of the subfloor? Is the subfloorapproved for wood-flooring application?
• Is the subfloor clean? Dry? Flat? Sound?• How old is the concrete slab? In a new building, it
must be at least 30 days old before you can con-sider moisture testing.
• How much further preparation will you need todo? Will you have to remove the old flooring, flat-ten, patch, sand, renail it, or replace or install thesubfloor?
• Is asbestos or lead abatement necessary?The bottom line when evaluating the interior’s
readiness for an installation: Any sense of a damp,cold and “clammy” feeling structure is an indicationof future problems for wood floors.
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develop unit pricing for each function — installation,sanding and finishing. On a normal job, they plug inthe unit price to the square footage and arrive at aselling price.
Other contractors figure the selling price by calcu-lating the number of man hours and cost of materi-als involved, and then multiplying that direct cost byoverhead and profit to develop a selling price. “Over-head” can involve a variety of factors, including pay-ments on your trucks and equipment, as well as rentand utilities. You must be aware of what your trueoverhead costs are. The information can be devel-oped from your records by your accountant. TheNWFA Profit Planning Report provides material tohelp you in this area. [For more information, contactNWFA at the address or phone numbers listed onthe back page of this publication.]
Write your bid so that your customer can under-stand exactly what you are offering, and at whatprice you are offering it. Make sure you have com-municated the bid clearly, so that you and yourcustomer are both “on the same mental page.”Before you even present the bid, review its details —and only then engage in your final selling conversa-tion with the customer. If the materials are a special-order item, write in the lead time from the date of thesigned contract, rather than the date of the bid. Alsospecify whether a deposit is required.
A critical point in estimating jobs: Get the bid outon time! Do it while the details are fresh in yourmind. Once the job is let, it doesn’t matter how longyou have spent working up your bid — you havemissed the opportunity and the job has gone toanother contractor. You have probably also lost achance to bid again with this customer, since he orshe may perceive you as slow, unresponsive andunprofessional.
Bidding for commercial workIn commercial and institutional estimating, the gen-eral contractor or owner will send a set of plans anda specification book. The specifications book will tellyou what product is to be used and how it is to beinstalled and/or finished. Any conflict between speci-fications and manufacturers’ recommendationsshould be clarified in writing.
The plans will show you what rooms the floorgoes into, as well as the room sizes. Plans will alsohave details showing special conditions or how thewood flooring interacts with other surfaces.
A basic knowledge of blueprint reading is essen-tial. If you have questions, call the general contractoror send a written request for information.
Formulate your estimate as clearly and conciselyas possible. Make sure you can understand yourmathematical progression. The potential buyer maywant to add or delete an item at a later time, and it iseasier to get back into the bid if it is clear and logical.Clearly detail any substitutions in materials or
installation that you will make. Try this test: Cansomeone else at your company read your take-offand estimate, and understand what you are doing,as well as how you arrived at the selling price?
Scheduling the jobOnce you know when you will have an individual orcrew available to perform the work, and when thematerials will be available for delivery, call your cus-tomer and negotiate a schedule. The issues are:• When are you ready?• When is the customer ready?• When is the jobsite ready?• When are the other trades affecting your work
completed?Remember, you signed the contract. Now is the
time you must act as a competent wood flooring con-tractor and a good businessperson.
Outline a schedule that allows for proper acclima-tion time (if necessary) before and after installation.Figure, too, that something is going to go wrong orslow you down — a sick worker, a broken tool, yourother jobs and schedule, etc. You need the time to dothe job right, and give him or her quality work.
If your job is completed ahead of schedule, youwill be considered a hero. But if your job is behindschedule, you’ll likely never get a call again from thatcustomer — and you’ll certainly never get any refer-rals from him or her.
If your customer demands that you start or accel-erate work that you know is not ready, explain care-fully the dangers of a rushed job. Share with him orher the Water and Wood (A100) technical publica-tion, which explains the perils that may lie ahead.Also, review the NWFA Waiver Form with your cus-tomer. Make sure he or she understands why thewaiver applies, and have him or her sign it. With anywaiver form you ask a customer to sign, make surethe specific consequences of proceeding are detailedin the waiver.
Present this form and the facts to the customer ashis or her friend, not as the enemy. Let the customerknow that you want to speed up the schedule, too,but it is not physically within your power to speedup jobsite conditions or acclimation period. There-fore, you will do the work — if the customer stillwants you to do it — but only after he or she waivesyour liability for the consequences that are notwithin your control.
You’ll need to know if there are other trades thatare going to affect your ability to work in your area.You cannot expect to lay a floor or sand and finishone if others are walking all over and through theroom, have scaffolding on it or are spraying toxicvapors nearby. Nor can you have dust from othertrades floating around when you are putting on yourfinish.
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Now that the schedule is set, you are ready todo the job. But there are still more checkliststo mind: Preparation of the home or build-
ing’s exterior, preparation of its interior and acclima-tion of your materials.
The work ticketUse the estimate sheet you prepared for the job towrite up a work ticket, even if you are doing the workyourself. Why a work ticket? It helps you focus, pre-pare and work through the job both in your mindand on paper.
First, pull out your estimate and evaluate theinformation you observed.
Keep in mind that time constraints could necessi-tate delivery of material by special freight — and thiswill obviously cost more.
Write down your room sizes so that someone elsecan identify the room. A layout is also useful. Showtotal footage of the job, and the quantity and type ofmaterials ordered. This information will be necessaryto check in your delivery from a supplier.
Write down how you want the job installedand/or finished. List all sundry items necessary —finishes, nails and mouldings. A review of the workticket will help you catch something you may haveforgotten.
Once you have detailed the scope and method ofinstallation and finishing in the work ticket, you canorder all the materials necessary to complete this job.
A few minutes spent now will save labor, moneyand goodwill at the jobsite. There is nothing worsethan having the crew tell the customer they cannotdo the work because they did not bring the rightequipment or material.
Actual jobsite preparationThere are still dozens of little tasks that make a job-site wood-worthy. They include, if applicable:• Removing furniture and applicances, if necessary.• Checking the moisture content of the subfloor —
again — and recording it on the work ticket;• Taking up the old flooring and disposing of it
properly;• Taking up the subfloor;• Grinding and sanding the slab to flat acceptabil-
ity, if necessary;• Repairing the subfloor by re-nailing or shimming
the subfloor or reinforcing the joists;• Flattening the subfloor by sanding or using rec-
ommended patching compounds;• Adding an underlayment to the existing subfloor,
(installing plywood over a slab, for example); • Getting rid of all waste materials produced, so the
new floor can start with a clean appearance;• Removing all baseboards, trim, moulding and
thresholds;• Removing the doors;• Measuring and undercutting to allow for expan-
sion around fireplaces, stair skirts, casings, door
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In most new construction projects, moisture is introduced into the
structure during the construction process. Examples of this are:
Concrete foundations one cubic foot = 3 pints of
water per cubic foot
Concrete slab 4” thick, size 25’ x 40’ (1000 sq. ft.)
= 250 gallons of water or a quart per square foot
Plaster walls = 1 quart of water per square foot of
surface
Wall texture (heavy) = 8 ounces of water per
square foot (16 square foot per gallon)
PREPARING TO DO THE JOB
N A T I O N A L W O O D F L O O R I N G A S S O C I A T I O N T E C H N I C A L P U B L I C A T I O N N o . A 4 0 0
jambs, etc.;• Measuring the room for squareness, to lay out
your work line;• Sweeping or vacuuming to once more present a
clean workplace. It’s now time to make sure that everything in your
estimate has been addressed and repaired. It’s alsonow time to get to work.
Wood at the jobsite Even before wood is delivered to the jobsite, the job-site itself must be checked to see if it is ready for thedelivery of the wood. Wood should stay separate ofthe jobsite if the jobsite conditions are too moisture-ridden. Otherwise, the wood will be affected by themoisture and react adversely.
Once at the jobsite, follow the manufacturer’s rec-ommendations for acclimation. Moisture contents ofboth the flooring and the subfloor must be checkedand recorded before any work begins.
If flooring is delivered on a damp day, the exposedboards and the ends of others in the bundles canabsorb moisture. If installed in this condition, theflooring can shrink a few months later and show gaps.Also, wood flooring should not be delivered to the job-site until the building is fully enclosed, and after plas-tering and painting are completed and dried.
It is more prudent to accept a delay in completionrather than to have the floor installed while the wallsare still damp, thus risking unsatisfactory results.Moisture evaporates from damp walls into the airwithin the house, and some of it may be absorbed bythe flooring.
AcclimationAnother condition that causes flooring to pick upmoisture during construction is less obvious, butmore common: Between the time the floor is installedand the house occupied, the general temperatureswithin the house both day and night are likely to belower, and the humidity higher, than they would be ifthe house were occupied. By having the heating andair conditioning operating, the flooring can acclima-tize to its anticipated environment. It’s recommendedthat the heating system is operating for at least 48hours even before the delivery of the flooring to stabi-lize the moisture conditions of the interior, andremain operating for the lifetime of the floor.
Only after wood has acclimatized to the jobsite isthe installer ready to install — and only after gettingsatisfactory measurements from the concrete slab,the subfloor and the wood itself. When installation ofunfinished wood flooring is completed, good practicecalls for a delay of one to three weeks for furtheracclimation before beginning the sanding and finish-ing part of the job.
Now you’re ready to startNow you’re ready to start installation. Follow themanufacturer’s specifications and NOFMA andNWFA guidelines, ensuring the best job possible. Ifyou stick to your game plan, do good work and finishon time and on budget, then you will have a satisfiedcustomer. That customer will pay you, and then referyou to friends and associates.
Moreover, you and your workers will enjoy the senseof accomplishment associated with a job well-done. Andthat is one of the biggest rewards of our business.
© 1997 NATIONAL WOOD FLOORING ASSOCIATION 11
WOOD FLOORING HAS A COMFORT LEVEL, TOOWood flooring will perform best when the interior environment is controlled to stay within a relative humidity range of30 to 50 percent and a temperature range 60 to 80 degrees Fahrenheit. Fortunately, that’s about the same comfortrange most humans enjoy. The chart below indicates the moisture content wood will likely have at any given combi-nation of temperature and humidity. Note that equilibrium moisture contents in the recommendedtemperature/humidity range (shaded area) coincide with the 6 to 9 percent range within which most hardwood floor-ing is manufactured. Although some movement can be expected even between 6 and 9 percent, wood can expandand shrink dramatically outside that range.
MOISTURE CONTENT OF WOOD AT VARIOUS TEMPERATURES AND RELATIVE HUMIDITY READINGS
Temperature (°Fahrenheit)
30 1.4 2.6 3.7 4.6 5.5 6.3 7.1 7.9 8.7 9.5 10.4 11.3 12.4 13.5 14.9 16.5 18.5 21.0 24.3 26.940 1.4 2.6 3.7 4.6 5.5 6.3 7.1 7.9 8.7 9.5 10.4 11.3 12.4 13.5 14.9 16.5 18.5 21.0 24.3 26.950 1.4 2.6 3.7 4.6 5.5 6.3 7.1 7.9 8.7 9.5 10.4 11.3 12.4 13.5 14.9 16.5 18.5 21.0 24.3 26.960 1.3 2.5 3.6 4.6 5.4 6.2 7.0 7.8 8.6 9.4 10.2 11.1 12.1 13.3 14.6 16.2 18.2 20.7 24.1 26.870 1.3 2.5 3.5 4.5 5.4 6.2 6.9 7.7 8.5 9.2 10.1 11.0 12.0 13.1 14.4 16.0 17.9 20.5 23.9 26.680 1.3 2.4 3.5 4.4 5.3 6.1 6.8 7.6 8.3 9.1 9.9 10.8 11.7 12.9 14.2 15.7 17.7 20.2 23.6 26.390 1.2 2.3 3.4 4.3 5.1 5.9 6.7 7.4 8.1 8.9 9.7 10.5 11.5 12.6 13.9 15.4 17.3 19.8 23.3 26.0100 1.2 2.3 3.3 4.2 5.0 5.8 6.5 7.2 7.9 8.7 9.5 10.3 11.2 12.3 13.6 15.1 17.0 19.5 22.9 25.6
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 98Relative Humidity (percent)
Chart taken from Wood Handbook: Wood as an Engineering Material, (Agriculture Handbook 72), Forest Products Laboratory, U.S. Department of Agriculture.
N A T I O N A L W O O D F L O O R I N G A S S O C I A T I O N T E C H N I C A L P U B L I C A T I O N N o . A 4 0 0
12 © 1997 NATIONAL WOOD FLOORING ASSOCIATION
JOBSITE CHECKLISTI. GENERAL INFORMATION
Owner’s Name___________________________________________________________________Date__________________
Address________________________________________________________________________________________________
Home phone ___________________________________________________________________________________________
Husband’s work phone _______________________________Wife’s work phone _______________________________
Cellular/car phone___________________________________Pager ____________________________________________
Jobsite address________________________________________________________________________________________
Jobsite visit appointment date ___________________________________________________Time__________________
II. TYPE OF JOB
Residential ____________ Commercial __________
New ___________________ Remodel _____________
III. RESIDENTIAL USE INFORMATION
Traffic High _____ Average _____ Low ____
Any special or unique use _______________________
Project rooms/areas _____________________________
Project budget___________________________________
IV. COMMERCIAL USE INFORMATION
Retail store ____ Restaurant_____ Office _____
Bar ____ Other ______
Traffic High ____ Average _____ Low _____
High-rise Yes _______ No _______
Freight elevator Yes _______ No _______
Passenger elevator Yes _______ No _______
Hours of access _________________________________
Power access____________________________________
Maintenance ____________________________________
Maintenance company___________________________Phone___________________________________________
Proximity of parking_____________________________
Cost of parking__________________________________
V. INTERIOR
Relative humidity in air-space:Hygrometer ___% Sling psychrometer______%
HVAC units operable Yes _______ No _______
If no, date to be operating________________________
Type of heat:Radiant _______ Baseboard_____ Radiator__
Forced air _____ Electric________ Gas ______
Wood-burning stove Heat ducts ________
Overhead _____ Under floor________
Insulated Yes _______ No _______
Humidity controls Yes _______ No _______
Thermostat settingFirst unit _________F Second unit______F
Air conditioning Yes _______ No _______
Large window/sliding glass doors facing:East ________ South________ West________
Drapes Yes _______ No _______
Tinted glass Yes _______ No _______
Double-glazed/storm windows Yes _______ No _______
KITCHEN:
Instant hot water Yes _______ No _______
Refrigerator Yes _______ No _______
Icemaker Yes _______ No _______
Food freezer Yes _______ No _______
Dishwasher Yes _______ No _______
Other _________________________________________
MUD ROOM/LAUNDRY ROOM:
Clothes dryervented outside Yes _______ No _______
Plumbing leaks _______________________________
Ceiling stains _________________________________
BATHROOM:
Bathroom exhaust Yes _______ No _______
Heated exhaust Yes _______ No _______
BASEMENT
Walls cracked Yes _______ No _______
Paint peeling Yes _______ No _______
Floor stained Yes _______ No _______
Damp Yes _______ No _______
Vented Yes _______ No _______
Rusty nails Yes _______ No _______
© 1997 NATIONAL WOOD FLOORING ASSOCIATION 13
N A T I O N A L W O O D F L O O R I N G A S S O C I A T I O N T E C H N I C A L P U B L I C A T I O N N o . A 4 0 0
Sump pump Yes _______ No _______
Condensation oncold-water lines Yes _______ No _______
Musty smell Yes _______ No _______
Heated Yes _______ No _______
Air-conditioned Yes _______ No _______
Relative humidity in air-space:
Hygrometer ___% Sling psychrometer_____%
VI. EXTERIOR
Building is overBasement ___ Crawl space_____ Slab____
Relation of lot to streetAbove ____ Level _____ Below ______
Lot cut and fill Yes _______ No _______
Relation of lot to neighborAbove ____ Level _____ Below ______
Lot drainage away from foundationYes _______ No _______
Shaded lot Yes _______ No _______
Gutters/downspouts Yes _______ No _______
Directed away Yes _______ No _______
Roof overhang Yes _______ No _______
Foundation perimeter:
Waterproof Yes _______ No _______
Soil damp Yes _______ No _______
Window wells-dry Yes _______ No _______
Planterbox Yes _______ No _______
Shrubs/flowers Yes _______ No _______
Comments _____________________________________
Yard established Yes _______ No _______
Recent Yes _______ No _______
Sprinklers/irrigation Yes _______ No _______
Excess watering Yes _______ No _______
Entry is:Step up ______ Level _______ Down______
Swimming pool Yes _______ No _______In-ground _____ Above-ground ______
Distance from pool to foundation___________feet
Drains in pool deckand/or patio Yes _______ No _______
Is street curbdrain active Yes _______ No _______
CRAWL SPACE:
Distance from soil to subfloor __________________
Condensation Yes _______ No _______
Musty smell Yes _______ No _______
Concrete slab Yes _______ No _______
Moisture barrierbeneath concrete Yes _______ No _______
Dirt floor Yes _______ No _______
6- or 8-mil black polycover over dirt Yes _______ No _______
15sf open vent per1,000sf floor area Yes _______ No _______
Vents open Yes _______ No _______
Cross-ventilation Yes _______ No _______
VII. SUBFLOOR INFORMATION
(Reference NWFA Installation Guidelines, Section 2,Chapters 2-7 for approved subfloor.)
Existing wood type:3⁄4-inch CDX plywood ________5⁄8-inch CDX plywood ________23⁄32-inch OSB underlayment grade ________Solid board___________________________________Other ________________________________________
Renail Yes _______ No _______
Sand Yes _______ No _______
Damage Yes _______ No _______
Pet stains Yes _______ No _______
Rot Yes _______ No _______
Other subfloor repair ________
Average moisture content in flooring ________%
Average moisture content in subfloor________%
Average moisture content in sleepers________%
Average moisture content in joists___________%
In areas or seasons of extreme moistureconditions, check moisture content in:
Adjacent baseboard _______%Door trim _________________%Wood threshold ___________%
Paint/finish linesexposed Yes _______ No _______
Trim pieces dislodged Yes _______ No _______
SLAB:
Relate elevation of slab surface to exterior soilline +/- ____________inches
Slab tested for moisture before installYes _______ No _______
What test __________________________________
Results ____________________________________
New slab __________ Date poured________
Existing slab ________ Age___________
Float/grind slab Yes _______ No _______
Install wood subfloor Yes _______ No _______
Moisture membrane Yes _______ No _______
14 © 1997 NATIONAL WOOD FLOORING ASSOCIATION
N A T I O N A L W O O D F L O O R I N G A S S O C I A T I O N T E C H N I C A L P U B L I C A T I O N N o . A 4 0 0
REMODEL:
Move furniture Yes _______ No_______
Special needsPiano ____ Antiques _____ Appliances ____Toilet_____ Other ________(Note: Gas and water lines must be discon-nected by customer or qualified personnel.)
Company responsible __________________________Phone ________________________________________
Existing floor coveringCarpet______ Sheet vinyl ______Vinyl tile____ Ceramic tile _____Wood _______Other _______________
Do existing wall moldingsneed to be removed Yes _______ No_______
Does the existing floor covering needto be removed Yes _______ No_______
Note: If it appears that floor covering could containasbestos, check with the dealer/contractor com-pany for proper abatement procedures.
Who is responsible for removal of existing floorcovering? __________________________
Who is responsible for trash disposal? _________
Use graph paper like that below to sketchthe dimensions of the installation to scale.
VIII. FLOORING TYPES
Unfinished_______ Prefinished__________
Species_____________________________
Size of flooring desired _____________
Solid_____ Engineered ____ Floating floor ____Strip_____ Plank__________ Parquet__________
INSTALLATION:Glued ______ Stapled ____ Nailed __________Stain color ____________________________________Sealer_________________________________________Finish_________________________________________
Number of coats ____________________
Trim and moldings _________________
Special layout Yes _______ No _______If yes, type______________
IX. SPECIAL REQUIREMENTS
NEW CONSTRUCTION:
Power 110_______ 220 ______
Distance to pole ____________________
Booster Yes _______ No _______
Time schedule for installation __________________
Other trades____________________________________
Wet work completion ___________________________
© 1997 NATIONAL WOOD FLOORING ASSOCIATION 15
N A T I O N A L W O O D F L O O R I N G A S S O C I A T I O N T E C H N I C A L P U B L I C A T I O N N o . A 4 0 0
NWFA TECHNICAL AND EDUCATION COMMITTEE
• John Hoopes, 3M Company, committee chair
• Coley Armstrong, Basic Coatings
• Joe Audino, Rode Brothers Floors
• Don Bollinger, Wood Floor Products
• Daniel Boone, National Wood Flooring Association
• Jeff Buysse, Minuteman International
• Chris Coates, Golden State Flooring
• Don Conner, Harris-Tarkett Inc.
• Tom Conser, The Roane Company
• Bill Costello, Dura Seal
• Tom Derleth, Indiana Hardwood Specialists
• Galen Fitzel, 3M Company
• Jim Garth, Dynamic Laser Applications
• John Goss, Woodwise/Design Hardwood Products
• Kevin Hacke, Maple Flooring Manufacturers’ Association
• Woody Hilscher, BonaKemi USA
• Tim McCool, Dri-Tac Adhesives Group
• Mickey Moore, National Oak Flooring Manufacturers’ Association
• Neil Moss, Robbins Hardwood Flooring
• Brian Roberts, Franklin International
• Bob Vanderlinden, Bruce Hardwood Floors
Acclimation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Bevels (plank flooring) . . . . . . . . . . . . . . . . . . . . . . . 5
Borders and medallions. . . . . . . . . . . . . . . . . . . . . . . 5
Checking for moisture . . . . . . . . . . . . . . . . . . . . . . . . . 7
Commercial work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Concrete slabgrinding and sanding. . . . . . . . . . . . . . . . . . . . . . . . . . 10moisture content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Crawl spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Crunching numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Customer expectations . . . . . . . . . . . . . . . . . . . . . . . . 5
Cut. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Engineered/laminated flooring. . . . . . . . . . . . . . 6
Environmental controls. . . . . . . . . . . . . . . . . . . . . . . . 5
Estimating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Evaluating the exterior . . . . . . . . . . . . . . . . . . . . . . . 8
Evaluating the interior . . . . . . . . . . . . . . . . . . . . . . . . 8
Evaluating the job . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Furniture and appliances, removing . . . . . . 10
GradesMaple Flooring Manufacturers Association. . . . . . 6National Oak Flooring Mfrs. Association . . . . . . . . 6
Gutters and downspouts . . . . . . . . . . . . . . . . . . . . . . 7
Heating and air conditioning . . . . . . . . . . . . . . . . 8
Humidifier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Jobsite preparation . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Landscaping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mantenance procedures . . . . . . . . . . . . . . . . . . . . . . 5
Moisture content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Normal living conditions. . . . . . . . . . . . . . . . . . . . . . 8
NWFA Jobsite Checklist . . . . . . . . . . . . . . . . . . 4, 12
NWFA Profit Planning Report . . . . . . . . . . . . . . . . 9
Overhead. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Parquet flooring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pattern. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Plainsawn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Plank flooring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Prefinished flooring . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Quartersawn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Riftsawn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Scheduling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6- to 8-mil polyfilm moisture barrier . . . . . . 7
Solid flooring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Species. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Square-edge plank . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Strip flooring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Subfloormoisture content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8removing or repairing. . . . . . . . . . . . . . . . . . . . . . . . . . 10
Unfinished flooring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Water and Wood (Publication A100). . . . . . . 7
Wood Species Used in Wood Flooring (Publication A200) . . . . . . . . . . . . . . . . . . . . . . . . . 6
Work ticket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
INDEX
SOURCES AND CREDITS
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