construction handbook, ch. 3 - 2017.02 · 1 photos courtesy of habitat for humanity how to build a...
TRANSCRIPT
72
SIDING
Skills needed?
Safety tips?
Notes:
The final exterior layer
Table of Contents
Outdoor Fixtures
(Outlet Boxes, Hose Bibs, Back Porch Light) ...... 73
Vinyl Siding ..................................................... 75
Siding Layout ............................................... 76
Basic Principles ............................................ 77
Siding Trim .............................. 78-79, 81-82, 85
Top Row-Eave Walls ..................................... 83
Gable Walls .................................................. 84
Soffit ................................................................ 86
Soldier Course .............................................. 89
Fascia Metal..................................................... 90
Bird Box Metal ............................................. 93
Porch Columns ................................................ 95
Air Sealing ....................................................... 97
Baffles .......................................................... 99
Insulation ....................................................... 100
73
OUTDOOR FIXTURES
When planning
where to install,
keep in mind that
shutters still need
to be fit beside
front windows!
Installing water/electrical fixtures in the wall before siding is put up
Tools Needed
Hardware Needed
74
1. The hole for the outlet box should start right next to a
stud, and the top should be 18” from the inside floor.
2. Use the included template to draw the outline for the
hole to be cut out.
3. Use a sawzall to cut out the hole. Trim edges as
necessary to fit the outlet box.
4. Once the outlet box fits, place a level on top. Trim as
necessary to make level.
5. Fit the outlet box in place, and nail with roofing nails.
6. Tape with Dow WEATHERMATETM housewrap tape.
First tape the bottom, then the sides, and then the top.
Image 1. Marking the Location
Outdoor Fixtures
Lighten up the porch. Power a tool. Water a plant.
Image 4. Taped
Image 1
Note: Make sure the top of the side pieces of tape do not extend
above the top piece.
Image 2. Cutting the Hole
Image 3. Level the Box
*Hose bibs and the back light are installed
in the same manner.
75
VINYL SIDING
Keep the
siding off the
ground so
that it stays
clean!
The exterior skin—for weather protection...and making it look nice!
Tools Needed
Hardware Needed
(x2) Image Credit and Copyright ©
2014 by Vinyl Siding Institute,
Inc.
77
Vinyl siding is not water-resistant. Plan ahead so that seams between pieces are not
above a window, a door, or a penetration for a pipe/duct.
Siding expands and contracts with temperature change - leave 1/4” gap when
cutting to fit inside channels (sides of windows, the end of a wall…)
Because siding needs to be able to move, don’t drive the nail all the way in (but
nail all the channels tight!) ( ).
Nail every 6th hole (applies to all siding and trim) - place in the center of nail slots.
When nailing siding, lock the piece into the row below, pull it up tight so it is not
sagging, and tack nails in with your hand before using your hammer.
Siding: Basic Principles
Note: If the pieces are not interlocked into the previous row and pulled up
tight, ALL of the siding installed after will have to be taken down to fix it.
Exception: In the uppermost slots of corner posts, place the nail at the top of these slots.
Image 1
Image 1. How to Nail into Siding1
Image 2. Nail Location for Siding1
Image 3. Nail Straight On1
1 Image Credit and Copyright © 2014 by Vinyl Siding Institute, Inc.
78
Siding Trim: Corners These images specifically show outside corner trim.
Image 2. A finished corner piece
Note: Use the template, if it’s on-site!
Image 1. The Process
Image 3. The Template
79
Image 1. Starter Strip Placement
Siding Trim: Starter Strip
The starter strip is installed at the most continuous height of the house.
Pull housewrap up and tack out of the way (it will lay over the top of the starter
strip after installation).
Measure 1.5” up from the top of the brick. Snap a chalk line, and align the top of
the starter strip with it.
Start and stop 4” short of corners and 1” short of doors.
80
When fitting siding over a penetration (an outlet box, dryer vent, etc.):
1. Hold the siding piece directly below where it will be installed, and mark the width of
the hole to be cut ( ).
2. Lock the siding piece in right beside the penetration, and mark the height of the hole
( ).
3. Use a straight edge to extend the marks so that they intersect (making an outline of
the cutout) (see outline in ).
4. Make the cut using a utility knife ( ).
5. Lock the siding in, and nail ( ).
Image 1. Step 11
Siding: Making a Cut-Out
Align properly, and no measurements are required.
Image 4. Step 51
Image 2. Step 21
Image 3. Step 41
Image 2
Image 1
Image 3
Image 4
Image 3
1 Photos courtesy of Habitat for Humanity How to Build a House by Larry Haun, published by The Taunton Press.
81
1. When fitting siding under the window sill:
- Measure from inside to inside of window trim.
- Cut and install the utility strip at this width ( ).
2. Hold the siding piece directly below where it will be installed, and mark where the
ends of the utility strip align (mark at arrows in ).
3. Measure from the bottom of the nail flange of the
previous row to the top of the utility strip,
and subtract ⅛ ” ( ).
4. Mark that height on the siding, and extend the marks
from Steps 2 & 3 until they intersect to form
an outline of the cutout (use a speed square for this).
5. Use siding shears to cut along the outline ( ).
6. Use a crimper to make dimples every 6” along the newly formed top edge that will fit
in the utility strip ( ).
7. Lock siding into
place, making sure
the dimples catch
in the utility strip.
Nail it in.
Image 1. Utility Strip Size
Siding Trim: Window Sill
Note: Avoid seams in pieces under windows.
Image 1
Image 3. Using the Shears Image 4. Using the Crimper
Image 2
Image 3
Image 4
Image 1
Image 2. Measuring the Height
82
When using the shears to make cuts:
1. Cut the face.
2. Cut the nail flange.
3. Bend, and cut the rest.
Siding Trim: Angle Cuts
*For the peak, make the 6:12 angle cut and a cut
straight down (90°). Then, fit the angle cut over the
straight cut.
How to cut a 6:12 pitch angle
(same angle as the roof)
Looks like this
Used at the corner of
gable walls
83
Eave walls (roof is even all the way across):
1. Nail F channel flush with the bottom of the
trusses. Extend the entire length of the wall (it
will fit above the corner posts ( ).
2. Nail J channel and utility trim simultaneously,
fitting right below the F channel and aligning the
nail slots with each other ( ).
Image 3. How to Measure Height for Top Row
Siding Trim: Top Row-Eave
Image 1. An Eave Wall
Siding: Top Row-Eave
3. Measure height ( ) every 2’ across the wall, and cut accordingly ( ).
4. Use a crimper to make dimples every 6” along the
top of this siding piece, and lock into place ( ).
Image 5. Using Crimper to Punch Holes
Image 2. Siding Trim-Eave Walls
Image 2
Image 2
Image 4. Height Measurements for Top Row-Eaves
Image 5
Image 3 Image 4
84
1. Hold one end of a measuring tape against the
underside of the roof sheathing. Measure down
(perpendicular to the roof angle, not straight down)
5 ½” plus the height of the F channel onsite. Mark
with a pencil, and snap a chalk line on these marks.
2. Nail F channel so the top aligns with the chalk. Cut
at the peak so that the bottoms of F channel on each
side are flush to one another.
3. Nail J channel, fitting right below the F channel.
For how to cut angles and overlap pieces, see p. 82.
Image 3. Measuring Gable Pieces
Siding Trim: Gable Walls
Image 1. A Gable Wall
Siding: Gable Walls
4. For the first row that begins to angle in towards the
peak, measure the height for your siding piece according
to . Cut angle using the siding jig.
5. Measure and cut the rest of the siding according to
. For the top pieces, see .
6. For the final piece, fasten with a white finish nail.
Image 4. Measuring Gable Top Pieces
Image 2. Height of Transition Piece
Image 2
Image 3 Image 4
85
The door frame is adorned with J channel on the top and sides.
1. Cut the top piece to be 2” more than the width of the door frame.
2. Cut the side pieces to be 1” taller than the door frame.
3. Make 45° cuts on both sides of the top piece of J channel. Then, cut slits to bend
down a flap on each side. (These flaps will slide over the side pieces.) ( )
4. Cut a hole at the top of each side piece equal to the size of the flap ( ).
5. Install side pieces first. Then, install top piece over the side pieces.
Image 3. Top Piece Ready to Install
Siding Trim: Door Frame
Image 1. An Eave Wall
Image 2. Installed Door Trim
Image 1. Door Corner Detail
Image 1
Image 1
86
SOFFIT
When taking soffit out of the box, there will be
two layers joined together. Keep them this way
as you cut:
Covers the underside of the rafters/overhang
Tools Needed
Hardware Needed
Soffit Layers Joined Together
And keep the
soffit off the
ground so that
it stays clean!
87
Take an 8-ft. ladder. At each truss, measure from the
inside of the F channel to the outside edge of the fascia.
Write the measurement minus ¼” on the front side of
the sub-fascia so it can be seen from below ( ).
Leave the pieces together when removing from the box,
and cut two at a time.
For the first piece, face the nail flange towards the
opposite end.
Interlock pieces together, slide them into the channel,
and fasten each piece with one nail into the sub-fascia
( ).
*On gable walls, start at one end, and work your way up towards the peak. At the
peak, bend the soffit to match the angle at the peak (use the metal brake for this; if
the brake is not available, use a carpenter’s square and hand clamps). Continue
down the other side, and cut your last piece to fit inside the J channel ( ).
Soffit: Eaves & Gables
Use vented soffit at eaves. Use solid soffit at gables.
Note: For the piece that covers an outside corner (where the
bird boxes are), use two finish nails to fasten the edge where
there is no nail flange, and nail in the other side as usual.
Image 1
Image 3. Gable Soffit: Order of Operations
Image 1. Measuring for soffit
Note: Don’t forget to install 2x6 blocking (flush with the
bottom of trusses) in between trusses for the two flood lights.
Image 2 Image 2. Installing soffit pieces
Image 3
88
Soffit: Underside of Porch
Each row of porch soffit will be
perpendicular to the porch trusses.
1. Measure from inside of F
channel to inside of F channel,
and subtract ¼“.
2. Cut, and nail into each truss.
3. Interlock successive pieces.
Soffit: Interior Corners
Rather than trying to get
the 45° angle just right
at an interior corner,
install back-to-back J
channel to hold the
soffit in both directions.
Note: Don’t forget to install 2x6
blocking (flush with the bottom of
trusses) in between trusses in the middle
of the porch for the light fixture.
Image 2. Cutting & Nailing
Image 3. Finished Underside of Porch
Image 1. Soffit at an Interior Corner
89
The soldier course is installed on the inside face of the
porch beams.
1. Measure to the insides of the top and bottom channels.
2. Cut, and interlock into previous piece.
Note 2: On the front beam, start
your soldier course on the same
side that you started the soffit on
so that the grooves align.
Note 1: Install J channel on the
front beam first—before the sides.
Soffit: Soldier Course
Soffit: Soldier Course Trim
Image 2. Measuring Image 3. Cutting Image 4. Fitting
1. Install the bottom piece first.
2. Cut the side piece at the height of the porch
beam, and make 45° cuts. This will fit over
the bottom piece.
3. Install the top piece with a 45° cut over the
side piece.
Image 1. Soldier Course Trim: Install Order
90
FASCIA METAL
Wear gloves!
This metal is
very sharp.
Covers the sub-fascia all around the house
Tools Needed
Notes
91
1. Cut a piece 10’ long - use a square to mark a
straight line to cut with the shears.
2. You will cut this piece into three 8” strips (the roll
is 24” wide) ( ):
A. Measure and mark at both ends of the 10’ piece.
B. Place in metal brake, aligning with first mark.
C. Clamp, and score with a utility knife (put some muscle in this) ( ).
D. Once a good score has been made, use the
brake to bend it so that it breaks.
E. Repeat steps 2B-D with second mark.
3. For each 8” piece, measure and mark ½” and
2” from an end ( ).
4. Use the brake to bend at the ½” mark as much
as you can.
5. Place this almost flattened piece under the clamping bar,
and secure the clamp to completely flatten it ( ).
6. At the 2” mark, use the brake to bend it to 90°.
7. Repeat steps 3-6 on the two other 8” pieces.
Fascia Metal: Bending
Image 1. Cutting 8” Pieces
Image 2. Scoring the Metal
Image 3. The Bend Marks Image 4. Flattening at ½” Image 5. Finished Piece
Image 1
Image 3
Image 4
Image 2
92
Where to start:
• Eave walls - work from back to front of house (or start away from driveway and
work towards the driveway, depending on orientation of house).
• Gable walls - work from low to high (higher pieces will overlap lower ones).
The Process:
1. Slide the long side of the metal underneath the drip
edge (a pry bar may help).
2. Nail white finish nails every 24” into the sub-fascia.
3. Overlap pieces at least 6”, and set at least two nails in
the overlap joints.
4. At interior corners ( ), cut a slit in the metal
where it will meet at the corner so that you can bend the
piece at 90° to fit it around the corner.
*For exterior corners, see the next two pages (p. 93-94).
Fascia Metal: Installing
Image 2. A Gable Wall
Image 1. An Eave Wall
Image 4. Using a Pry Bar1
Image 3
Image 3. An Interior Corner
1 Photo courtesy of Habitat for Humanity How to Build a House by Larry Haun, published by The Taunton Press.
93
1. Cut a piece 41” long - use a square to mark a
straight line to cut with the shears.
2. You will cut this piece into two 12” strips (the roll
is 24” wide) ( ):
A. Measure and mark 12” down at both ends of
the 41” piece.
B. Place in metal brake, aligning with these marks.
C. Clamp, and score with a utility knife (put some muscle in this) ( ).
D. Once a good score has been made, use the brake
to bend it so that it breaks.
3. For each 12” piece, measure and mark ½” and 2”
from an end ( ).
4. Use the brake to bend at the ½” mark as much as
you can.
5. Place this almost flattened piece under the clamping bar, and secure the clamp to
completely flatten it ( ).
6. At the 2” mark, use the brake to bend it to 90°.
7. Repeat steps 3-6 on the other 12” piece.
Bird Box Metal: Bending
Image 1. Cutting 8” Pieces
Image 2. Scoring the Metal
Image 3. The Bend Marks Image 4. Flattening at ½” Image 5. Finished Piece
Image 1
Image 3
Image 4
Image 2
94
1. Measure X and Y.
2. Measure Z (height of 2x10 + thickness of soffit).
3. If Z is less than 10”, mark where you need to cut on
both sides of the metal.
• Use the brake to hold the piece in place as
you cut.
4. Measure out Y” from one end, and notch out
a piece to facilitate bending.
5. Measure X” from that notch, and notch
another piece for a second bend.
6. Measure 6” up from the corner, and cut
horizontally to the bend.
7. Find (Z-6). Measure twice that distance
out. Cut at a 6:12 pitch.
8. Slide under the drip
edge, and nail every 24”
and at each corner
(these will be overlapped
by fascia metal).
Bird Box Metal: Installing
Note: The 10” height above reflects
the 2” already bent in previous steps.
Steps 1 & 2
Step 3
Steps 4 & 5
Step 6
A finished piece Step 7
6:12 Roof Pitch
Explained
For every 12”
out, it rises 6”.
*If Z = 9 ½”,
then (Z-6)
would be 3 ½”.
So, you would
measure twice
that distance
out—7”.
96
1. Cut two pieces of metal, each 12” long and width equal to
the width of the respective porch beam + 2” ( ).
2. Bend 1” lips on each end of the width (a 6” piece would
become 4” wide with 1” lips).
3. Fit one piece under its respective porch beam, and slide it
underneath the white MiraTec board. Before nailing, cut a
slit so that it lays flat across both porch beams ( ).
4. Nail from the inside of the porch using white finish nails.
5. Repeat Steps 3-4 for the piece under the other porch beam.
6. Use a bottle jack and two 2x4’s
screwed together to raise the side porch
beam until it’s level ( ).
7. Once level, measure from the brick
column to the side porch beam.
8. Cut your column pieces at this height.
9. Assemble the pieces together, using a
rubber mallet to get them square and tight.
10.Place the decorative pieces on the column.
11.Set the column so that the edges meet flush with the outside
edges of the 2x10’s of the porch beams ( ).
12.Check level before removing the jack.
13.Slowly remove the jack.
Image 4. Column in Place
Porch Columns
Transfer the weight of the porch roof to the brick Image 1. 1st Piece of Metal
Image 1
Image 2
Image 3
Image 1
Image 2. 2nd Piece of Metal
Image 3. A Bottle Jack
Image 4
97
AIR SEALING
To guard against energy waste and rot
Tools Needed
Applying Caulk
• To achieve a clean bead of caulk at a seam, apply
slow and steady pressure to the caulk gun.
Try to finish a seam in one run.
• To wipe off excess product, do NOT use your finger.
Instead, use the thin edge of a damp sponge to run
along the seam.
• Wash the caulk off of the sponge in a bowl of water.
98
After moisture management, stopping
air leaks is the next highest priority of a
building enclosure. How well a house is
sealed will affect both the energy effi-
ciency and indoor air quality of a house.
◊ 1. Sill foam along topmost plate
◊ 2. Caulk between top plates
◊ 3. Caulk OSB to top plate
◊ 4. Caulk studs at OSB seams
◊ 5. Spray foam around doors and windows
◊ 6. Caulk/spray foam any exterior wall penetrations or other gaps
◊ 7. Spray foam bottom plate to floor
◊ 8. Caulk OSB to bottom plate (or baseboard blocking where it is installed)
◊ 9. Caulk lumber around doors (jacks, kings, cripples, and headers)
◊ 10. Caulk lumber around windows (jacks,
kings, cripples, headers, and sills)
Air Sealing Checklist
Image 1. Air Sealing: Top of Wall
Image 2. Air Sealing Diagram
Blue Lines = Caulk Locations
Yellow Lines = Spray Foam Locations
Oft-Missed Air Sealing Locations
• OSB to baseboard blocking
• Plumbing pipes
Note: Mark all the stud locations on the ground with
spray paint before you end the day.
Note: Make sure to use the gun cleaner immediately
after you finish using the spray foam gun.
99
1. Trim the top of the baffle to allow at least a 1” gap
between it and the underside of the roof sheathing.
2. Fold at the perforations.
3. Set upright—90°—at the outside edge of the wall,
and make any necessary cuts to fit around obstacles.
4. Staple to the lumber on the bottom and sides to hold
it in place.
Image 1. A cardboard baffle installed
Baffles
To allow complete coverage of attic insulation Concept Lesson
The baffle acts as
formwork to allow
13” of attic
insulation to extend
all the way to the
edge of the wall.
Place it at the out-
side edge at 90°—
NOT at the angle of
the roof pitch.
100
INSULATION
The thermal barrier of the home
Tools Needed
*Make sure rigid board
insulation is installed
behind the tub on the
exterior wall before the
tub is put in!
*Only for
person
going up
into attic
101
While air sealing works to create a tight building envelope, insulation works to lessen heat
exchange, whether the heat is escaping the house or entering the house.
1. Separate into two teams—a cut team (2 people) and an install team (2-6 people).
2. The cut team will cut 94” long pieces to fit into the stud cavities.
3. The install team will fit these pieces into the stud cavities. If there is a paper backing,
staple it to the studs.
4. In cavities that have protrusions (outlet boxes, plumbing pipes), hold the insulation
against the cavity, and roughly score it around the protrusion.
Wall Insulation
Image 1. Protrusion in the Cavity1
3-bedroom: __ bundles needed
4-bedroom: __ bundles needed
Note: Rather than measuring each piece, pick a fixed point to measure from (the bottom plate of a
wall), and measure 94” out from that point. Mark this distance on the ground next to your scrap OSB
so that you can simply line up the roll from the fixed point and cut at the measured point each time.
Note: Ensure spray foam has been applied behind outlet boxes (and pipes?) before installing the insu-
lation into the cavity.
Image 2. Scoring the Insulation1
1 Photos courtesy of Habitat for Humanity How to Build a House by Larry Haun, published by The Taunton Press.
102
1. Straighten out both of the hoses by walking them out.
2. Connect the two hoses by connecting the blue coupling and tightening the collars.
3. Screw the antenna into the blower machine, and plug in the receiver to the machine.
4. Connect one end of the hose to the machine, and send the other end into the attic.
5. Outfit the person going into the attic with a dust mask, safety glasses, and coverall suit.
6. Staple measurement cards to trusses (one in each corner of the attic and two or three
more scattered throughout) so that the bottom is flush with the drywall.
7. Cut the insulation blocks in half (on the dotted line), and have a stack ready to go.
Attic Insulation
Image 2. Machine Connections
Note: Keep the loading area tidy and clean - do NOT let anything
besides insulation get into the hopper. If this happens, press both
red buttons on the bottom to stop the machine.
Image 5. Cut Halves
Image 1. Connecting the Hoses Image 4. Cutting Insulation Halves
Image 3. Measurement Card
103
8. Two people will load the hopper:
- One will be responsible for cutting the plastic off and making sure all the plastic
comes off and gets thrown away.
- The other will need to quickly fit the insulation into the hopper before it expands (as
soon as the plastic is cut, it will begin to expand). Break up the insulation as you fit it
in, and make sure it does not get caught on the metal bracket inside the hopper.
*Once the hopper gets below the halfway point, start getting another bag ready to fit in.
9. The person in the attic is to blow up to the 13” mark (R-38) all the way to the baffles,
behind all the ductwork...every inch of the ceiling should get covered in insulation.
10.Once there is enough insulation, turn off the agitator, and use the blower only (just air)
to smooth out and level the insulation as much as you can.
Attic Insulation, Cont.
Image 2. Breaking It Up
Warning: Do NOT put your hand more than halfway down the hopper while the machine is on -
there are metal blades rotating at the bottom to break up the insulation.
Note: The insulation will blow up to about 20 feet, so you should not have to move much. Pick a few
strategic spots, and do your work from those points.
Image 4. Sufficient Insulation
Image 1. Loading the Hopper
Image 3. Letting the Blower Work
Staff/QAT Note:
3-bedroom:
20 bundles needed
4-bedroom:
24 bundles needed