ECO-FRIENDLY BUILDING MATERIALSToday many people that are building or remodeling their houses choose to use eco-friendlybuilding materials. An eco-friendly building material is one that increases the efficiency of energy used and reduces impact on human well-being and the environment. There are many different materials that can be used that are eco-friendly; from foundation, to insulation, to interior and exterior wall finishes, flooring, and countertop materials.Categorization of MaterialsCategorized based on Activity and Vendor Specific1. Civil materials2. Water-proofing and Chemical additives3. Paving, flooring, dado and similar finishes4. Paints, colors, white washing, distempering and wood finishes5. Wood work6. Roofing and ceiling7. Doors and windows8. Water supply and sanitary fittings9. Electrical works10. Fire fighting system11. Miscellaneous12. Excavation work13. Road worksEvaluating Eco-friendly Materials

Why eco-friendly materials? Phenomenal growth in the construction industry that depends upon depletable resources. Production of building materials leads to irreversible environmental impacts. Using eco-friendly materials is the best way to build a eco-friendly building.

Stone quarrying leads to eroded hills, like this picture showing the site of makarana marble quarry, brick kilns in the fringes of the city lead to denudation of topsoil, dredging for sand damage the river biodiversity etc.What is Eco-friendly material ? Dictionary: describes a product that has been designed to do the least possible damage to the environment US EPA EPP program defines as:products or services that have a lesser or reduced effect on human health and the environment when compared with competing products or services that serve the same purposeThus we talk of two issues one that it does the least possible environmental damage and two that it is a comparative scale as there are very few materials that are completely eco-friendly.

One more point to note when we talk of eco-friendly construction is that it consist of two parts Material and Technique.A material by itself can be eco-friendly, e.g. Bamboo.Or Even conventional materials can become eco-friendly based on the construction technique that is used. e.g. rat trap bond developed by Lauri Baker, which require less number of bricks and are more heat insulating than normal walls and therefore eco-friendly.Properties

The various properties of the Eco-friendly materials and techniques are Materials can be eco-friendly also if they can assist in reduction of the energy used in the building during operation and maintenance.it is difficult to get a material that has all these properties, and it thus becomes a comparative assessment to identify eco-friendly materials.Source of Materiala.Renewable sourceRapidly renewable sources e.g. wood from certified forests

b. Reuse of WasteSalvaged products e.g. old plumbing, door framesRecycled contents agriculture/ industrial waste e.g. Bagasse BoardEmbodied EnergyScalar total of energy input required to produce the product including transporting them to the building site

Aluminium and steel has the most embodied energy because to the high energy required to produce them. Compared to timber that requires very less energy for production.Reduce PollutionAir Pollution- Use of materials with low VOC emissions e.g. Cement Paints

Water Pollution Materials that prevent leaching.

Land Pollution- Materials that reuse waste that would otherwise have resulted in landfill. e.g. Flyash Bricks.Performance

Reduce material useThese are energy efficient and also help reduce the dead load of a building. e.g. FerrocementDurability & Life SpanMaterial that are exceptionally durable, or require low maintenance e.g PVC pipes.Materials can be eco-friendly based on how they perform. Use of certain material or techniques can reduce the amount of material required.Durability The longer the life of a material the lesser it is required to replace and thus reduces the quantity required to produce.Energy ConservationMaterials that require less energy during construction e.g. precast slabs.

Materials that help reduce the cooling loads- e.g aerated concrete blocks.Products that conserve energy e. g. CFL lamps.

Fixtures & equipments that help conserve water e.g. Dual flush cisternsRecyclableReuse or Recycle as different product e.g. steel, aluminum.

Biodegradable that decompose easily e.g wood or earthen materials.Eco-friendly MaterialsConventional Eco-friendly materials1. Bamboo, Bamboo Based Particle Board & Ply Board, Bamboo Matting2. Bricks sun dried3. Pre-cast cement concrete blocks, lintels, slab. Structural and non-structural modular elements4. Calcined Phospho-Gypsum Wall Panels5. Calcium silicate boards and Tiles6. Cellular Light Weight Concrete Blocks7. Cement Paint8. Clay roofing tiles9. Water, polyurethane and acrylic based chemical admixtures for corrosion removal, rust prevention, water proofing10. Epoxy Resin System, Flooring, sealants, adhesives and admixtures11. Ferro-cement boards for door and window shutters12. Ferro-cement Roofing Channels13. Fly-ash Sand Lime Bricks and Paver Blocks14. Gypsum Board, Tiles, Plaster, Blocks, gypsum plaster fibre jute/sisal and glass fibre composites15. Laminated Wood Plastic Components16. Marble Mosaic Tiles17. MDF Boards and Mouldings18. Micro Concrete Roofing Tiles19. Particle Boards20. Polymerised water proof compound21. Polymerised water proof compound22. Portland Pozzolana Cement Fly-ash / Calcinated Clay Based23. Portland Slag Cement24. RCC Door Frames25. Ready Mix Cement Concrete26. Rubber Wood Finger Joint Board27. Stone dust28. Water proof compound, adhesive, Polymer, PowderPotential Eco-friendly materials & techniques1. Bagasse Board BMTPC2. Bricks from Coal Washery Rejects -CBRI, Roorkee3. Building Blocks From Mine Waste SERC4. Burnt Clay FlyAsh Bricks CBRI, Roorkee5. Coir Cement Board CBRI, Roorkee6. Compressed Earth Blocks BMTPC7. EPS Composites and Door Shutters -CBRI, Roorkee8. Fibre Flyash Cement Boards -BMTPC9.Fibre Reinforced ConcretePrecast Elements, Wall panels, Blocks, Manhole Covers SERC10. Fibrous Gypsum Plaster Boards CBRI, Roorkee11. Flyash Cellular Concrete, Flyash Cement Brick, Blocks BMTPC12. Flyash Lime Cellular Concrete CBRI, Roorkee13. Flyash Lime Gypsum Brick BMTPC14. Insulating Bricks from Rice Husk Ash- Central Glass and Ceramic Research Institute, Kolkata15. Jute Fibre Polyester -BMTPC16. Non Erodable Mud Plaster CBRI, Roorkee17. Polytiles CBRI, Roorkee18. Timber from trees such as Poplar, Rubber, Eucalyptus BMTPC19. Precast walling roofing components CBRI, Roorkee20. Prefab Brick Panel System CBRI, RoorkeeRecommended eco-friendly alternatives1. Structural System Alternatives to Cement Concrete (plain / reinforced) cement, sand, aggregate, steelBase Materials for R.C.C. and Steel Systemsa. Pozzolana Material content (Fly-ash / Slag / Calcinated Clay) attained through use of Blended Portland Cement (BPC) and /or direct addition of pozzolana materialb. Sand and aggregate from pulverized debris and /or sintered fly-ash for concrete and mortarc. Recycled steel forms and reinforcement barsAlternatives Systemsa. Ferro cement andb. Pre-cast components for columns, beams, slabs, lofts, balconies, roofs etc.c. Ready Mix Concreted. Use Resinous curing agents2. MasonryAlternatives to Fired clay bricks, cement concrete blocks, stonea. Use of Fly ash + sand + lime bricks / blocksb. Pulverized debris + cement bricks / blocks,c. Industrial waste based bricks / blocks,d. Aerated lightweight BPC concrete blocks,e. Phospho-Gypsum based blocksf. Lato blocks (laterite + cement)3. Mortara. Sand from pulverized debris and / or sintered flyashb. Pozzolana Material content4. Plastering Alternatives to Cement, sand, plaster of paris, gypsuma. Calcium Silicate Plasterb. Cement Plasterc. Use of Fiber reinforced clay plasterd. Phospho-Gypsum Plastere. Non-erodable Mud Plasterf. Use Resinous curing agents5. Roofing and ceiling- Alternatives to Ferrous / non-ferrous sheets, tiles, thatcha.Fibre Reinforced PolymerPlastics instead of PVC and Foam PVC, Polycarbonates, acrylics & plasticsb. Micro Concrete Roofing Tilesc. Bamboo Matt Corrugated Roofing Sheets6. Flooring, paving and road workAlternatives to wood, stone, ceramics, concretea. Fly ash / industrial waste / pulverized debris blocks in BPCb. Lime-pozzolana concrete paving blocks for all outdoor paving.c. Bedding sand from pulverized debris7. Tiles for interiorsa. Terrazzo floor for terraces and semi covered areasb. Ceramic tiles (non-vitrified)c. Mosaic Tiles/ Terrazzo Flooringd. Cement Tilese. Phospho-Gypsum Tilesf. Bamboo Board Flooring8. Windows, Doors and openings Steel, aluminum, timber, glass, R.C.C., PVC, Stonea. Ferro cement and Pre-cast R.C.C. lintel, chajja and jalisb. Masonry bond combinations for jali workAlternatives to Timber and Aluminum / Steel framesa. Ferrocementb. Pre-cast R.C.C. Frames/ Frameless Doorsc.Bamboo Reinforced ConcreteFramesd. Hollow recycled steel channels and recycled Aluminium Channels and ComponentsShutters and Panels alternatives to timber, plywood, glass, aluminuma. Red Mud based Composite door shutters,b. Laminated Hollow Composite Shuttersc. Other wood alternatives9. ElectricalAlternatives for Aluminum, brass, PVC, G.I., S.S.a. Use unplasticised PVC or HDPE productsb. Where applicable use products with recycled aluminum and brass components10. Water supply, Sanitary and Plumbing Systema. R.C.C., uPVC, G.I., C.I. pipes instead of lead, A.C. pipesb. Where applicable use products with recycled aluminum and brass components for fittings, fixtures and accessoriesc. Use Polymer Plastic (Random) hot / cold water system instead of G.I.d. Manholes and covers use Pre-cast cement concrete and high strength unplasticised PVC instead of C.I.11. WoodRenewable timber from plantations with species having not more than 10 year cycle or timber from a government certified forest / plantation or timber from salvaged woodPlywood should be phenol bonded and not urea bondedUse of MDF BoardInstead of Plywood:Bamboo Ply/Mat Board/ Fibre Reinforced Polymer Board,/ Bagasse Board /Coir Composite Board /Bamboo mat Veneer Composite/ Finger Jointed Plantation Timber Board / Recycled Laminated Tube Board / Aluminium-Foil+Paper+Plastic Composite Board.e. Use of Mica Laminates and Veneer on Composite boards instead of natural timber.12. Water proofing chemicals, additives, sealants and adhesivesa. Use of water based chemicals instead of solvent based.b. Epoxy resins instead of tar felt / pitch13. Painting, Polishing, Priming and similar surface finishinga. Use of Cement Paint / Epoxy Resin Paint for external surfacesb. Use of Water based paints, enamels, primers and polishesFaswal is a great alternative to traditional foundation materials. It uses waste materials from wood mixed with cement to create a strong and durable foundation material. Faswal can be used instead of cinder blocks and is excellent for bottom foundation and wall construction. It is naturally strong, fire and wind and sound resistant, and has excellent insulating factors.Two great choices for insulation are straw bale and cotton. Straw bale is used for many reasons; it is generally less expensive than other forms of insulation and has great insulating factors. It is very durable and can easily support a lot of weight; additional supports are not usually needed, which cuts down on the use of treated lumberCotton insulation is a good alternative to fiber glass insulation. This type of insulation is derived from natural cotton fibers that are recycled into insulation. It is very convenient and comes in a similar batting shape as traditional insulation. It is also very easy and safe to install and has a high fire rating and wonderful sound insulating qualities.Earth plaster and milk paints are excellent eco-friendly choices for building materials. Earth plaster is made out of mud and can be used as an interior or exterior finish. You can manipulate the plaster to create various finishes; including curves, angles, and clean finished walls. It does not need to be painted, as it comes in a variety of colors that are natural to the mud.Milk paints are made up of milk earth and pigments from the earth in a variety of colors. Milk paints provide for a wide variety of colors without the use of harsh chemicals that are found in traditional house paints.There are some great choices for eco-friendly flooring; cork flooring, bamboo, and recycledwood flooringare all excellent options. Cork flooring is a great alternative to wood; it is environmentally friendly; it only uses the bark from the tree and does not kill the tree as a result from harvest. The bark is a great renewable resource as it grows back completely within nine years. Cork flooring is very comfortable, durable, and insulating, and can last for many years.Bamboo is another great choice for a renewable resource. Bamboo is not a wood at all, but rather a grass that only takes three years to fully mature. When processed, bamboo can have an attractive appearance similar to wood flooring. It is a very strong and durable type of flooring and performs very much like a traditional hardwood floor.If you are determined to have wood floors, recycled wood flooring is a great option. This type of flooring often uses hardwood that would otherwise never be used again. The wood may be taken from demolition sites or trees that were torn down but never used. It is often cheaper to prepare recycled wood instead of new wood product and is just as beautiful and durable as new wood.There are even materials for countertops that are eco-friendly. Two great choices are recycled glass/cast concrete and recycled plastic. Recycled glass/cast concrete uses both recycled glass and concrete with recycled materials in it. The glass used in this material can not be broken down any further, so it is a good fit for countertop construction. It can also be used in the bathroom and surrounding fireplaces.Recycled plastic is another good option for countertops. You can obtain many different styles using different types of recycled plastic. It can also be used in bathrooms and other places around the home. It is very durable and can stand up to heat, depending on how it is manufactured, and is very water resistant.There are many different eco-friendly building materials available on the market today. You can virtually build and furnish an entire home from only eco-friendly materials. Eco-friendly materials are not only good for the Earth, but are equally good for your wallet. Many of the building materials that are eco-friendly have great insulating factors or are cheaper to produce than traditional materials.