2012年7月11日星期三

wood plastic composite wall siding


Imagine stepping barefoot onto what appears to be a redwood deck in 100 degree weather and yet your feet are comfortable. No splinters, no slipping, no warping - all this because you happen to be standing on plastic lumber. This composite material is used to produce building products such as decking, door and window frames, and exterior moldings. Treated lumber, which is most frequently used for decking is often considered hazardous and must be disposed as hazardous waste making plastic lumber a very desirable alternative. Additionally, since plastic lumber is impervious to the elements (e.g., wind, water, sun, insects and salt air) - the typical enemies of wood, it can be used for many residential and even commercial applications. So go ahead, use plastic lumber and starve a termite! composite wood and plastic timbers
Recycled wood/ composite plastic lumber is made from a 50/50 mix of plastic resins and reclaimed wood such as sawdust from manufacturing plants that would otherwise be discarded. Plastic composite lumber is one of the prime uses for recycled plastic trash bags and waste wood fibers. Manufacturers claim that recycled wood / composite plastic lumber is more rigid than 100 percent recycled plastic lumber because the wood fibers act as reinforcement. In addition, the plastic encapsulates and binds the wood to resist moisture penetration and degradation from fungal rot, bringing together some of the best properties of both wood and plastic. wood plastic composite wall siding
Plastic lumber has minimal impact on personal health since it does not contain any preservatives or chemical additives found in treated lumber. Being maintenance free keeps homeowners away from inhaling noxious fumes when applying treatments that would otherwise be required.
Plastic lumber has minimal environmental impact since it keeps material out of the waste stream and incinerators and can be recycled again at the end of it's useful lifetime. An estimated 12% of the U.S. solid waste stream is plastic, and of that 19% is high-density polyethylene (HDPE). More than 750 recycled milk jugs and detergent bottles are used to make a single four foot long plastic bench - thus providing an end use for materials already in the waste stream. composite and plastic cladding
Minimizes wood use. Wood is the most extensively used building material. The average house contains about 13,000 board feet of framing lumber. In ideal circumstances wood would be a renewable resource, yet given present logging techniques and growing demand , it is not. Replacing virgin wood with plastic lumber is a more sustainable alternative.
Plastic lumber can be installed using common carpentry tools and will cut, drill and rout very cleanly because there is no grain to split or chip. Both screws and nails with a hot-dipped galvanized coating are acceptable fasteners. Again, because there is no grain, pre-drilling is not required for self drilling screws. Pneumatic nailers also work well with this material. composite wood dubai

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