Why does composite wood siding fail?
Several factors contribute to the failure of composite wood siding: the performace of the product itself, the quality of its installation, and/or the design of the sturcture. Composite siding does not handle water very well. Water droplets collect on the bottom edge of the siding after a rain shower or morning dew. The wood fibers expand and contract causing the boards to crack, buckle, peel and delaminate. As the paint cracks it allows more moisture and damage to occur. Fungi and bacteria are also attracted to wet wood. Many new homes lack sufficient gutters and overhangs. Most homes are not painted using the recommended number of coats of paint. Homes today are sprayed with machines and the bottom edge of the boards are not properly protected.
