Since a board facing due south at a 45° angle will not exceed a temperature of 48.8 °C, the maximum temperature should never exceed approximately 51 °C. Keep in mind the heat distortion temperature of WPC Board is approximately 68 °C.
There are a couple of methods used by contractors and OEM’s to seal the exposed cells on WOODTREK Board. One technique is to wipe the exposed area with a solvent. Solvents tend to soften or melt the cells sealing them from dust and dirt. Another technique is to sand the exposed cells with a very fine 320 grit sand paper and then either wipe them with solvent or paint the area. The fine sanding reduces the cell size, allowing better paint coverage. In some cases, sanding with 320 grit paper and then wiping down the area with solvent eliminates the short term need for painting.
No. Cellular PVC will not support combustion and will only burn when in direct contact with a flame source. It also carries a flame spread rating of less than 25 giving it a Class “A’ fire rating when used in an exterior application.
WODDTREK products don not require paint for protection, but may be painted to achieve a custom color or to cover nail holes that have been filled. If you choose to paint, use 100% acrylic latex paint example Dulux Weather shield max.
Follow the paint manufacturer’s preparation steps. To ensure good adhesion, the surface of the product should be clean, dry and free of dirt, mildew, chalk, grease and any other surface contaminants before applying paint. Cleaning can be accomplished using a mixture of a mild detergent and water. Other cleaning agents include mild household cleaners, or degreasers for more stubborn stains. Prior to cleaning, it is a good practice to fill all nail holes and remove any marks or blemishes that appear during the installation process. Sanding the surface is an acceptable method of removing blemishes if painting. However, sanding the original exterior surface will expose the micro cell structure.