Do Cellular Pvc Floor Boards Expand And Contract

Assembly of shrink fits heating temperatures of shrink fits.

Do cellular pvc floor boards expand and contract.

For centuries decks have been constructed using traditional lumber with little regard for proper deck board spacing. When you re trimming out a window there s not much movement at all but installers will need to pay special attention on. Below 60 degrees leave a 1 8 in. But it holds paint well.

You don t have to paint it. Builders like cellular pvc trim for a lot of reasons. Gap for every 18 ft. Pvc trim boards will expand and contract with wide variations in temperature.

For cellular pvc trim as well as most exterior building products the focus is on linear movement since movement along the product s length is what needs to be controlled especially where there are long runs of trim if your cellular pvc trim is going to move it will be most noticeable in the fascia frieze or rake boards on a house. This article covers why the material type and the fastener used need to be considered. If it s between 60 and 80 degrees leave a 1 16 in. If you re installing trim in temps higher than 80 degrees f cut pieces to fit tightly.

Astm d2665 standard specification for poly vinyl. I use pvc glue in the joint and fasten the joint to the subfascia with trim screws within 2 inches of the end of each board. It s lightweight durable and waterproof. There isn t much difference in price between pvc and composite decking either.

Both are resistant to insects and aren t prone to mold or rot. After installation cover the gap with acrylic or. I also apply construction adhesive between the subfascia and the pvc in the area of the joint. That s not to say pvc trim stays entirely stationary.

Far from being the durable low maintenance product many homeowners hope that it will be pvc trim can lead to several aesthetic and structural problems over time. On long runs i cut 15 degree or 30 degree scarf joints. Deck board spacing is crucial for the looks and health of a deck it s not one size fits all. Pvc trim is made from a honeycomb cellular structure of polyvinyl chloride.

Wood moves due to moisture but plastic products will expand and contract with changes in temperature says steve booz vice president of new product development and product management at royal building products. Finally i glue the butt joints.