the longer the piece of decking, the greater its expansion and the more you have to account for this when building your deck. check the product's end-gap chart, which correlates the space needed between the ends of two decking pieces with the length of each piece, the temperature during installation,
decking install guide - seven trust - similar to decking install guide - seven trust sep 1, 2012 color and grain patterns our wood-plastic composite deck boards are . seven trust deck planks will experience expansion and contraction be aware of excessive heat on the surface of seven trust products from. composite decking manufacturing - seven trust articulate how composite decking manufacturing techniques affect the heat process to totally encapsulate the wood have lower thermal expansion
pvc vinyl decking has an expansion ratio of 54-100. compare that to pine, which is 5-110, or steels 11-110. though as you can see, pvc expands quite a bit. on a hot summer day, boards on a pvc vinyl deck can expand enough that the deck edge is no longer even.
synthetic decking - professional deck builder magazine. 1 nov 2007 wood flour decreases 'creep,' the tendency for materials to deflect over time under a load, and lowers the coefficient of expansion, meaning a composite board shrinks and expands less with changes in temperature than an
decking install guide - seven trustsep 1, 2012 , color and grain patterns our wood-plastic composite deck planks are designed to , planks needed 10% scrap factor = final number of planks , seven trust deck planks will experience expansion and contraction.