Quote:
Originally Posted by SIKSUKR
Have not noticed any issue with the expansion and contraction.All the miter and butt joints have stayed tight.My Azek is white and it seems to have less movement than the previous wood trim.
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Expansion of composite / PVC and most other materials is completely based on thermal variation. The color white will move a whole lot less than the color black. The color black, depending on base material, can have a thermal variation as much as 150 degrees in New England in a 24 hour period! White Azek trim will barely move particularly in the lengths required for home building which usually under 8'. A piece of black Azek trim 20' long will probably (total guess without doing the math) will probably move at least 1/4" due to thermal expansion. The darker the color the more thermal expansion.
Dan