Anyone worked much with these azek products? I wrapped some beams and a box sill on a deck with the azek 1x12s for a guy last summer, scarf joints at seams and I think I fastened it every 8" as recommended with trim screws. The stuff has shrank and pulled apart 1/4 inch at least at the scarf joints. I installed the azek porch floor as the manufacturer recommended with similar trim screws thru the tongue. At the time of installation I was impressed with the durability of the stuff, my help dropped his sharp chisel on it and it just bounced off it, not even making a mark. The home owner called me a few hours ago telling me he and his wife were laying in bed last nite hearing the porch popping and cracking loudly. He thought we didn't set the post deep enuf and the porch was heaving. We put them 4' in the ground, they put water lines in at 42" around here so I know we are safe there. He called back and said when he got home he walked up on the porch and the floor was popping and cracking loudly as he walked, he compared it to a .22 riffle shot cracking off. Anyone experience this before, it is cold here, 4 this morning and 11 degrees now.