I purchased a new grill mat and didn't know it until I opened the box that it says "do not use on composite decking". I contacted the grill mat mfg and they told me that the mat has a Polypropylene backing and that I should check with Azek for info. I contacted Azek and they are not responding. Does any one know if there are any issues? From what I gather, some composite decks have a chemical incompadibility with polypropylene that could cause them to stick to the deck. The mat has been out there for about 2 weeks with no issue, maybe the issue is only when it's hot?? Maybe it is only certain brands?? I know that Azek and Trex are different in material makeup. Any info would be helpful.

I paid a guy to build me a large screened in patio house addition, and he did it all wrong. To the point it looks terrible, is unsafe and is actually causeing damage to the house itself. Long story short, I am now dealing with a mess and I am trying to gather information. At the moment I am searching for Dallas Building codes requirements applying to the header that supports the roof all the way around, and well as codes applying to the rafters and spacing of the rafters. This is not by any means my area of expertise and I don't even know where to start. I went to the cityofdallas website but am still not having much luck getting the info I need. If anyone can point me in the right direction that would be so helpful. Thanks!