We replaced our porch and used English mahogeny Azek. A&B supplied the product. I compared just about all the products out there requesting samples of just about every color from the manufacturer. I had enough that my builder now has nearly a complete set.
As posted earlier Azek is full synthetic with a slightly thicker textured cap than the rest. The Trex/composite products are indeed nearly 3 times heavier.
Very important!!!!!! If you go with Azek you need to have the cross members supports spaced closer than is code when using long lengths or you will get bowing. I have an area that wasn't despite mentioning my concerns to the builder and I do indeed have bowing. It is not bad but noticeable and annoying to me. This is not a concern for Trex, it is as rigid as cement and about as heavy.
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