Q: Your column "There are options for cleaning vintage Trex composite decking" was thorough about cleaning, but it really didn't help the homeowner in the long run. Our vacation house has Trex decking ...

Picture this: you and your family gathered outside, seated on comfortable cushioned furniture. Charming string lights hang above as you roast marshmallows over a fire pit table. Sounds perfect, right?

Q. We put down Trex decking in 2008. The composite lumber has developed dark spots all over it. It started with a few spots and has multiplied over the two-year period. What is causing the spotting, ...