A friend of mine has purchased enough of Dow Symmatrix for a fairly large sized deck. Grey color which is officially called "driftwood" apparently.
It is yellowing in the sun while sitting in the driveway. Almost to the same yellow that old newspaper gets after a few decades out in the open.
The salesman told her words to the effect of "That's an industry wide problem with gray composites: they yellow due to the tannin within the wood particles but it'll fade back to gray in a week."
Seems sketchy to me.
It's been a few weeks and it's only staying yellow.
Has anyone seen this? My composite decking was Rhino Deck, and it faded just fine from brown to light light brown with no yellowing---not much information for my friend but it was the only comparison I had.
Any suggestions? She's nervous enough to return the entire thing.