Is it normal for water to pool on composite Deck Boards?

by Ken Hydinger
(Brookfield, CT USA)

Last fall my contractor installed a deck at my home using Fiberon Paramount PVC Decking. I didn't notice any pooling of water on the deck boards during or after a rain. The deck was badly damaged by a tree earlier this spring. For the replacement deck, we choose the Fiberon ProTect Advantage Decking in Grey Birch. The Water pooling on the deck boards is very noticeable, and only dissipates through evaporation.

We had the Fiberon Representative visit today to determine if the product was defective. Naturally, he concluded that there was no cupping on the boards that that this is normal for composite deck boards to hold water. The material supplier was also present. I asked him if he had seen this before. He said no.

I am being told by a number of people that composite deck should not pool water on top the deck boards. I wanted to check with the experts on this forum to get your option.

Is this a typical problem with Fiberon. Should I with a different line of Fiberon or a different manufacturer?

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Oct 22, 2023
Rating
starstarstarstarstar 		Water on pvc deck
by: Anonymous

I recently had a pvc deck replace my 25 year old wood deck. It is pooling water badly.I am disappointe as I have to blow it off. Sure worried about the winter and ice. Is there any solution?triage
Mar 23, 2023
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starstarstarstarstar 		Why not do it yourself? NEW
by: Anonymous

Next time, try to do it yourself. That way you can control what’s done.
Check this, it’s a good starting point:

https://youtu.be/-2K29d6uv3k
Mar 11, 2023
Rating
starstarstarstarstar 		cupping and sagging
by: Anonymous

My deck was built in may 2019.The cupping occurred in several places but no harm done.Until the first freeze 7 months later. Then in August 2022 I noticed extreme sagging. Trex finally asked me to take more pictures. Could the Trex be bad






Nov 11, 2022
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starstarstarstarstar 		Pooling Water NEW
by: Tim Cushman

I recently had a Trex decking installed over the existing framing that originally had TimberTech decking which needed to be replaced after 20+ years.
After the installer washed off the deck when finishing up, he and I noticed a lot of water laying on the individual boards, at the edges. We called it "cupping". Laying a level on the boards showed that the individual boards seemed to be "cupped" at the edges and that is why the water remained. Our big concern is that now that the temperature is dropping (winter time), this "cupped" water will become ICE !
Correspondence with Trex has led to them denying there is "cupping" but blaming it on the installation and then on the framing. I am getting nowhere presently with Trex. I would like to hear from others who may have had the same experience and how, if they did, resolve the issues. I can't afford to hire a lawyer but I need this corrected. The installer has been sympathetic with me but it hasn't helped. email me: timothycushman@gmx.com

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