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Question DetailsAsked on 9/21/2011

The carpet in our custom built home started to stretch and roll after 3 yrs. We have central air. In some areas it has repeated after stret

We have had the carpet restretched and some areas have repeated. We have different types and brands of carpet impacted. We've had the issue on all three levels of our home.

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1 Answer


Different brands and different types of carpet doing the same thing tend to indicate a common problem that isn't the carpet's fault.

What type of underlay was used? Is it possible the mat or pad below the carpet is all the same, but was installed wet or improperlly?

You have mentioned you have central air, have you had any humidity problems in general? A short-cycling A/C can cause condensation / moisture, which perhaps is getting absorbed by the carpets?

What kind of subfloor was installed? Some builders will use OSB or lower quality particle/glue boards, which typically do not handle water as well as plywood. Is it possible your sub floor had a lot of rain or moisture before the roof was installed, and now that the house is enclosed and conditioned that moisture is finally working its way out of your subfloor (and being absorbed by the carpet)?

Another possibility is a lot of builders are now going to a 24" on center for floor trusses. But they are not always increasing the the subfloor thickness, so after a few years, the floors begin to flex / bounce between trusses. It is possible since your carpet was not glued that as the subfloor flexes, the carpet stretches, then bunches or rolls when the floor comes back up. It doesn't take a very noticable bounce over time to pull the carpet loose.

Since it is throughout your house and a variety of manufacturers, I suggest you find the common elements and rule them out. If they were all installed by the same people, it could be improper installation. If they were all using the same pad or underlay, it could be a defect or installation defect there. If the house is having trouble with air humidity or condensation, that may be a cause. The sub floor may be moving too much or have trapped moisture.

A professional carpet installer should be able to help you rule out and narrow down to the problem. It might be as simple as using an adhesive on the carpet to keep it in place. It might require all new carpeting. Be sure you are confident you have found the cause before proceding with any major repairs. Good luck.

Answered 9 years ago by Kenny Johnson

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