What Is This?

gzec

I removed a 20sq ft section of oak hard wood floor today that buckled from water damage. Under the oak is what looks like mortar on top of OSB. This is in a townhouse condo on the second floor. What's the deal? According to the customer there was carpet before she had the wood put down. Why is there mortar/cement in the living room/ dining room area?

ron schenker

Could be a self leveling compound to true up the subfloor before laying the hardwood. OK for minor deficiencies but not any structural problems

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Don't worry, the baseboard will hide it!

turner flooring

Probably floor prep. From previous installation. carpet guys lay over everyhting they can get away with normally. Good luck..http://turnerflooring2.com

firemike

How thick is it? Around here there are a lot of former apartment buildings turned into condos and most of them had a 1 1/2" lightweight concrete over OSB floor on the 2nd floor, it helps reduce noise and acted as sort of a fire barrier.

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-Mike-

Charles Bagley

Probably the self levelling compound.

slowsol

Sounds like gypcrete. As mentioned before, it is a sound barrier as well as a added fire rating. We are building apartments right now that use a 3/4'' layer on the second and third floors.

http://www.maxxon.com/index.asp

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-John

We'll have to grab a longer board. I forgot to put the wood stretcher in the truck today.

Blackbird

gypcrete

eXpatRioteX

+3.