DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Flooring > What is my subfloor made of ?




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Old 08-18-2014, 05:47 PM  
shycas2008
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Default What is my subfloor made of ?

Hello all !

Going to be tearing up the carpet and installing either a wood floor or a concrete floor. I have not decided. I live on the second floor in a condo made in the 1980's.

Anyways, pulled up some of the carpet / carpet pad and was looking at the subfloor; an area that was about 3x4.

It is a chalky hard, consistent flooring material. There are staples and floor tack nailed into it. Little cracks here and there. Stuck a knife into it and pulled a little came out like sand... It reminds me of drywall but it can't be drywall right ? I would like to redo my floor but I want to know what this material is before I even start.



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Old 08-18-2014, 05:58 PM  
oldognewtrick
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Post a picture of the sub floor please. It will help a lot.



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Old 08-18-2014, 06:05 PM  
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Just a guess but it sounds like light weight concrete.

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Old 08-19-2014, 02:34 PM  
shycas2008
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If you look at the subfloor - there are little gouges and cracks. Some staining - not a big deal. But some nice, new polished concrete or hardwood would look stellar in this home. Still confused on what it is !

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Old 08-19-2014, 04:29 PM  
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I'd agree with Neal. Looks like lightweight concrete. Often used on upper floors in place of double 5/8 sheetrock on the ceiling below to reduce fire spread.

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Old 08-19-2014, 04:42 PM  
shycas2008
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This lightweight concrete - would it be suitable to lay a stain / seal over ? Or is that crazy talk ?

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Old 08-19-2014, 05:04 PM  
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there is a multitude of products that might be called light weight concrete, some might work well with stain. I guess testing would be the plan.

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Old 08-19-2014, 08:37 PM  
samfloor
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Sounds like gypcrete. It is used to reduce weight. Most of it gets powdery after a few years. Probably will need sealer to do anything with it.

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Old 08-22-2014, 08:22 PM  
shycas2008
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Thanks Everyone !

I will continue to look for a resolve on my terribly ugly subfloor / carpet. You have all been extremely helpful !



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