What Type Of Subfloor For Hardwood - Flooring - DIY Chatroom Home Improvement Forum

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Old 07-18-2013, 06:43 PM   #1
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what type of subfloor for Hardwood


I am installing 3/4" Solid Hardwood into my living room. I've pulled the carpet and am beginning the prep work.

Some installers say that I can install directly on to the OSB Floor and not install subfloor. is this true? Should I lay down a subfloor on top of that prior to installing my hardwood?

What type should I use? how thick should it be?


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Old 07-18-2013, 06:45 PM   #2
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the OSB on top of your floor joists IS your sub floor. Make sure it's secured properly and thick enough for your joist span to prevent sagging. Re-nail or screw if necessary.


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Old 07-19-2013, 03:39 PM   #3
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I agree with this guy, thick sub floor is essential part for top flooring.
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Old 07-22-2013, 02:23 PM   #4
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Originally Posted by alexjoe View Post
I agree with this guy, thick sub floor is essential part for top flooring.
Are you agreeing with the original posters advisor? Or poster #2??

I am in the exact same position. Have nearly all my old flooring removed. The original wood floor I am removing was nailed right to the OSB with only tar-paper underneath.

What kind of sub-floor are you recommending??
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Old 07-22-2013, 06:27 PM   #5
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If you have 3/4" osb you can staple or nail right to that---

How was the flooring that you removed? Was it holding well?

I prefer staples ---but never had a reason to fault the cleats---
My flooring guy uses staples and said that demolishing a stapled flood is much more work than removing a floor set with cleats---
New members: Adding your location to your profile helps in many ways.--M--
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Old 07-26-2013, 05:57 PM   #6
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The general recommendation I see from manufacturers is CD Exposure 1 grade plywood or OSB Exposure 1. minimum 5/8" thickness on 16" o.c joists or 3/4" thickness on 19" joists. Always satisfy manufacturer's requirements.


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hardwood , how thick? , subfloor , what type

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