Subfloor question

Old 09-02-18, 02:02 PM
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Subfloor question

I am currently renovating the upstairs of my house. I originally had carpet throughout the upstairs and I will be converting to hardwood. After tearing up the carpet, the subfloor is MDF so I purchased 3/4 plywood to lay on top but have yet to install it.

I just noticed afternoon doing some random work upstairs that the mdf looks to be 1/4 mdf and there is actually a layer of 3/4 plywood underneath.

Is it ok to install red oak hardwood flooring directly on top of the existing MDF / 3/4 plywood? Or should I put down the plywood I already purchased? Im just afraid the joists wont be able to hold all that weight now. I have 2x8 joists...
Old 09-03-18, 03:20 AM
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I'd remove the 1/4 and re evaluate.
Old 09-03-18, 07:41 AM
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1/4" layers of anything rarely provide any value in a subfloor.

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