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Old 03-21-2012, 06:09 PM   #1
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Anyone else have no subfloor?


Old house with exposed 3/4" pine T&G across joists (and under walls).

After 70 years some of the tongues have broken in traffic areas - with sags and squeaks.

Thinking of putting a new floor on top, but I don't want to raise the floor any more than necessary. Any sort of thin alternative material to sandwich between old and new floors? Or 1/4 inch ply?

What would you do?

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Old 03-21-2012, 07:13 PM   #2
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Anyone else have no subfloor?


Quote:
Originally Posted by Queso Bandit
Old house with exposed 3/4" pine T&G across joists (and under walls).

After 70 years some of the tongues have broken in traffic areas - with sags and squeaks.

Thinking of putting a new floor on top, but I don't want to raise the floor any more than necessary. Any sort of thin alternative material to sandwich between old and new floors? Or 1/4 inch ply?

What would you do?
If your going to do that Type of work do it right, take up the floor that sits on the joists.
Then inspect your joists.

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Old 03-21-2012, 07:42 PM   #3
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Anyone else have no subfloor?


Not that big a job to cut out what you have and replace with 3/4" T & G Advantech subflooring.
Use a Toe Kick saw to cut it out right along the bottom plates.
Once the Advantech is done you will have a far more solid subflooring. Your going to have to go back over that with something because it's not made to be directly walked on.
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Old 03-22-2012, 10:45 AM   #4
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Anyone else have no subfloor?


thanks jetswet and joe,

wow. I didn't think of removing the existing floor, but it makes sense if I don't want to raise the level of the new floor too much.

joists are good, and I want to lay a new solid hardwood (3/4"?) on top

so there is no thin layer (maybe a ditra-like membrane) that can help beef up the existing subfloor and help distribute the loads of the new wood floor?

or should I just accept the idea of cutting out the old if I want a solid floor?
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Old 03-22-2012, 11:16 AM   #5
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Anyone else have no subfloor?


What joe stated would be the best method here,
Advantech is the top of the line and will last you a very long time.
If your going to put hardwood down all the better to replace the subfloor with new.
Joe will be able to tell you If all you would need is 3/4" of advantech between joists and hardwood
And also not shore if it's rosin paper friendly?

I will also say that no mortar will save your existing subfloor it will just crack and more problems. Ditra is just a water proof membrane for Tileing.

Hope this helps
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Old 03-23-2012, 05:49 AM   #6
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Anyone else have no subfloor?


Quote:
Originally Posted by brilhoservices
Its fine. Its not the way things are done today, but the house has been standing for 80 years. Leave it alone or you will create problems for yourself. Enjoy the home and stop worrying about things.
Huh?.....

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