Subfloor Cracks: Wood Putty to Fill Them?

ozziepuppyJune 16, 2010

I am currently filling in the cracks in my subfloor in my living room. I am using a wood putty with wood fibers in it to fill in the cracks but (a) it is very time consuming; (b) it uses quite a bit and the container it comes in is fairly small; and (c) the small container is kind of expensive.

Is there a better way to fill in the cracks and nail holes? Any suggestions would be greatly appreciated.

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woodfloorpro

Why would you fill subfloor cracks?

    Bookmark   June 17, 2010 at 9:27AM
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ozziepuppy

Because the flooring that is going over it is not carpet and pad (which is what I just ripped out). It is a "floating" floor. I doubt the cracks would make a difference but I am filling them just the same. Actually, I have discovered that Home Depot has larger containers of the wood putty (I think Minwax wood putty comes in a gallon container) and if they have it in stock I will try that. I had been using a small container of Elmer's wood putty.

    Bookmark   June 17, 2010 at 9:57AM
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echoflooring

If they are small enough to fill, it is not needed for a floating floor. Waste of time, but if it makes you happy.......oh well..

    Bookmark   June 18, 2010 at 12:32AM
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glennsfc

Are we talking a wood subfloor?

Be more concerned that your floor is "flat" to within the floor manufacturer's requirements for a successful installation.

    Bookmark   June 18, 2010 at 2:16PM
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brickeyee

Are you filling cracks in the sub-floor or gaps between boards?

Even plywood sub-floors need room for movement (not much, but they still need some room),

Plank type sub-floors are laid with gaps between the planks for the same reason.

If you fill the cracks the sub-floor can buckle.

Since movements downwards is usually restricted, the buckles move upwards creating bulges in the floor.

    Bookmark   June 19, 2010 at 10:39AM
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ozziepuppy

Gaps between boards. Oh great, now I have royally screwed up the subfloor by filling in the gaps. Things are not going well on this remodeling project. Not only are the gaps filled in, but the floor is not perfectly level. Are we looking at a new subfloor prior to installing the Mannington Adura Planks? Anyone know how much that costs in the midwest? This project has gotten well out of hand.

    Bookmark   June 21, 2010 at 9:42AM
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brickeyee

Level does not matter as much as flat.

    Bookmark   June 21, 2010 at 3:25PM
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woodfloorpro

Don't worry too much about what you have already filled.
It's not that big of a deal.
To echo the others flat is the most important thing for you.

    Bookmark   June 21, 2010 at 6:40PM
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ozziepuppy

When I said level I think I actually meant flat, unfortunately. I have stopped filling in cracks now, however. My fingers are numb from pulling out those inch-long staples in the plywood in the kitchen -- must be 75 of them per board (I use a little nail puller tool and hammer and pliers and it takes forever). The store said it would be easy to remove the kitchen vinyl and underlayment but I do NOT think so. Each sheet is glued down AND stapled with all those horrendously long staples (and sometimes nails as well). I wish I had left the kitchen alone for now and I hope at some point the result will be worth all this effort and expense.

    Bookmark   June 21, 2010 at 10:33PM
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glennsfc

It is absolutely amazing to me that flooring professionals actually think (thought) that glueing underlayment actually makes (made) sense.

If the added height of what is left will be no problem, then you may want to leave it alone and flatten what's left. There are very good ways to do that, but you would need consultation and guidance.

Good luck.

    Bookmark   June 22, 2010 at 8:39AM
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ozziepuppy

I can't leave it partially ripped out as there is height difference and also HUGE splintered wood edges all over the place, unfortunately. (And for some strange reason my cat grabs hold of pieces of wood sticking out and tries to rip them off with his mouth--and occasionally succeeds!)

    Bookmark   June 26, 2010 at 4:06PM
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brickeyee

At some point you have to cut your loses and just replace the entire sub-floor.

    Bookmark   June 27, 2010 at 11:31AM
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