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Old 01-15-2009, 01:23 PM   #1
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Tiling - Gap in plywood (sub)floor


I am in the process of remodeling a bathroom, and have taken it down to the studs and removed the old tile from the floor. The previous install had two layers of 1/2" plasterboard on each wall. Below the tile appears to be 1+" plywood. I will be installing new tile. They did the tile after the walls were in, so now there is a 1" gap where there is no plywood near the studs on the outside of the floor, and I would only like to put in one 1/2" sheet of drywall on the walls as the two layers seemed unnecessary. Once that is in, it will leave me with a 1/2" gap on the floor around the room that has no plywood.

I'm looking for suggestions to fix this. Is cement backerboard strong enough that if I put that over the plywood and the 1/2" gap, it will hold up? I know I could install strapping before drywall, but I'd prefer to get the extra 1/2" back into the room as it is pretty small already. I would also prefer to not go through the trouble of cutting 1/2" thick pieces of plywood to fill the gap. I also thought of just putting extra layers of backerboard in the gap.

Thoughts?

Thanks.

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Old 01-15-2009, 02:06 PM   #2
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Tiling - Gap in plywood (sub)floor


Why not fill with 1" strips of plywood before you drywall?

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Old 01-15-2009, 02:24 PM   #3
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Tiling - Gap in plywood (sub)floor


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Why not fill with 1" strips of plywood before you drywall?
Definitely an option, but I don't presently have the tools (circular saw) necessary. Just fishing for other ideas.
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Old 01-15-2009, 02:30 PM   #4
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Tiling - Gap in plywood (sub)floor


I understand. If I'm not mistaken, if you bought a sheet of plywood from the big box stores, don't they offer to cut it for you? I think I remember seeing the big panel sized cutting machines in there.
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Old 01-15-2009, 02:32 PM   #5
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Tiling - Gap in plywood (sub)floor


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I understand. If I'm not mistaken, if you bought a sheet of plywood from the big box stores, don't they offer to cut it for you? I think I remember seeing the big panel sized cutting machines in there.
You are probably right. I also have family/friends close by that I can borrow from. If this is the safest approach, I will probably just go ahead with it.

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Old 01-15-2009, 05:21 PM   #6
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Tiling - Gap in plywood (sub)floor


Most box stores will cut it for you and they even sell helf sheets of plywood if you don't need a full one. I would support that last 1/2" of cement board if it was me.

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