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A leaky toilet went unnoticed for what appears to be a rather substantial time. In its wake it has left both layers of sub flooring rotted and warped. The top of the two sub floors was removed rather easily due to the fact that when it was installed it was cut to fit and then laid in the perimeter of the bathroom. The bottom layer, however, extends under the existing walls. The question that I am posing is what is the best technique to cut the plywood sub floor as close to the walls as possible? A circular saw doesn’t get close enough due to the plate. Also, any suggestions on running short floor joists to pick up any edges of the new sub floor that don’t reach the existing joists are appreciated.
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Replies
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Recipricating saw to get close to the wall, and add blocking where needed for nailers.
*I had this same problem and a sawzall is what you need to cut it. It is a bit cumbersome when you run over the joists not to go too deep. In my case I had some joist warpage, so I actually added supports to the joists by gluing, nailing, and bolting 2x8 pressure treated beams to the sides of the warped joists in such a manner that the top edges of all were flat and level with respect to each other. I would then recommend you use a minimum of two layers of subfloor as opposed to one and run the grains in opposite directions of each other. So if you have a 1.5" total subfloor, use 2 3/4" layers of ply, or a layer of 1x with ply above it. For a batrhoom, you might consider marine grade. It also depends on what type of floor you will have. In my case, I tiled, so I had another layer of 1/4" durock on top of all that. The floor is solid as a rock now. Best of luck.
*Thanks for the info. It will be a tile floor so it looks like I will do two layers of 3/4 and a layer of durock or some such material.
*I'd use a single layer of 1 1/8 T&G Ply. This stuff is stiff as steel. I'd use a sawzall for angling into the wall, with as suggested, blocking between the joists to support the new subfloor. Glue and Nail the floor.
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A leaky toilet went unnoticed for what appears to be a rather substantial time. In its wake it has left both layers of sub flooring rotted and warped. The top of the two sub floors was removed rather easily due to the fact that when it was installed it was cut to fit and then laid in the perimeter of the bathroom. The bottom layer, however, extends under the existing walls. The question that I am posing is what is the best technique to cut the plywood sub floor as close to the walls as possible? A circular saw doesn't get close enough due to the plate. Also, any suggestions on running short floor joists to pick up any edges of the new sub floor that don't reach the existing joists are appreciated.