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#1
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uneven basement floor -- how to fill in small depressions in concretesubfloor?
The folks who jackhammered up the perimeter of my basement floor to
put the sump pumps didn't do a great job of relaying the concrete floor, and it is uneven in spots. I've decided to use a Dremel to grind down the spots that are too high (there aren't many). But for the depressions, I hesitate to use self-leveling cement because a typical low spot is perhaps 2-4 inches in diameter and a quarter to a half inch deep; my guess is that I need to use a more liquid product that can be more carefully controlled. I've been looking at Henkel Corp P77913125 PL Polyurethane Self-Leveling Concrete Crack Sealant and 3M(TM) Concrete Repair 600 Gray Self-Leveling. Any thoughts on these or other products for this use? Many thanks. |
#2
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uneven basement floor -- how to fill in small depressions in concrete subfloor?
On Wed, 31 Dec 2008 03:51:10 -0800 (PST), Melissa
wrote: The folks who jackhammered up the perimeter of my basement floor to put the sump pumps didn't do a great job of relaying the concrete floor, and it is uneven in spots. I've decided to use a Dremel to grind down the spots that are too high (there aren't many). But for the depressions, I hesitate to use self-leveling cement because a typical low spot is perhaps 2-4 inches in diameter and a quarter to a half inch deep; my guess is that I need to use a more liquid product that can be more carefully controlled. I've been looking at Henkel Corp P77913125 PL Polyurethane Self-Leveling Concrete Crack Sealant and 3M(TM) Concrete Repair 600 Gray Self-Leveling. Any thoughts on these or other products for this use? Many thanks. I can't see using a dremel to grind down concrete. I know they make a few different machines, but ..... Why do you feel the need to fill in that small depression? Will it be left exposed or are you planning to cover it with some finish flooring? |
#3
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uneven basement floor -- how to fill in small depressions inconcrete subfloor?
More info: the floor is mostly covered with old tile (linoleum?)
except where they jackhammered up the perimeter. Where the perimeter was flat, I filled it in with vinyl stick on tile. However, there are a few spots that are too uneven for these tiles (12"x12") to sit evenly; they wont' stick, and they rock back and forth with a crunching sound. I'd like to have the floor even because the entire mess -- the old tile, stuck on with some tarry base that probably contains asbestos, and the new non-matching tile -- is both hideous and cold. I'm thinking carpet squares over the whole thing, since it is a sub-ground installation and might conceivably get wet. But where the floor is uneven, in a few spots, it is probably too uneven to just put carpet tile on top of it (much less laminate or ceramic tile or wood, all of which require an even subfloor). The ceiling is not terribly tall, or I would put a plywood subfloor down -- I could still conceivably do this. At present, the plan is to level out the concrete in the patches where it is not level, pop on the stick on vinyl tile so that it matches every other part of the floor and is even, and then carpet squares. The Dremel is because even concrete minigrinders have 4 1/2 inch wheels, probably too big for getting in between existing tiles to smooth down the few high spots. If it doesn't work, I'll try the minigrinder, but at present it seems like overkill. Of more concern are the dips. |
#4
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uneven basement floor -- how to fill in small depressions in concrete subfloor?
Melissa wrote:
Of more concern are the dips. Thinset. Make sure the old concrete is clean. -- dadiOH ____________________________ dadiOH's dandies v3.06... ....a help file of info about MP3s, recording from LP/cassette and tips & tricks on this and that. Get it at http://mysite.verizon.net/xico |
#5
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uneven basement floor -- how to fill in small depressions inconcrete subfloor?
Thanks. Thinset to level, let cure and then apply stick on tiles, I
assume? |
#6
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uneven basement floor -- how to fill in small depressions in concrete subfloor?
Melissa wrote:
Thanks. Thinset to level, let cure and then apply stick on tiles, I assume? Right -- dadiOH ____________________________ dadiOH's dandies v3.06... ....a help file of info about MP3s, recording from LP/cassette and tips & tricks on this and that. Get it at http://mysite.verizon.net/xico |
#7
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uneven basement floor -- how to fill in small depressions inconcrete subfloor?
On Dec 31, 5:51*am, Melissa wrote:
The folks who jackhammered up the perimeter of my basement floor to put the sump pumps didn't do a great job of relaying the concrete floor, and it is uneven in spots. *I've decided to use a Dremel to grind down the spots that are too high (there aren't many). *But for the depressions, I hesitate to use self-leveling cement because a typical low spot is perhaps 2-4 inches in diameter and a quarter to a half inch deep; my guess is that I need to use a more liquid product that can be more carefully controlled. *I've been looking at Henkel Corp P77913125 PL Polyurethane Self-Leveling Concrete Crack Sealant and 3M(TM) Concrete Repair 600 Gray Self-Leveling. *Any thoughts on these or other products for this use? Many thanks. Hammer and concrete chisel, then thinset. A dremel, that sounds like punishment. |
#8
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uneven basement floor -- how to fill in small depressions inconcrete subfloor?
On Dec 31 2008, 7:56*pm, Melissa wrote:
Thanks very much. *Don't worry, if the Dremel doesn't work I'll step up the assault. Melissa A sharp big chisel and heavy hammer is fast and no grinding dust, a flexible 20 grit sanding wheel on a grinder is an idea, a dremel is small, so is the motor and its work design |
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