Smoothing concrete floor - how?

pam29011November 24, 2011

About 18m ago we had a perimeter drain installed in our house to deal with a wet basement. It works great.

But the guys who installed it did a half-arsed job in some places when it was time to put new cement down & make it level with the existing floor. In some places it's good, but in many places it isn't a smooth transition. There's 1/8" to 1/4" difference, with the new area being higher (and it's not tapered down to the existing slab).

Someday we want to put vinyl or linoleum on the floor down there (whichever is least likely to support mold/mildew). But I know we'll need to fix this discontinuity first.

Is it best to use some kind of textured hammer to knock down the edge of the high spots & smooth over with a self-leveling compound? Or ...?

I thought we might have to level the whole floor to the new patched areas But it's only the 12" of floor around the perimeter, it seems like a waste to raise the whole floor to the highest point, doesn't it? We're not going for a finished basement, just want something less dusty on the floor to make it easier to vacc down there. It's used to store tools & for exercise equipment & laundry. We don't need a bonus room or anything in the basement. So, perfection isn't the goal but I know if we just slapped vinyl on the floor as it is the shine of the vinyl would really highlight the lumps & bumps along the seam where new meets old floor.

Thanks in advance!

-Pam

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Vinyl directly on concrete is a poor choice as in most basements there is a constant pressure of water vapour that will lift the tiles or create mildew/mould problems. Ditto linoleum with a natural jute backing.

Concrete grinders can be rented that will smooth the concrete or even polish the whole thing like a jewel. Or you can just smooth it and cover in a latex concrete floor paint.

    Bookmark   November 24, 2011 at 12:06PM
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bus_driver

To get an idea of the price to smooth your floor, contact a terrazzo contractor. They can wet grind concrete very smooth with no dust.

    Bookmark   November 24, 2011 at 6:13PM
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pam29011

That never occurred to me - to see what a pro would charge to smooth out the edges (even the whole floor). Thanks! I thought vinyl was good for basements (or at least okay to use there) b/c of watching too many home improvement shows where they've put the vinyl "wood" strips on the floor, saying it was a better option than laminate flooring.

I think smoothing + epoxy paint will be a good solution.

Thanks!
-Pam

    Bookmark   November 25, 2011 at 8:42PM
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AAA333

Make sure they use water when grinding, cement contains silica and is not meant to be breathed in ( it never leaves your lungs) Have them shop vac the water as they grind it will be messy till they are done

    Bookmark   October 5, 2013 at 10:07PM
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I thought vinyl was good for basements (or at least okay to use there) b/c of watching too many home improvement shows where they've put the vinyl "wood" strips on the floor, saying it was a better option than laminate flooring.

I want to scream every time I see this hunk from Canuckistan finish a basement using fiberglass insulation and a vapour barrier.

Vinyl in a basement over a proper underlayment such as Delta FL is unaffected by moisture and resistant to mould.

This post was edited by worthy on Wed, Oct 9, 13 at 12:24

    Bookmark   October 9, 2013 at 12:21PM
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