Fixing cracked concrete

6 years ago

Hi, I removed the carpet and foam underlay in the living room for my ground level condo. On the concrete, I found a crack and am worried due to it's length.. The concern I have is that it runs from the wall (that connects to the unit beside ours), underneath the stairs and then into the closet under the stairs that contains the water tank. The crack itself is quite small in width; around 1/8" max. There is a small section in front of the stairs that has a very slight displacement; with a 1' level across it it still shows to be level.

Should I be bringing in a professional to be looking at it? Or is it possible for me to repair it myself? If so, what would be the best way to go about repairing it? I will later be adding laminate flooring (and underlay) on top.

Thanks.

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Comments (2)

millworkman
6 years ago
Doesn't look like anything to worry about in my opinion as realistically there is only two types of concrete, that which is cracked and which is yet to crack. If all your windows and door operate fine, there are no cracks in the drywall, don't sweat it.
SJ McCarthy
6 years ago
Since you are floating a floor over top (laminate with underpad) you will ignore this crack. It is there because the slab was poured without stress joints being added. Concrete cracks. It just does. Stress joints (added by humans) will CONTROL the cracking. If the humans do not add the joint then the concrete does it itself - as it wants; where it wants.

The crack you have is even and level. It is not crumbling and it is moving in a straight line (following a wall). This probably happened a long time ago. Which means it is stable and happy.

A floating floor can go over top of this (so long as you use a vapour barrier = standard operating procedure over concrete regardless of cracks/joints) withou a problem.

Proceed as normal. Ignore the crack.
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