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Can I shave a hump in a concrete floor slab?

Postby D-Mac » Mon Jan 12, 2009 10:04 am


I've just laid a floor slab but have found that there is a large hump in one area that is about 20mm above the level that it should be. As I am laying insulation and screed over the top and the screed will have to match the level in an adjacent room, I need to remove the hump to ensure that I have a sufficient thickness to the screed.

Is there a mechanical way of removing this hump? (The concrete is only a couple of days old).
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Simply Build It

Postby stoneyboy » Mon Jan 12, 2009 10:59 pm

Hard way - club hammer and bolster
Easy way - floor grinder - it'll cost you.
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Postby D-Mac » Wed Jan 14, 2009 9:35 am

Thanks. I found the floor grinder on the HSS Hire website. You're not kidding about the cost - £70ish! But it has to be done. I can't think of any other way of sorting out this problem (I'm not going down the bolster route).
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Postby TheDoctor5 » Fri Jan 30, 2009 9:03 am

If you type the key words of your question into our search box to the left of the site you may find the answer is already posted or is in the DIY projects section of the website. Every post goes through a monitoring process and using the search box may speed up your answer.
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