Floors not level

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Posted by: from London
2/17/2012 at 7:19:14 PM

Previous owners jacked up middle of house now one side is lower. How do I make a 5 degree droop even?

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Date/Time2/17/2012 at 9:03:31 PM

There is multiple ways to solve your situation. You can lower the center of the house back down. You can jack up the outside of the house to level it, that way. You can also use self leveing concrete on the floors.

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Hamish from Natural Solutions in Coquitlam
Date/Time2/17/2012 at 9:26:44 PM

Hi Leo, well, assuming we are talking about a cement slab floor, there are a variety of engineered cementiouse products that you can use for this purpose. Mapie is a good product, but there are a myriad of products to choose from.

Each manufacturer will have the instructions on the products, and how to install it.

These bags do tend to be expensive (@ $25.00 to $50.00 per bag) so you may want to shop around to get the right product for your application. Large areas will soak a lot of product, so get the average depth of product you will need and crunch the numbers!

Good luck with that, and keep in mind that Youtube is a phenomenal resource for this sort of information!

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Leo in London
Date/Time2/18/2012 at 12:09:40 AM

The subfloor is wooden and the house is 96 years old hard to find videos on wooden subfloors. Was informed it would cost 5000 to lower one side of house.

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Date/Time2/18/2012 at 8:55:02 AM

Hi Leo

I am currently working on a similar problem. Self leveling products were not applicable to this situation as it was a very large area and the finished floors had to be removed anyways. We removed the finished floor and subfloor to expose the floor joists underneath. We then used a laser level to acertain where the level floor should be brought up to. As the existing floor joists were in good condition, we tapered 2x to be attached to the floor joists to level off the joists. We then laminated plywood on each side of the the taper and existing joist for stability and attached new 3/4 plywood on top ready for new hardwood flooring. The floor is now level.

Hope this helps.


Kingsway Construction Inc

Glenn Rosborough

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