If the board leans or has gaps in certain spots then you can see where the floor is uneven.
How to floor concrete.
Concrete joists with lips on either side about halfway up are placed on the floor.
The concrete was poured over the toilet collar flange and will be cut out later.
The citric acid will help open the top pores of the concrete so the epoxy adheres well.
Insulation is then put down underneath the screed or in some cases timber sheets.
Concrete blocks are then laid horizontally between the joists resting on the lips and level with the top of the joists.
Over time concrete floors can settle unevenly or become uneven due to cracking and moisture.
Hills and valleys that are more than 3 16 of an inch can cause problems for any flooring you plan to place on top of the concrete flooring.
Thinking about adding a concrete floor to your home.
Concrete floors can be susceptible to settling and cracking over time and this is a more frequent problem when an existing structural slab has adapted to a finished residential flooring surface such as when a basement or loft condo has been converted to living space.
Mix the concrete according to the directions with a mixing bit on a heavy duty drill image 1.
Pour the fresh concrete over the floor then go over it with a 1 4 gauge rake to bring it level image 2.
To test the evenness of a concrete floor lay a 10 foot long 2x4 board across the surface.
Then apply scrub and squeegee off the floor in the same manner as the degreaser.
Slip shims under the low end of the 2x4 rail until it s perfectly level then use a scribing tool to transfer the unevenness of the floor onto the rail.
To resurface an uneven concrete slab begin by laying a long straight 2x4 wooden rail across the concrete slab floor with one end positioned on the high point in the room.