There have been many posts here about how to level uneven floors, or how to re-pitch them so we thought we would pass on some helpful info. Our www.prep-crete.com Division does hundreds of thousands of square feet per year of leveling, so we have quite a bit of experience with this.
The only way to pour a leveler and have it at the correct height is to 'pin' the floor with plastic height pins that get cut to the proper desired height, since when pouring a leveler, it's almost impossible to determine how much is needed where.
The plastic pins are trimmed using a laser and a measuring stick. For example say the left side of the garage is fine, but the right side is low and want it raised. You set a rotary laser in the corner and measure the left side with a stick and mark the laser line on the stick. Then move the stick around to the right side areas and the line will be lower than the laser line (since the right side is low) so the distance between the mark and the laser line is the exact amount you need to pour to get it level with the left side. You trim the pour pin to that exact distance between the line and laser line.
Various areas will require different heights so you simply trim the pins to the height you need in that exact spot, so that when the leveler is spread level with the pins the floor is fixed.
You place the pins every 25-50 sq ft and trim the top of the pin down do the desired height you want. Then just pour to the top of the pins, they get buried in the leveler. As long as you measured correctly the floor should be dead-on!
See photos of the pins, and a 'pinned' floor that was getting ready to pour the leveler.
The only way to pour a leveler and have it at the correct height is to 'pin' the floor with plastic height pins that get cut to the proper desired height, since when pouring a leveler, it's almost impossible to determine how much is needed where.
The plastic pins are trimmed using a laser and a measuring stick. For example say the left side of the garage is fine, but the right side is low and want it raised. You set a rotary laser in the corner and measure the left side with a stick and mark the laser line on the stick. Then move the stick around to the right side areas and the line will be lower than the laser line (since the right side is low) so the distance between the mark and the laser line is the exact amount you need to pour to get it level with the left side. You trim the pour pin to that exact distance between the line and laser line.
Various areas will require different heights so you simply trim the pins to the height you need in that exact spot, so that when the leveler is spread level with the pins the floor is fixed.
You place the pins every 25-50 sq ft and trim the top of the pin down do the desired height you want. Then just pour to the top of the pins, they get buried in the leveler. As long as you measured correctly the floor should be dead-on!
See photos of the pins, and a 'pinned' floor that was getting ready to pour the leveler.
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