Sloping Garage Floor

[onelochevy]

I have a 2 car attached garage that has a slope that begins right around the middle of the room and slopes down towards the garage door. I'd guess the total slope is around 3" or so at most. Is this something that can be fixed by just framing up the front of the floor by the door to the desired height and filling it up with floor leveler? Going to working on my project truck once the garage is fixed up and will be doing alot of frame and suspension work, so the truck will be on jackstands for a long time and I'd like as level of a floor as I can get.

Thanks.

 

[Wingnut65]

First, there must be a reason why the floor slopes 3". Usually, a 1" slope from front to back is adequate for drainage. This may have been for door clearance issues. With a 7' door, 3" would be noticeable, but on an 8' door, not as much.

Second, 3" of floor leveler would not be as strong as concrete. Quickrete's Self-Leveling Floor Resurfacer is only rated at 2000 psi, compared to standard concrete at 3000 psi. This means jacks and car stands would probably leave indentations on the leveler.

Also, leveler must be a minimum of 1/4" thick. Meaning that sloping the topping, either leveler or even concrete, from 3" down to 0" thick will result in the thin stuff flaking off.

If I'd be designing it, I'd show a sawcut at the point where you want to start the leveling. Chip and remove the existing concrete down for a 1" recess and then form and fill with standard 3,000 psi concrete. This will give a good thickness for bonding at the thinest edge.

Good luck with your project.

 

[AlphaGarage]

As mentioned there are good reasons for sloping. But if you need to build up a section of floor you can use an epoxy based product that will adhere well to the current concrete as well as be stronger than the current concrete.

Our product for that is TrowelEase, a 1 gallon kit with 50 pounds of sand will fill 16 ft2 to a depth of 1/4". Very durable.