Please help me find a 1.5 inch garage floor leveling solution?

Question

We added onto our garage. First the new additional slab was poured, then the new walls and roof built and then the existing outside wall removed. However, as you have guessed the new floor is not perfectly even with the old floor. The height differences vary but the max is 1.5 inches in height difference. I am trying to figure out how to make the whole floor even.

The old section is approximately 8' by 16'. I have concrete curbs on the perimeter of the old and the new garage so I know I can pour a 1.5” layer of something.

I have considered chipping the height difference off of the old section and then using an epoxy coat to fill divots and even out the floor. The epoxy would be thick in some spots. How thick can it be and still hold-up? Would the cost of the epoxy be too high compared to an alternative/better solution?

Answer 1

do you have room to put sleeper studs on the floor? sleepers are 2x4's cut to the angle you want from low to high and cover with ply wood

Answer 2

The real problem is that 1.5 inches is not a lot or thickness for a good product to be strong enough for a garage floor with automobile loading on it. I could tell you several things you should have done, but the best bet to fix what you have would be to sawcut out a strip of concrete between the old and new floor and repour that section, sloping the floor to match both elevations. A wider section removed will make the slope less noticeable. Also, be sure to drill in some rebar on 12-16 inch centers on both sides of the removed concrete to tie the slabs back together and prevent any differential settlement.

Answer 3

There is a self-leveling compound you can buy at your home renovation store, sorry it's name escapes me, but it's really simple to use.

Answer 4

Wow,that's a big booboo.

What I have found is a repair is always a repair.There is a floor leveler by Ardex that I have used.Problem is levelers don't really stand up,but Ardex is top shelf stuff.

My thoughts would be more in line with tearout/replace.Here in my area I charge $6.50 sq ft for this on larger jobs,more on smaller.

Your only talking 128 sq ft here.I would say call a concrete contractor and see what they would charge.They are usually happy to give free estimates.

Just some insight