Concrete level too low - Sika epoxy Hi-Mod

[dmac1]

Had a couple pits poured to facilitate flush mount of a Bendpak XP-7S car lift. It involves 2 side by side 6" deep pits with a connecting groove on one end. The problem is one of my pits is too deep and its not very smooth and I need to raise it anywhere from 0" to 1/2" and get it level. Looking for advice on what material to use. The pit is about 2' wide by 9' long.

I was thinking a mortar mix but was asking at a local hardware type store and the guy suggested I use a blend of cement/sand mix with an epoxy. Via that, it would bond to the existing concrete. He suggested a Sika epoxy called Hi-Mod. He was thinking mix it up and trowel it smooth.

What do you guys suggest? Anybody ever use that stuff?

Thanks.

 

[BlindViper]

I would use a self leveling product.

 

[dmac1]

I am concerned about tbe strength of a self leveling product... especially as it gets feathered out. Will the stuff stay together when real thin and can it support the weight of not only the lift but a vehicle on the lift? Anyone know?

 

[shaun oriold1]

Why not try metal shims? or you dont want that. Get a crack filler that is pours out with the viscosity of water. Mark your level line around the pit, and keep pouring till you hit that line.

 

[joe49]

http://www.quikrete.com/productlines/FastSetNonShrinkGrout.asp Used non shrink grout all the time on jobs that held much heavier things.

 

[msgross]

Doesn't the lift have adjustments for this?

I second the vote for metal shims, Lots of weight on a thin product doesn't sound like the best solution...

 

[wssix99]

You can get specially formulated cement products for this, but I'd think that metal shims would do just as well and be a lot easier to work with.

http://www.ardexamericas.com/en-us/Products/engconrep/Pages/EngineeredConcreteRepairSystems.aspx

 

[dmac1]

Shims are the alternative to getting the floor level. Its tough to get the shims right when its in the bottom of a pit. Currently, I'm grinding the high spots, still will have some fill to do.

Thanks for the links.

wssix99...any particular ardex product that you think would do the trick and be strong?

 

[wssix99]

wssix99...any particular ardex product that you think would do the trick and be strong?

I'm not an expert on their products, but I'm sure you could call them up and get a recommendation and a listing of local suppliers.

We used one of their products to fill in the saw-cut control joints in my floor before epoxy and it was really fabulous stuff. (It was one of the products with a 0 shrink factor.)