Hi everyone,
I have a 5″ monolithic slab with 12″ thickened edges which was poured last fall. This spring, we built a 28’x32′ garage on the slab. After the building was completed, tragically blisters were found to exist on the slab and began to break open.
The concrete contractor has offered to jack up the building and pour a 4″ slab overlay (with rebar at my request). The slab overlay would not be bonded to the original slab. The original slab has no cracking or other flaws beyond the surface spalling and blisters. The slab overlay will cover the entire surface of the original slab including the thickened edges. The height of the building will therefore increase 4″ but will not affect my door openings.
What does everyone think of this plan? As the original slab is structurally sound, is the unbonded slab overlay ok? Any other input would be appreciated.
Thanks!
Replies
Seems like overkill to me. There are numerous ways to resurface or coat concrete. There are some really nice garage floor tiles. https://www.costco.com/MotoFloor-Modular-Garage-Flooring-Tiles-48-square-feet-per-Box-1'-x-1'-Tiles.product.100009181.html