I have been having an addition put on my house in Northern NH. Kitchen consisted of a 8′ x 20′ bump out against an existing slab of concrete. The adjoining concrete slab for the new addition was poured and lines up nicely to the existing slab except where the slabs are joined. There is a difference of no more than 1/2 inch deviation between the joining of the 2 slabs (a new slab and an existing one). My GC suggested self leveling concrete but I am wondering if a concrete patch would be better. The “dip” between slabs is roughly 1/2 inch and runs alomost the entire length of the seam between the 2 slabs. The difference is noticable for about 6-12 inches of width along the seam until the slab surfaces line back up.
If you lay a 6′ level across the slabs it is level except for the 1/2″ dip about 6-12 inches wide under the level.
I am leary of SLC becasue feathering it out to the level edge would leave barely any thickness of concrete and could crack.? I would think a concret patch troweled and screeded level would be a better option . I plan to put tile over some sections and enginneering flooring over the remainder. I would appreciate any suggestions.
This is something I will be doing myself. I have laid tile and flooring before and want to prep the slab level as best I can before proceeding.
Thanks for any info you can provide. I did try surfing thru other posts but could not find this particular issue addressed.
McMick