Houzz Logo Print

Refill Slab repair with Mortar instead of concrete? Need answer!!

14 years ago

The drain and P-trap needed to be moved for my new tub requiring going below the slab. After replumbing the network, the plumber intends to refill the excavation with sand and reclose the space with Mortar rather than Concrete. I thought if concrete was there before, then concrete should go back in.

Someone said that because the hole is in the interior, the strength of the slab is not particularly compromised; that adding concrete would not make the repair any stronger than mortar. Also that mortar has more 'give' when it refills the hole. Any thoughts?... as quickly as possible, please.

Comments (9)