mortar mix

How thick is too thick for a mortar bed under a corner tub. We have about 4 inches to the base of the tub and 2 inches to the bottom of the metal supports. The manufacture requires a mortar bed. And I understand the ticker the mortar bed the more shrinkage of the mortar. I feel 4 inches is a...

I am setting an alcove tub (60x32) in a bed of mortar but I want to know the specific technique I should apply. My tub has 4 supporting feet but the manufacturer specifies that mortar is also needed. During my reading on this site, I read that Terry suggested to put piles of mortar down to...

hi all, just laid my premade shower pan into a bed of rapid set mortar mix. how long before i can walk on the shower pan to install my cement board? here is the product.

Additional plumbing (all cast iron) was installed in above grade concrete slab. The trench is about 5" deep and 12"x14" (see pic). The slab itself is about 8" thick reinforced concrete. Can I just re-pour concrete over it or should we backfill the space around the pipes with something first...