Need help setting shower drain in existing slab drain hole!
I'm planning on installing a DIY-concrete shower base in small master 3/4 bath, it will most likely be 32x32 or 34x34 depending on the boss's final say (wife) and due to size constraints.
House is on slab and there is an existing 1-3/4"ID cast iron drain pipe that is 4-3/4" below slab top and 16 1/2" to center from either wall.
My concern is the 8"x8" hole in the slab around the drain pipe, it is squared underneath the broken 1" thick 6 1/2"x7" slab "top" (have pics will try to post when I get home).
I'm not sure what to do to fill the void so that the new concrete base and drain i'm going to install will not crumble and collapse down into the void, or do I even need to fill the void?
Will the 1" preslope at drain and 1-1/4" base at drain I'm planning be strong enough to support everyday shower use? Base will be stained and sealed not tiled and walls will be tiled over 1/2" CBU.
Previously had a metal shower stall in this spot and we dont want to put a prefab pan in unless we have to, we want to install something that will last and I enjoy the feeling of pride and self worth that comes from making something with my own hands. Not sure if this the right spot to post this or if it should be in another forum but, any help would be greatly appreciated.
Last edited by deedeedeeIY; 05-10-2012 at 03:45 PM.
Reason: change title to reflect needing help not giving help!