How To Add Wall To Existing Room Concrete Slab

Then fill the holes in the slab with hydraulic cement.

How to add wall to existing room concrete slab.

Then design a bathroom layout that will function properly with the existing plumbing plan or with limited modification. Remove the curb and clean the slab thoroughly with a wire brush. Apply the new concrete over the primer. The framing currently sits on an untreated 2x4 wooden sill plate.

If this is the case drill through the curb and into the slab with a roto hammer every few feet. First ensure the existing wall to which the new one will attach at a 90 degree angle has a stud immediately behind the new wall location. Make sure you have enough concrete to fill the entire area to the depth you desire. Pour concrete onto the existing slab until it is around where you want the final level to be.

Sketch the new design in place if possible fine tune the design and then finalize the plan. In order to add a bathroom to a house on a concrete slab you will need to locate the existing water supply and waste lines. Your local building code may call for the wall to be anchored to the slab with threaded rods. I currently have a garage built upon an existing concrete slab i believe a plain 4 slab no foundation wall at the edges.

Next check for joists running above the new wall. This prevents water from leaking under the bottom of the wall to the inside of the building. Step 1 stretch a tape measure across the concrete slab and mark the position of the wall s ends. Exterior wall on slab must be out on the edge an exterior wall must be placed on the outside edge of the slab so the exterior siding laps down and over the edge of the slab.