How to Concrete a Shower Slope

Install roofing felt paper and steel mesh over the floor. Staple to the floor with a heavy-duty stapler, and trim away the excess with a razor and a pair of metal cutting shears. Cut out a hole over the drain hole in the floor, and bolt the drain to the floor with the provided drain bolts and a wrench.

Make a batch of sand mix that you can form into balls with your hands, adding water to the sand mix until you reach this consistency. Trowel the sand mix over the floor so it covers the entire floor.

Spread the sand mix evenly across the floor with the edge of the trowel. Flatten the sand mix with the surface of the trowel, pressing it into a flat and smooth base that slopes toward the drain.

Use a carpenter's level to check the slope of the floor by setting the level on the floor and reading the bead. It should be a quarter off-center for a proper slope, but you can increase or decrease the slope if you desire. Continue to form the shower floor with the trowel until you have a similar reading on the level all the way around the drain. Let the floor dry for 24 hours.

Cover the floor with a shower liner, fold the corners back, and tack it to the shower walls with a hammer and nails. Cut out the drain hole with a razor. Connect the top half of the drain to the bottom part of the drain by placing the top half on the bottom half, inserting the bolts into the mounting holes, and tightening them with a wrench.

Spread more sand mix over the shower liner. Use the trowel to create another sloped floor that follows the slope of the layer beneath the liner. Let the top layer of the shower floor dry for 24 hours.