A stone shower pan is a very attractive looking element to a modern, luxury bathroom. This type of shower pan can last for many years without any problems. However, after years of use, the sealant on the stone itself can become faded and lose its luster. In some instances, the sealant can be worn away so that the water can penetrate the stone itself. Refinishing the stone is much easier than replacing them as well as being more environmentally friendly.
Step 1 - Clean Old Stone Shower Pan
Before you start to get to work on the shower pan, you should clean off any dirt and soap build-up that is on the floor. Use some warm water with a strong detergent to clean the area. Make sure it is rinsed thoroughly and that it is dry before doing any other work to the shower pan.
Step 2 - Sand Old Sealer Off of Stone
A small orbital sander is great for this type of project. It is easier to work with and control in the small area of a shower pan. Use some 80 grit sandpaper to remove the sealer from the stone surface. Change to a 160 grit paper after to smooth out the stone.
Step 3 - Clean off Surface of Stone
Once all of the sanding is completed there will be a lot of dust in the area, on the shower panels, and on the surface of the stone. It is important to remove all of this dust before refinishing the old stone on the shower pan. Use a vacuum to get rid of a lot of the dust, then use a damp sponge to wipe down all of the surfaces.
Step 4 - Remove Grout
For a much better look when the project is finished you will want to have clean, bright grout in between the stone. To do this you will need to remove the old grout first. Use a chisel and chip away at the grout without damaging the corners of the stone. Remove all of the grout and vacuum up any small pieces.
Step 5 - Fill Any Cracks in Stone
If the sealer has been worked away at for some time, there may be some cracks in the old stone. These can be easily filled in with some epoxy filler. Mix the epoxy according to directions and spread out with a small putty knife. Let the epoxy dry for about 40 minutes before doing any other work.
Step 6 - Apply New Grout
Mix up some fresh grout according to the directions on the package. Using a small grout float, apply the grout to all of the seams between the stones. Wipe away the excess from the surface of the stone and let the grout set up for 24 hours.
Step 7 - Seal Old Stone Shower Pan
Start in the furthest corner of the shower pan and begin applying the sealer. Brush it on in an even coating. Make sure that there are no high spots in the sealant.
Step 8 - Add Second Coat
Once the sealant has drie, to a "tacky" feel you can apply a second coat. For the most part, this will be the last coat. If you feel that you need another, wait until it sets up before adding another one.