I have two issues related to this subject:

1. We have a stainless steel tub that is set into stone steps. The seam is caulked with Ceramaseal Tub and Tile Caulk. The contractor explained that he used this caulk specially because it can be tinted to match the stonework. The area gets wet daily from shower splash (the shower being an open step-in area next to the tub. As a result the caulk in this area gets discolored and deteriorates. I have to believe there must be a better caulk for this situation: i.e. one that is mildew-resistant and damp resistant. Any suggestions? Bonus points if it can also be tinted!

2. It appears that the contractor used the same caulk to fill the thin (@1/16") joints between the stonework pieces on the adjoining shower floor and this caulk too is coming out, particularly when the shower isn't used for awhile and dries out thoroughly. Is caulk really appropriate for this use? If so, is there a caulk that is more suitable? If not, what is the appropriate treatment.

Your stone steps needs to be filled in with grout ( which you do have vairous colors to choose from) then a grout sealer is to be applied after the grout cures (sets ) (usually within 24 hours. After you seal the grout you shouold be good to go for a least a few years. As far as caulking, there is a mold resistant caulk for kitchens and bathroom you can use ( not recommended for tile joints )it is designed specially for kitchens and baths and it says it on the tube. It is a silicone type manner and is used to touch up the toilet base, the counter top adjoinging the wall etc. again not recommended for tile joints. Grout is for tile joints and then seal the grout. :) OK hey hope this helps.

The joint between the tub and stone must be caulked as it's a location where movement will occur. For areas that will regularly be exposed to water that may sit there a while, silicone should be used. Two tile setting materials companies, Laticrete and Tec Specialty both make a large color pallet of colored 100% silicone caulks to match most of their grout colors. Use their find a dealer links to locate a tile store near you that will have it or can order it. Lowe's stocks Laticrete products but not "Latisil" caulk. Don't even try to order it from them.

LATICRETE® International > Home (http://www.laticrete.com)
www.tecspecialty.com

This same caulk should also be used in the shower where walls meet each other and where walls meet the floor.


The stone on your floor should have been grouted, not caulked. Is this "caulk" that is coming out pliable when it somes out or is it brittle? If you can reach the contractor, ask him specifically which product he used for setting the stone on the floor and what he used for grout.