Caulk/Grout around Pedestal Sink/Toilet Questions

ciacJanuary 2, 2010

Hi There:

When installing pedestal sink over tile floor, and that I am not bolting down the pedestal. I read somewhere that I should put some silicone caulk as adhesives between the pedestal base and sink, as well as between pedestal and floor.

The confusions are: some say caulking isn't necessary as I may leave it uncaulked for easier removal and cleaning in the future. Also I wonder how much good will a bead of caulk do to stabilize/join the sink to the pedestal--i.e. do I really need the caulk between sink and pedestal base? I assume caulking between the sink and the wall around the top surface is mandatory to prevent water seepage?

Finally, should I caulk between the pedestal to the floor where you cannot see from the outside, or should I caulk AROUND the pedestal base to the floor, like you would a tub/toilet?

I find silicone caulk very difficult to work with (if I screw up it will take solvents to remove, and that'll mess up walls, paints etc.), so if not necessary I would love to find alternatives or avoid all together. Grout is way easier to shape into a nice finish and to clean up. I wonder if the water-cleanup (acrylic/latex) grouts can substitute for the above mentioned applications just as well.

Many Thanks.


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I have removed antique pedestal sinks that appeared to have been joined with a lump of grout or plaster between the two sections. The pedestal would just sit on the floor, and be grouted-in. Nowadays, pedestals seem to be poorer in quality control, as there may be a slight deformation to the very bottom that prevents it sitting flat on the floor tile. I would see no harm in stabilizing the whole assembly with dollops of matching grout. Just make sure it isn't disturbed while curing, as you'll only have one shot at it.

    Bookmark   January 3, 2010 at 10:11AM
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