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gregga 07-14-2010 10:14 AM

outdoor tile grout problem
I have tile with grout on an outdoor balcony fully exposed to the elements. unfortunately, it looks like rain water is seeping through the grout, running out from underneath the tile, and staining the front of the balcony.

I've been reading alot about "sealers" but none of them seem to create a waterproof barrier. is there such a product out there?

thank you in advance.

HARRY 65 07-14-2010 01:08 PM

grout is no good for outside work if you can remove it , you can buy a grout remover , then get a small bag of cement to do your job ( it must be cement with no sand ) mix with water only to make a paste something like cream and put it in the joints . depending on the weather wash with a damp sponge , leave and repeat until the tiles are clean

gregga 07-14-2010 10:04 PM

that's what i was afraid of! thanks for the information.

poppameth 07-15-2010 05:59 AM

Disregard the above posting. You don't use cement to grout tile. Grout has portland cement in it anyway. If you want a better, less permeable gout, cut out what you have and use Spectralock or Opticolor instead. They are epoxy grouts. However you need to have a professional tile company come out and look at it to make sure that is your real problem. Tile on exterior projects, especially balconies can be tricky. It's more in how the substrates are done than the grout.

HARRY 65 07-15-2010 01:19 PM

@poppameth: i have been tiling for 20 years or more and i know how to do it :thumbsup: , cement is a material which when hard is the only long term sealer against rain etc :yes: , as long as it is not done on a very hot day to stop it from drying to quick . a grout of any sort outside will through time break up and need replaced :no: with damage by rain , snow and frost.

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