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Cracking grout in patio tiles
I have an outdoor patio, about 15 x 50. It is covered with 16 x 16 ceramic
tiles. The grout lines are about 1/4" wide. The tile was installed 5 years ago. Three feet of the patio floor is in direct sunlight, most of the floor is in the shade of a roof overhang. During the last two years, the grout between some tiles is coming loose: Hairline cracks develop where the grout meets the tiles and, before long, sections of the grout crumble. There are no cracks in the tile. The deterioration of the grout is confined to the areas where the tile is exposed to the southern sun. When I repair the grout, I would like to match the color to the existing grout. This may be a case of thermal expansion. There are no expansion joints in the patio tile area. How can I repair the grout and how can I prevent the grout from crumbling again. Is there such a thing as flexible grout? Mix the new grout with epoxy? Thanks Walter -- www.rationality.net |
#2
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Cracking grout in patio tiles
walter wrote:
I have an outdoor patio, about 15 x 50. It is covered with 16 x 16 ceramic tiles. The grout lines are about 1/4" wide. The tile was installed 5 years ago. Three feet of the patio floor is in direct sunlight, most of the floor is in the shade of a roof overhang. During the last two years, the grout between some tiles is coming loose: Hairline cracks develop where the grout meets the tiles and, before long, sections of the grout crumble. There are no cracks in the tile. The deterioration of the grout is confined to the areas where the tile is exposed to the southern sun. When I repair the grout, I would like to match the color to the existing grout. This may be a case of thermal expansion. There are no expansion joints in the patio tile area. How can I repair the grout and how can I prevent the grout from crumbling again. Is there such a thing as flexible grout? Mix the new grout with epoxy? There are epoxy grouts, but the ones I've used don't like the sun, according to the manufacturer. There are grout additives that might help. It might be helpful to know exactly what the origional installer used. Real tile shops can be very helpful if you have one in your area. |
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