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I laid porcelain tiles on my patio a couple months ago. Life and weather has kept me from grouting the tile.

  • Is a couple months between laying the tile and grouting too long? What problems are likely to result?

  • How long after a rain should I wait for the tile to dry out before grouting?

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Shouldn't be a problem. Clean out the gap between tiles with a garden hose (or pressure washer if you have stubborn "dirt" like bird poop), then blow out with a air gun and compressor. You only have to wait til it's dry after a rain (or washing out) before commencing to grout.

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Do it before winter - otherwise water trapped in between the cracks will freeze and destroy your porch. – The Evil Greebo Oct 10 '11 at 18:27

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