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What is the difference between sanded and un-sanded grout?

April 26, 2017grout sanded un-sanded

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What is the difference between sanded and un-sanded grout?

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4. An un-sanded grout is used in grout joints less than 1/8 wide, as sanded grout will not pack into joints 1/8 or less. Sanded grout has a fine sand aggregate that keeps the grout from shrinking in grout joints larger than 1/8. Most glass, metal and marble tiles will require an un-sanded grout to keep from scratching the finish.