Many people associate tiles with floor and wall surfaces in bathrooms and kitchen, but exterior tiles, such as those on patios and decks, must also be sealed with grout. Grout fills in tile joints, protecting the tiles and the surface below from moisture damage and excessive dirt and grime. However, with constant exposure to weathering effects, grout used outdoors must include an extra additive to help it withstand the elements.
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Things you need
- Sanded grout
- Bucket or wheelbarrow
- Stirrer or mixer
- Latex additive
- Grout float
Pour sanded grout into a bucket or wheelbarrow. Use sanded grout for exterior surfaces; unsanded grout is not as sturdy.
Add the recommended amount of water per specific product instructions, and stir or mix thoroughly. You must follow product instructions for all additives, as different products require different ratios.
Mix in latex grout additive per product instructions. The latex will increase the density of the grout, extending its longevity.
Spread the grout across the tile surface with a grout float. Hold the float at a 45-degree angle to force the grout into the joints.
Wipe excess grout off of the tile faces with a damp sponge. Add grout to joints as necessary so they are completely full.
Cover the grouted tile with a protective tarp to keep moisture away until the grout has time to cure fully. Follow specific product instructions regarding this drying time.
Tips and warnings
- Find additives necessary for exterior grout at hardware and home improvement stores.
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