Tile Grout

Choose cement-based grout for most indoor floors and walls, epoxy grout for high-moisture or heavy-traffic areas because it resists stains and chemicals, and urethane or polymer-modified grouts for flexibility on exterior or large-format tiles; match grout joint width recommendations from the tile manufacturer

Essential tools include a rubber grout float, grout sponge, bucket, grout saw or multi-tool for removal, margin trowel for mixing, and a grout sealer applicator; choose tool quality that fits project size and frequency of use

Calculate grout volume using tile dimensions, joint width, and joint depth, or use online grout calculators; for typical tiles, factor in waste and order slightly more than the calculated amount to allow for errors and touch-ups

Allow grout to cure per manufacturer instructions, then clean haze with a damp sponge and mild cleaner; seal cement-based grout after curing and reseal periodically based on traffic and exposure to moisture to prevent staining and mildew

Yes—epoxy grout offers the highest durability and stain resistance, cement grouts are more porous and need sealing to resist stains, and urethane/polymer grouts balance flexibility and moderate stain resistance without always requiring sealing

Match or contrast grout color to tile to achieve desired visual effect—neutral or matching grout makes surfaces appear more continuous, while contrasting grout highlights individual tiles; consider dirt visibility and maintenance when selecting lighter or textured finishes

For small repairs you can spot-replace or regrout after raking out deteriorated grout; for widespread failure it's best to remove old grout back to sound substrate before regrouting to ensure adhesion and a uniform finish