The grout you need depends on your tile size, joint width, joint depth, and total square footage. Smaller tiles and wider joints use more grout. The fastest way to get an accurate amount is to run the numbers through a grout coverage calculator before you buy.

What drives grout coverage Tile size: smaller tiles create more joints per square foot, so they use more

Polymer-modified grout is cement grout with polymers added to boost strength, flexibility, and water resistance. Compared with standard grout, it bonds better, resists cracking and shrinking, and holds up to moisture, which makes it a strong all-around choice for both residential and commercial tile.

How the polymers help

The polymers act as a binder throughout the joint. That gives the cured grout more tensile

Cement grout is affordable, easy to work with, and great for most residential tile. Epoxy grout costs more and is harder to install, but it is stain-resistant, waterproof, and extremely durable, which makes it the better choice for pools, commercial kitchens, and heavy-use wet areas.

Side-by-side comparison Cement groutEpoxy grout CostLowerHigher Install difficultyEasierHarder, works fast Stain resistanceNeeds sealingExcellent, no sealer Water/chemical resistanceGood when sealedExcellent

Yes. You can change grout color without tearing out the old grout by using a grout stain, also called a grout colorant. It bonds to clean, cured cement grout to refresh or completely change the color, and it seals the joint at the same time for a uniform, long-lasting finish.

How grout staining works

A grout colorant is a pigmented coating made to bond

To fix cracked or missing grout, rake out the failed grout, clean the joint, and refill with fresh grout that matches the original type and color. Cracking usually points to movement or a joint that was mixed too dry, so choosing the right grout for the joint width and location prevents it from happening again.

Why grout cracks or falls out Movement in the