Flooring — FAQ
How often should homeowners reseal grout?
Reseal shower grout annually and floor grout every 2-3 years. High-traffic kitchen floors benefit from yearly application. Perform a water test—if droplets absorb instead of beading, it's time to reseal. Professional-grade sealers last 50% longer than hardware-store brands.
Can I apply sealer to old, stained grout?
Clean thoroughly first—sealer locks in stains. Use a grout cleaner and steam to remove embedded dirt. For deeply stained grout, consider colorant sealer or regrouting. Always let grout dry 48-72 hours before sealing to ensure proper penetration.
What's the difference between sanded and unsanded grout sealers?
Most sealers work on both types, but sanded grout's larger pores need more product. Apply extra coats to sanded grout until it stops absorbing. Unsanded grout common in 1/16-inch joints requires less sealer but more precision to avoid waste.
Do I need different sealers for indoor and outdoor tile?
Use a UV-stable sealer like Seal It Green Xtreme for outdoor applications. Indoor formulas may yellow and degrade in sunlight. For freeze-thaw climates, ensure the sealer allows vapor transmission to prevent freeze damage. Most premium penetrating sealers work for both.
Is spray or brush application better for DIYers?
Spray is faster but requires masking tile and excellent ventilation. Brush application gives beginners more control and wastes less product. For first-timers, brush-on sealers like AQUA-X reduce error risk. Practice on a small area before committing to the full project.
Wait 24 hours for full cure, though fast-dry formulas like AQUA-X allow light use after 2 hours. Avoid soaking the grout for 48 hours. Running a fan accelerates curing. Premature water exposure causes sealer failure and requires complete reapplication.
