Flooring — FAQ
How often should I seal kitchen grout?
High-traffic kitchen floors need resealing every 2-3 years. Countertops and backsplashes require sealing every 3-5 years. Perform annual water droplet tests—if water absorbs instead of beading, reseal immediately to prevent permanent stains.
What's the difference between sanded and unsanded grout sealer?
The sealer formula remains identical. Sanded grout has larger pores requiring more product per square foot. Apply two thin coats on sanded joints versus one on unsanded. Always check sealer compatibility with your grout type on an inconspicuous area first.
Can I apply new sealer over old sealer?
Only if using the same chemical base. Solvent over solvent works; water-based over water-based works. Mixing types causes bonding failure and white hazing. Strip old topical sealers completely before applying penetrating formulas for best results.
How long before I can use my kitchen after sealing?
Wait 4-6 hours for light foot traffic on floors. Avoid water contact for 24 hours. Full stain protection develops after 72 hours. Keep pets and food prep away during cure time. Ventilate continuously to dissipate solvent odors faster.
What's the best application tool for kitchen backsplash grout?
Use a small foam brush or the FILA spray nozzle for vertical surfaces. Foam brushes control drips better than bristle brushes. Spray applicators cover large areas fastest but require thorough masking of adjacent tiles and countertops.
How do I know if my grout needs resealing?
Place water droplets on grout lines. If water darkens the grout or absorbs within 5 minutes, the sealer has failed. Also check for persistent staining after cleaning. Kitchens with heavy cooking or acidic food spills need more frequent resealing.
