What Actually Damages Granite
Granite earns its reputation as one of the toughest natural stones on the market, and that reputation is deserved when it comes to acids. Where marble etches and dulls on contact with citrus or wine, granite's crystalline structure shrugs those same spills off. The real threats to granite are different. Oil-based liquids such as olive oil, butter, cooking grease, sunscreen, and hand lotion can work into the stone's natural pores and leave a dark, stubborn stain that no amount of scrubbing fully lifts. On lighter and more porous granite colors, mineral deposits from hard water can build into visible spotting around sinks and faucets. Underneath all of it, the topical sealer that came with your countertop is degrading with every wipe-down, every cleaning product, and every hot pan set on the surface, thinning until the stone's natural porosity is exposed again.
How a Nanocoating May Change the Maintenance Equation
Traditional granite sealers are topical products that can wear and may need reapplication. RAKU is designed as a nanocoating that bonds with the stone rather than simply sitting on top of it. Service interval and performance depend on the material, preparation, use, and care; follow current professional guidance and do not assume a fixed warranty or maintenance-free result.
Where This Applies
Granite countertop protection matters where oil, heat, and hard water meet stone. Kitchen countertops, islands, outdoor kitchens, and bar tops all benefit from appropriate precautions such as trivets, prompt cleanup, and suitable cleaners. RAKU may add surface resistance, but confirm heat, cleaning, food-contact suitability, curing, and maintenance guidance with a trained professional.
If you're relying on an older sealer, ask a stone-care professional whether your granite needs assessment or reapplication. RAKU may be an option for added surface resistance; request an estimate and current care guidance for your countertops, islands, or bar tops.