Cleaning Granite Countertops: What Works and What to Avoid

Understanding Your Granite's Protective Seal

Granite is a natural stone with microscopic pores that can absorb liquids and stains. To prevent this, granite countertops are sealed with a protective impregnating sealer during installation. This sealer does not sit on the surface — it penetrates the stone and fills those pores from within, creating an invisible barrier.

Every time you use an acidic or abrasive cleaner, you degrade this seal. Once the seal is compromised, the granite becomes vulnerable to staining, etching, and bacterial absorption. In North Houston kitchens where countertops see heavy daily use, maintaining the seal is essential.

To test your seal: drop a few tablespoons of water on the surface and wait 15 minutes. If the water beads up, your seal is intact. If it absorbs and darkens the stone, it is time to reseal.

The Correct Way to Clean Granite Daily

1. Wipe the surface with a soft cloth or sponge dampened with warm water
2. Add a small amount of mild dish soap if needed for food residue
3. Rinse the cloth and wipe again to remove any soap film
4. Dry the surface with a clean microfiber cloth to prevent water spots

That is genuinely all you need for daily cleaning. Granite is durable — it does not require specialized products for routine maintenance. The simpler your approach, the longer your seal and finish last.

Products That Damage Granite

These common cleaners should never be used on granite countertops:

• Vinegar, lemon juice, or any acidic cleaner — acids etch the surface and dissolve the seal
• Bleach or ammonia — both degrade the sealant and can discolor the stone
• Generic all-purpose cleaners like Lysol or 409 — most contain acids or harsh chemicals
• Abrasive scrubbing pads or powders like Comet — they scratch polished surfaces
• Hydrogen peroxide on dark granite — it can lighten the color

Removing Stains from Granite

Oil-Based Stains (Cooking Oil, Grease)

Make a poultice by mixing baking soda with water to form a thick paste. Spread it over the stain about a quarter-inch thick, cover with plastic wrap, and tape the edges. Leave for 24 to 48 hours. The baking soda draws the oil out of the stone. Remove, rinse, and repeat if necessary.

Organic Stains (Wine, Coffee, Juice)

Use the same poultice method but substitute hydrogen peroxide for water when mixing with baking soda. This works best on light-colored granite. For dark granite, use acetone instead to avoid lightening.

When to Reseal and When to Call a Pro

Most granite countertops need resealing every one to two years, depending on use and the quality of the original seal. Apply a penetrating granite sealer following the manufacturer's instructions — typically spray on, wait 15 minutes, then buff off the excess.

If your granite has deep stains, etching from acid damage, or visible wear, a professional stone restoration service may be necessary. Our deep cleaning teams are equipped to assess granite condition and recommend the appropriate treatment.