How to Deep Clean Granite Countertops: A Step-by-Step Guide
Granite countertops are known for their beauty and durability, but over time, even the most resilient surfaces need a deeper clean. Whether you're prepping for guests, removing stubborn buildup, or simply want your stone to shine like new, this guide will walk you through how to safely and effectively deep clean your granite countertops.
Why Deep Cleaning Matters
Granite is a natural stone with tiny pores that can absorb spills and harbor bacteria if not cleaned properly. While daily wipe-downs are helpful, a monthly or seasonal deep clean helps:
Remove grime and buildup
Revive the stone's natural shine
Extend the life of your sealer
Maintain a hygienic food prep surface
What You'll Need
Before starting, gather these safe-for-stone supplies:
pH-neutral stone cleaner or mild dish soap
Warm water
Soft microfiber cloths
Plastic or silicone scraper
Rubbing alcohol (optional)
Baking soda (for stains)
Granite sealer (if resealing)
Avoid using vinegar, bleach, ammonia, or abrasive scrubbers—these can dull or etch the surface.
Step-by-Step: How to Deep Clean Your Granite Countertops
Step 1: Remove Surface Debris
Clear the countertop and wipe away crumbs or dust using a dry microfiber cloth.
Step 2: Wash with Warm, Soapy Water
Mix a small amount of dish soap with warm water. Use a soft cloth to wipe the entire surface. This removes everyday grease and grime.
Step 3: Scrape Away Sticky Residue
Use a plastic or silicone scraper to gently remove any stuck-on food or dried spills.
Step 4: Disinfect (Optional)
Mix 1 part rubbing alcohol with 3 parts water in a spray bottle. Lightly mist the surface, let sit for 3–5 minutes, then wipe clean.
Step 5: Remove Stains with Baking Soda Paste
For oil-based stains, mix baking soda with water. For water-based stains, mix with hydrogen peroxide. Apply the paste, cover with plastic wrap, and let sit overnight before wiping away.
Step 6: Rinse & Dry
Wipe down the countertop with clean water, then dry with a fresh microfiber cloth to avoid streaks.
Step 7: Apply Granite Sealer (If Needed)
If water no longer beads on the surface, it's time to reseal. Follow your sealer’s instructions and allow it to cure fully before using the countertop.
Pro Tips for Ongoing Maintenance
Use coasters under drinks and trivets under hot pans
Clean spills immediately to avoid staining
Reapply sealer every 1–2 years, depending on usage
Use only granite-safe cleaners for daily maintenance
Keep Your Granite Looking Its Best
Granite countertops are an investment worth protecting. With the right deep-cleaning routine, you can maintain their shine, prevent damage, and keep your kitchen or bathroom looking polished and welcoming.
