Natural-Look Sealers for Granite & Polished Marble
Granite and polished natural stone are timeless choices for residential and commercial spaces. countertops, flooring, facades, and more, thanks to their durability, elegance, and low maintenance. However, despite their strength, these materials are porous and vulnerable to stains, moisture, and wear over time.
That’s where natural-look sealers come in. These advanced protective solutions penetrate the stone’s surface to provide long-term protection without altering its original colour or finish.
In this guide, we’ll explore:
- What natural-look sealers are and how they work
- Why sealing granite and polished marble is essential
- Key factors most blogs overlook
- How ProtectGuard® MG, a premium penetrating sealer, delivers superior protection
What Are Natural-Look Sealers?
Natural-look sealers (also called penetrating or impregnating sealers) protect stone surfaces by soaking into their microscopic pores, forming an internal invisible barrier against water, oil, dirt, and stains without changing the stone’s appearance.
Key Benefits:
- Preserves natural colour & finish (no glossy or matte alteration)
- Repels water, oil, and stains
- Reduces long-term maintenance costs
- Breathable formula prevents moisture entrapment
- UV-resistant to prevent discolouration
Why Seal Granite & Polished Marble?
Even highly polished stones absorb stain forming liquids through tiny pores, leading to:
- Stains from coffee, wine, oils, or acidic substances
- Mould & mildew growth from trapped moisture over long exposure
- Freeze-thaw damage in outdoor areas
- Chemical etching (especially on marble & limestone)
- UV fading (even indoors near windows)
According to the Natural Stone Institute, untreated granite can absorb up to 0.2% of its weight in liquid, which may sound small but is enough to cause visible staining or etching over time.
What Most Blogs Don’t Tell You
1. Polished Surfaces Need More Frequent Resealing
Polished marbles absorbs less sealer due to reduced porosity, meaning so may require resealing every 12–24 months for public areas (compared to 2–3 years for honed surfaces).
2. Breathability Prevents Long-Term Damage
Cheap sealers create a non-breathable film, trapping moisture and causing:
- Surface clouding
- Stone degradation
- Microbial growth
🔹 Solution: Use deep penetrating breathable sealers like ProtectGuard® MG that allow vapour escape while blocking contaminants.
- Not All Sealers Work on All Stones
- Marble sealers (marble contains calcium carbonate, which reacts poorly with some sealers).
- UV-resistant sealers are crucial in sunny climates (even indoors).
Market Insight: Demand for eco-friendly, UV-resistant sealers is rising, with the global stone care market growing at 6.5% CAGR.
Introducing ProtectGuard® MG: Advanced Protection for Polished Stone
ProtectGuard® MG is a next-generation sealer designed for low-porosity stones like polished granite and marble.
Key Features:
- Water, oil & stain repellent (resists fruit juice, ketchup, grease)
- Non-film forming (maintains natural look)
- UV & abrasion resistant
- Breathable formula (prevents moisture damage)
- Food-safe & eco-friendly (low VOC, NSF-certified)
Best Uses:
- Kitchen and table countertops (protect against spills & stains)
- Polished marble & Limestone floors (enhances gloss retention)
- Outdoor granite in cladding and landscaping area (resists rain, frost, and graffiti)
- High-end stone restoration (Makrana marble, Statuario, Italian marbles)
How to Apply ProtectGuard® MG
- Clean granite with Guard Remover® Eco Efflorescence & Cement (removes dirt & grease) or marble with Guard Cleaner Eco Soiled Floor.
- Ensure the surface is dry before sealing.
- Apply ProtectGuard® MG undiluted with a brush or sprayer (2 cross-coats, 30 mins apart).
- Buff after 24 hrs with a white pad for enhanced gloss.
- Covers 15–30 sqm per litre (cost-effective due to high active ingredients).
Final Thought
Choosing the right sealer ensures your granite and polished marble stay pristine for years. ProtectGuard® MG offers superior protection without altering aesthetics, making it the best choice for high-end and high-traffic surfaces. For long-lasting beauty & protection, trust ProtectGuard® MG.
