MB-24 Barrier
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Made in the USA
Safe for Natural Stone
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MB-24 Barrier Impregnating Stone Sealer
MB-24 Barrier is the ultimate water-based penetrating stone sealer designed for optimal protection of your natural stone surfaces. Ideal for porous materials such as granite, concrete, terrazzo, terra cotta, saltillo, slate, and grout, this advanced formula creates a barrier against water, oils, and stains while preserving the natural beauty of your surfaces. Safe for use on food preparation areas, MB-24 Barrier ensures durability and hygiene in every application.
Key Features
- Safe for Food-Prep Areas: Protect your countertops with confidence. MB-24 Barrier is safe to use on surfaces where food is prepared.
- Deep Penetration: Provides long-lasting protection by deeply sealing porous surfaces, preventing stains and dulling effects.
- No Phosphates or Ammonia: Free from harmful chemicals, this formula ensures a healthier home environment.
- Long-Lasting Protection: Protects stone surfaces for up to 3–5 years when properly applied and maintained. This depends on the stone’s porosity, wear and tear, etc.
- Versatile Compatibility: Effective on natural stones like granite, marble, limestone, travertine, onyx, and slate, as well as concrete and manufactured stone.
- Made in the USA: Proudly manufactured to the highest quality standards.
- Hydrophobic & Oleophobic: Repels both water- and oil-based stains for easier cleanup and maintenance.
Product Specifications
| Feature | Details |
| Size Options | Quart, Gallon |
| Coverage | 150–250 sq. ft. per quart |
| Cure Time | 24–36 hours for maximum protection |
| Protection Duration | 3–5 years |
| Formulation | Water-based, VOC-free, food-safe |
Application Instructions
- Ensure the surface is clean, dry, and free of waxes, coatings, or previous sealers.
- Liberally apply MB-24 Barrier using a lambswool applicator, brush, or low-pressure sprayer.
- Allow the sealer to penetrate for up to 30 minutes, moving the product to prevent drying on the surface.
- Remove excess sealer with a dry cloth or towel.
- For high-porosity surfaces, repeat the application until the sealer remains wet for 15 minutes.
- Allow 24–36 hours for curing before exposing the surface to moisture or use.
Coverage
- Quart Size: 150–250 sq. ft. depending on surface porosity.
- Gallon Size: Ideal for larger projects or professional use.
Why Choose MB-24 Barrier?
- Unmatched Durability: Ensures long-term protection for your cherished surfaces.
- Professional-Grade: Trusted by stone care experts and contractors worldwide.
- Easy Maintenance: Simplifies cleaning with hydrophobic and oleophobic properties.
- Enhanced Aesthetics: Maintains the natural elegance of your stone while adding an invisible layer of protection.
Trusted by Professionals
MB-24 Barrier is a top choice for contractors, tile installers, and homeowners who demand excellence. Its proven performance and ease of use have made it an industry favorite for sealing and protecting natural stone surfaces.
Note
- All stone surfaces are different, maximum stain protection is after the sealer has fully cured. This takes 24 to 36 hours.
- When properly applied and cared for, MB-24 Barrier will protect for 3 to 5 years.
- Coverage: 150 sq ft to 250 sq ft per quart.
Preparation:
- Read the safety data sheet completely before use (found on the More Information tab above).
- Make sure the surface is dry and free from soils, waxes, sealers, and/or coatings.
Directions:
- Liberally apply an even coat on the surface being treated using a lambswool applicator or brush.
- Allow the sealer to soak into the stone’s surface for up to 30 minutes while moving the sealer around to avoid drying on the surface during dwell time. Stone surfaces will have different rates of porosity. If the sealer absorbs into the surface in under 10 minutes, multiple applications will be needed. Repeat the process until the sealer stays wet on the surface for more than 15 minutes.Â
- DO NOT ALLOW EXCESS SEALER TO DRY ON THE SURFACE. After the sealer has remained wet on the surface for approximately 20 minutes, you must remove all sealer and residue from the surface with a dry cloth or towel.
- Should any residue be left or dried on the surface, you may be able to remove it by applying a light coat of sealer to the affected area and buff it off using a clean cloth.Â
- We recommend that you complete the first application of the entire surface in manageable sections, so the sealer does not dry on the surface. For countertops, we recommend working 7 to 8 linear-foot sections. For floors, 50 to 100 square foot sections.
- Complete one section and then overlap the following section using steps 3-5 until the entire surface has been sealed. At this point, all excess sealer and residue should have been removed from the first application. Perform a second application, if needed.Â
Frequently Asked Questions
What is a stone sealer, and what is it used for?
Do I really need to seal my natural stone surfaces?
What steps must I follow before applying a stone sealer to natural stone?
Which natural stone surfaces is this product suitable for?
Can I use it on food contact surfaces?
How long will it protect stone surfaces, and how often will I need to reapply it?
What happens if excess sealer dries on my stone surface?
Where can I learn more about this product?
What safety precautions do I need to take when using this sealer on my solid stone surfaces?