KEIM Mineral Coatings is a manufacturer of high-performance mineral silicate paints and coatings designed for exceptional durability, breathability, and color longevity.
Unlike traditional acrylic or latex paints, KEIM coatings chemically bond to mineral surfaces through a process called silicification. This creates an extremely long-lasting finish that doesn’t peel, blister, or trap moisture the way film-forming paints can.
For certain exterior and historic applications, KEIM coatings are considered among the most durable architectural finishes available.
What Makes KEIM Different from Traditional Paint?
Most conventional paints (including acrylic and latex) sit on the surface of a substrate and form a film. KEIM mineral coatings work differently. Instead of forming a surface film, they:
- Penetrate into mineral substrates
- Chemically bond with masonry
- Remain vapor permeable (breathable)
- Resist UV degradation
- Maintain color stability for decades
This makes them particularly well-suited for masonry, stucco, brick, and concrete.
What is Silicate Paint?
Silicate paint is a mineral-based coating that uses potassium silicate (water glass) as its binder. This binder reacts with mineral substrates to form a permanent bond. The result is:
- Extremely long service life
- Exceptional resistance to weathering
- Non-film-forming mineral finish
- Low environmental impact
Unlike acrylic paints, which can soften under extreme heat or degrade under heavy UV exposure, mineral silicate coatings are naturally UV stable.
Where are KEIM Coatings Commonly Used?
Because KEIM coatings are breathable, they are especially valuable in older masonry structures where trapped moisture can cause damage. KEIM is frequently specified for:
- Historic building restoration
- Churches and landmark structures
- Masonry façades
- Stucco homes
- Institutional buildings
- High-end architectural projects
Interior vs. Exterior Applications
While KEIM is widely known for exterior mineral coatings, they also offer interior mineral paint systems designed for:
- Low VOC environments
- Mold-resistant surfaces
- High-humidity areas
- Commercial and institutional settings
- Their mineral formulas are naturally resistant to mold and algae without relying heavily on added mildewcides.
Is KEIM Right for Every Project?
No — and that’s important. KEIM coatings are specifically designed for mineral substrates like:
- Brick
- Stucco
- Concrete
- Natural stone
They are not intended for standard drywall applications in typical residential repaint projects. Because of their specialized nature, proper surface evaluation and product selection are essential before application.
Why Professionals Choose KEIM
For projects where long-term durability and substrate health matter, mineral coatings can be a superior solution. Architects, preservationists, and specialty contractors often choose KEIM because:
- It provides unmatched longevity
- It maintains authentic mineral appearance
- It supports historic preservation standards
- It resists fading for decades
- It allows masonry to breathe
Final Thoughts
KEIM Mineral Coatings offers a fundamentally different approach to architectural finishes. Instead of simply covering a surface, these mineral coatings bond with it and create a durable, breathable finish designed to last.
For masonry, stucco, and historic projects, KEIM provides a level of performance that traditional acrylic coatings may not achieve.
If you’re evaluating a project that involves brick, stucco, or other mineral surfaces, selecting the right coating system is critical. Mineral silicate coatings are a specialized category — and proper guidance ensures the system performs as intended.
Frequently Asked Questions About KEIM Mineral Coatings
What is KEIM Mineral Coatings used for?
KEIM coatings are used for exterior and interior mineral surfaces, including masonry, stucco, brick, and concrete. They are especially popular in historic preservation and high-end architectural projects due to their durability and breathability.
Can KEIM be used on drywall?
No — KEIM mineral coatings are designed specifically for mineral substrates. Drywall or standard interior walls require traditional acrylic or latex paints.
How long does KEIM paint last?
When properly applied, KEIM mineral coatings can last decades, often 30–50 years, because they chemically bond with mineral surfaces rather than forming a surface film.
Is KEIM paint eco-friendly?
Yes — KEIM mineral coatings are low-VOC, environmentally friendly, and naturally mold- and algae-resistant, reducing the need for chemical additives.
Can you apply KEIM over existing paint?
KEIM performs best on clean, mineral surfaces. Applying it over existing paints is generally not recommended unless the surface is properly prepared and compatible. For previously painted masonry, a test patch and professional guidance are advised.
Do you need a professional to apply KEIM?
While technically DIY is possible for small projects, KEIM coatings are a specialized product. Most architects and contractors recommend professional application to ensure proper substrate preparation, adhesion, and long-term performance.