Description
POLASEAL M-A
Deep-Penetrating Siloxane Water Repellent for Long-Term Masonry Protection
POLASEAL M-A is a high-performance, single-component siloxane-based waterproofing treatment designed for use on brick, stucco, block, concrete, stone, clay tile, slate, and exposed aggregate surfaces. Engineered to penetrate deeply into the substrate, it cures rapidly to lock into the pore structure, forming a long-lasting, invisible barrier against moisture and environmental exposure.
Once absorbed and cured, POLASEAL M-A provides durable water repellency without forming a surface film or altering the natural appearance of the substrate. It protects against weathering, de-icing salts, UV exposure, and industrial pollutants while allowing the surface to remain breathable.
Ideal for architectural, commercial, and infrastructure applications, POLASEAL M-A helps extend the service life of masonry surfaces while maintaining their original aesthetic characteristics.
Key Benefits
- Invisible Water Repellent Protection
Penetrates deeply without changing surface appearance or texture - Long-Term Durability
Forms a durable internal barrier with up to 15-year service life expectancy - Freeze/Thaw Protection
Reduces water absorption to help prevent spalling, cracking, and freeze-thaw damage - Salt & Chemical Resistance
Retards chloride ion penetration from de-icing salts and reduces chemical degradation - Breathable System
Allows vapor transmission while preventing liquid water intrusion - UV & Weather Resistance
Resists UV exposure, mildew growth, and environmental deterioration - Efflorescence Reduction
Helps minimize salt migration and surface efflorescence - Low Odor / VOC Compliant
Safe, low-odor application suitable for occupied environments - Non-Film Forming Protection
Preserves natural masonry appearance without surface coating buildup - System Compatibility
Can be combined with POLASEAL PENETRANT HARDENER for enhanced masonry restoration
Recommended Substrates
Suitable for application over:
- Brick and masonry
- Concrete and block
- Stucco systems
- Stone (porous and mineral-based)
- Clay tile and slate
- Exposed aggregate concrete
- Other approved mineral-based substrates
Coverage
Approximately 100–200 sq ft per gallon
(Coverage may vary depending on substrate porosity and surface condition.)
Container Sizes
1 gallon, 5 gallon
Sealer Type
Siloxane Penetrating Water Repellent System
POLASEAL M-A Application Guideline
Surface Preparation
POLASEAL M-A is designed for application over untreated masonry surfaces. Previously treated, painted, or stained surfaces should be tested prior to application to confirm compatibility. A test application is also recommended when precise coverage rates are required.
Surfaces must be clean and free of loose debris, dirt, mildew, oil, grease, or any contaminants that may interfere with penetration or adhesion.
All repairs and patching materials should cure for a minimum of 3 days prior to treatment. A dry substrate is preferred to allow maximum penetration into the surface.
Application
Apply POLASEAL M-A using a brush, roller, or low-pressure spray equipment. Low-pressure spray application is recommended where practical for efficient and uniform coverage.
For vertical surfaces, begin at the top and work downward. Apply enough material to fully saturate the substrate. When spray-applying, use sufficient material to create a slight rundown.
For horizontal surfaces, begin at one edge and work toward the opposite side while maintaining complete saturation of the substrate.
A single coat is adequate for most applications. Extremely porous substrates or surfaces exposed to significant water infiltration may require a second coat. Apply the second coat while the first coat remains damp.
Spray Application
Use HVLP spray equipment for spray applications.
Clean-Up
Clean tools and equipment immediately after use with water and detergent.
Limitations
- Do not apply to frosted or saturated surfaces.
- Do not apply if precipitation is expected within 8 hours. Avoid spray application during strong wind conditions.
- Protect adjacent surfaces, including landscaping and shrubbery, from overspray. Overspray may damage raw copper or aluminum surfaces.
- Remove overspray from glass, metal, or vinyl surfaces within 4 hours using thinner or mineral spirits, followed by a glass cleaner.
- Store product between 38°F (3°C) and 95°F (35°C).
Safety Information
Read the product label and Safety Data Sheet (SDS) prior to use for important health and safety information.
Keep out of reach of children and pets.
For additional information, contact the Andek Technical Department.
POLASEAL M-A Technical Data
| VOC | 0 gms/liter |
| Flashpoint | Non flammable |
| Solids Content | 10% (B.W.); 10% (B.V.) |
| Density | 8.4 lb/gallon |
| Actives | Approx. 10% by weight |
| Chemistry | Catalyzed Siloxane |
| Weatherometer (5000 hours) | Pass ASTM G-23 |
| Water Permeance (Class E) |
Pass ASTM E514-74 |
| Salt Spray (300 hours) |
Pass ASTM B-117 |
| Water Absorption | Pass Federal Spec. SS-W-110C (below 1.0%) |
| Reduction in Water Absorption | 86.75% NCHRP 244 Series 11 |