Vapor Seal Primer – Advanced Moisture Protection - Clear & Tintable (3 Gallon Kit)
Vapor Seal Primer – Advanced Moisture Protection for Concrete Floors
Moisture is one of the leading causes of epoxy floor coating failures, often resulting in peeling, bubbling, and loss of adhesion. Vapor Seal Primer is specifically designed to address this challenge by creating a strong bond to concrete, even in conditions where excessive moisture would prevent traditional primers from performing properly.
Unlike many standard epoxy primers that require a completely dry surface, Vapor Seal Primer is highly moisture-tolerant and can cure on damp concrete. Its low-viscosity formula allows it to penetrate deep into the concrete surface, creating exceptional adhesion and helping to strengthen the foundation of your floor coating system.
Why Choose Vapor Seal Primer?
- Helps protect against moisture-related coating failures
- Bonds to damp concrete where many traditional primers cannot
- Deep-penetrating formula enhances adhesion and durability
- Creates a stronger foundation for epoxy and polyaspartic floor systems
- Ideal for garages, warehouses, commercial buildings, and industrial facilities
Proven Moisture Vapor Reduction
Independent laboratory testing has demonstrated the remarkable performance of Vapor Seal Primer. Floors exhibiting moisture vapor emission rates as high as 12 lbs per 1,000 sq. ft. over 24 hours were reduced to less than 1 lb per 1,000 sq. ft. over 24 hours after application.
By dramatically reducing moisture vapor transmission, Vapor Seal Primer helps protect your floor coating investment and promotes long-term performance in challenging environments.
Important Mixing & Installation Information
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Installation Detail |
Product Information |
|---|---|
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Mix Ratio |
2 parts Part A to 1 part Part B by volume |
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Mixing Time |
Mix for 3–4 minutes using a slow-speed drill and suitable mixing paddle |
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Working Time |
Approximately 30 minutes; temperature and batch size will affect working time |
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Standard Coverage |
Approximately 200 sq. ft. per gallon |
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Standard Film Thickness |
Approximately 8 mils at 200 sq. ft. per gallon |
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Higher Moisture Conditions |
When moisture vapor emission exceeds 8 lb./1,000 sq. ft./24 hr., apply multiple coats to achieve a minimum total thickness of 16 mils |
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Maximum Moisture Rating |
Designed for moisture vapor emission rates up to 15 lb./1,000 sq. ft./24 hr. when properly installed |
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Concrete Profile |
Mechanically prepare by diamond grinding or shot blasting to achieve an ICRI CSP 3–5 profile |
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Concrete Cure Time |
Concrete must be cured for at least 14 days |
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Application Temperature |
50°F–95°F |
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Dry Time |
Approximately 5–7 hours at 73°F and 50% relative humidity |
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Recoat Window |
Recoat when completely dry to the touch—typically around 8 hours—but within 24 hours |
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Light Foot Traffic |
Approximately 24 hours |
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Light Vehicle Traffic |
Approximately 72 hours |
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Heavy Traffic |
Approximately 7 days |
Important: Immediately pour the mixed material onto the prepared surface. Do not leave mixed epoxy in the mixing container, as heat buildup can significantly shorten the working time. Drying and cure times are approximate and will vary with temperature, humidity, airflow, film thickness, and jobsite conditions. Always review the current Technical Data Sheet and Safety Data Sheets before use.