Description
Fiberlock- Asbestos & Cement Board Protective Coating – High-Impact Mastic
SerpiMastic is a high-performance, ultra-durable mastic coating designed for asbestos, cement asbestos boards, and thermal insulation materials on boilers and pipes. This weather, UV, and chemical-resistant protective coating provides high-impact protection, making it ideal for substrates that require long-lasting durability. SerpiMastic is UL classified as a bridging encapsulant and meets ASTM standards for use with classified sprayed fiber and cementitious mixtures. It is easy to apply with either a brush or spray, offers excellent resistance to physical damage, and provides a one-coat solution for enhanced protection.
Key Features:
✅ Extremely Durable – Resists impact up to 160 psi for superior protection.
✅ One-Coat System – Efficient and effective with minimal application time.
✅ Weather, UV, and Chemical Resistant – Ideal for both indoor and outdoor use.
✅ No Plasticizers or Fiberglass – Safe, non-toxic formulation.
✅ UL Approved – Meets UL1479, ASTM E814 & E119 standards for fire protection.
Specifications:
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Application: Asbestos, cement board, and thermal insulation protection
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Coverage: 18.5 sq. ft. per gallon @ 63 dry mils
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Drying Time: 2 hours to touch, completely dry in 48 hours
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Application Method: Brush or spray
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Storage: Store in a dry place between 40°F and 90°F
Available Options:
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Standard Model – Ready-to-use, no thinning required


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