Mastics Collection – Protective Coatings for Insulation Systems

Our Mastics Collection features a robust lineup of Foster® and Childers® mastics, designed to protect, seal, and encapsulate insulation systems across industrial, commercial, and marine environments. These coatings offer superior performance in moisture resistance, fire protection, and long-term durability—making them essential for demanding insulation applications.

Product Categories & Applications

1. Monolar Mastics – Heavy-Duty Sealing

• Foster® 60-39, 60-91, 60-90, 60-38

• Solvent-based, non-asbestos formulations
• Excellent water and weather resistance
• Ideal for sealing insulation on ducts, pipes, and vessels
• Available in grey or white, in 20L/25kg pails
• Sprayable variants: 60-95 (white), 60-96 (grey)

2. Sealfas Coatings & Encapsulants

• Foster® 30-36, 97-02

• Water-based, fire-resistant coatings
• Used for encapsulating insulation and asbestos-containing materials
• IMO-certified options for marine applications
• Available in white, with brush or spray application

3. Weatherite Mastics

• Foster® 36-10

• Designed for outdoor insulation protection
• UV-resistant and flexible in extreme temperatures
• Ideal for HVAC systems and exposed ductwork

4. Fireflex Coatings

• Foster® 30-52

• Available in white, grey, and black
• Fire-rated and suitable for high-risk environments
• Excellent adhesion to metal and insulation surfaces

5. Vapor Safe Coatings

• Foster® 30-90

• Creates a vapor-tight barrier over insulation
• Ideal for cold storage, chilled water lines, and cryogenic systems
• White finish with brush or spray application

6. Stackfas Mastics

• Foster® 60-44

• Designed for vertical stack applications
• High-build coating with excellent sag resistance
• Suitable for high-temperature and high-humidity environments

7. Fire-Resistant Mastics

• Foster® 65-05 & 65-06 F.R. C.I.

• High solids, weather-barrier mastics
• Replace conventional asphalt cutback mastics
• Ideal for low-temperature insulation systems
• Fire-resistant and suitable for outdoor service

8. Childers® CP-55

• Alu Grey finish

• Protective coating for thermal insulation
• Excellent adhesion and weather resistance
• Used in industrial and marine settings

Technical Benefits

• Application methods: brush, spray, or trowel
• Coverage: varies by product, typically 1–2 m² per liter depending on surface
• Dry film thickness: optimized for long-term protection
• VOC compliance: many products meet low-emission standards
• Certifications: IMO, ASTM E84, UL-rated options available

Sustainability & Safety

• Many mastics are halogen-free, asbestos-free, and low-VOC, supporting healthier indoor environments and compliance with green building standards like BREEAM, LEED, and DGNB.
• Fire-rated options enhance safety in high-risk zones, while vapor-tight coatings prevent condensation and mold growth.

Ideal Use Cases

• HVAC ductwork and piping insulation
• Marine and offshore insulation systems
• Cold storage and cryogenic applications
• Asbestos encapsulation and remediation
• Industrial plant insulation protection
• Vertical stacks and high-humidity zones