Belzona 5871
Cool-to-Touch Thermal Insulation Barrier
An anti-corrosion thermal insulation barrier with cool-to-touch properties for industrial pipework, ducting and equipment.
A two-component, polymeric, 100% solids system providing a thermal insulation barrier with corrosion protection and cool-to-touch properties. Applied by brush, cartridge or plural spray, this material expands upon application to produce a lightweight, closed-cell foam, reducing metallic substrate surface temperatures to below 60°C (140°F) while providing corrosion protection.
- SeriesBelzona 5000 Series
- Documents3
Overview of Belzona 5871
A two-component, polymeric, 100% solids system providing a thermal insulation barrier with corrosion protection and cool-to-touch properties. Applied by brush, cartridge or plural spray, this material expands upon application to produce a lightweight, closed-cell foam, reducing metallic substrate surface temperatures to below 60°C (140°F) while providing corrosion protection.
Key Benefits
No solvents, no shrinkage during cure
Applied by brush or spray for fast and efficient coverage
Outstanding resistance to corrosion in salt spray and chemical environments
Application Areas
What this product handles, grouped by equipment area — each links to the full application.
Ships & Maritime Structures
2 applicationsPipelines
1 applicationTechnical Data
Performance Characteristics
- Surface temperature reduction
- Reduces metallic substrate surface temperature to below 60°C (140°F)
- Eliminates corrosion under insulation (CUI) by combining barrier coating and thermal insulation in one layer
- Anti-condensation and anti-icing properties
- Cool-to-touch
- Personnel safety against contact-burn injuries
- Energy efficiency
- Reduces heat transfer through equipment surfaces
- Refer to the attached Product Specification Sheet for full thermal and mechanical data
Cure Times
At 20°C (68°F)
Cure rates are temperature-dependent; refer to the IFU for full tables.
- Tack-free
- Approximately 5 minutes (rises and gels rapidly)
- Walk-on / handle
- 1 - 2 hours
- Full cure
- 24 hours
Service Temperature Limits
- Substrate temperature range during application
- Substrate up to ambient — refer to IFU
- Continuous service temperature range
- Cryogenic to elevated — refer to PSS for limits applicable to your installation
- Surface temperature reduction
- Reduces metallic substrate exposed surface temperature to below 60°C (140°F)
Mixing & Application
Product PDFs
Gallery
Videos
Frequently Asked Questions
What makes Belzona 5871 cool-to-touch?
Belzona 5871 expands upon application into a lightweight closed-cell foam that provides thermal insulation. This insulation reduces the surface temperature of the metallic substrate to below 60°C (140°F), making it safe to touch and protecting personnel from contact-burn injuries.
Does Belzona 5871 also protect against corrosion?
Yes. In addition to thermal insulation, Belzona 5871 provides excellent corrosion resistance and eliminates corrosion under insulation (CUI), as well as preventing condensation and providing anti-icing benefits.
How is Belzona 5871 applied?
Belzona 5871 can be applied by brush, cartridge gun, or plural-component spray. The choice depends on the geometry and size of the application area: brushes and cartridges suit small complex shapes, plural spray suits large areas.
Related Products
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