Polyurethane (PU) Spray Foam
Two-component closed-cell spray polyurethane foam delivering seamless thermal insulation with integral air-sealing.
Overview
Lambda 0.022. Seamless. Airtight.
Polyurethane Spray Foam is a two-component closed-cell rigid polyurethane spray-applied insulation that combines outstanding thermal performance with integral air-sealing in a single application. The lowest lambda value of any commonly used insulation material – meaning thinner build for equivalent R-value.
Used on metal roofs, complex roof geometries, and applications where thermal bridges and air leakage are critical performance issues.
Key Features
- Closed-cell rigid PU foam
- Lambda value 0.022–0.026 W/mK
- Integral air-sealing in single application
- Adheres to most substrates without primer
- Seamless monolithic insulation layer
- Conforms to complex shapes and details
Technical Specs
Technical Specifications
All values measured at 23°C unless noted. Full test data available in the datasheet.
| Property | Value | Unit |
|---|---|---|
| Form | Two-component spray foam | – |
| Type | Closed-cell rigid PU | – |
| Mix ratio | 1 : 1 by volume | – |
| Density | 35–50 | kg/m³ |
| Thermal conductivity (λ) | 0.022–0.026 | W/mK |
| Compressive strength | ≥ 150 | kPa |
| Closed cell content | ≥ 90 | % |
| Water absorption (24h) | < 1 | % |
| Spray temperature | 45–55 | °C |
| Cure time (full) | 24 | hours |
| Service temperature | −40 to +100 | °C |
| Fire rating | Class E (LSF available) | – |
| Application thickness (per pass) | 25–50 | mm |
| Standards | EN 14315 · ASTM C1029 | – |
Applications
Where this product is used
Six typical site applications where our crews specify this product.
Metal roof insulation
Insulation and waterproofing of metal roofs.
Roof underside
Insulation of pitched roof undersides.
Cold storage
Cold room and freezer insulation.
Complex geometries
Insulation of irregular shapes and details.
Tunnels
Tunnel thermal and condensation control.
Building retrofits
Energy retrofit of existing buildings.
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