Jablite Pro-Foil Cavity Wall Insulation is a high-performance Partial-Fill and Full-Fill Cavity Wall insulation with improved thermal resistance.
Pro-Foil is manufactured from expanded polystyrene (EPS) with a laminated air cushioned film and a reflective aluminium foil-facing. This provides a superior thermal resistance that lowers U-values enabling a reduction in cavity wall thickness. The board also provides a higher vapour resistance and the overlap at the bottom of the board provides a cavity rainwater barrier.
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Technical ResourcesJablite Pro-Foil is designed to be used in cavity wall construction. It combines the improved thermal conductivity of EPS and low emissivity of a foil (laminate of bubble foil and aluminium with reflective surface) to reduce U-values and therefore the building footprint can be reduced. It also provides improved vapour resistance properties and acts as a cavity rain barrier.
Dimensions
Standard size: EPS – 1200 x 450 mm x required thickness
Reaction to fire:
EPS – Euroclass E
Foil – Euroclass E
EPS grade:
70 HP+
| EPS thermal conductivity | 0.030 W/mK |
| Thermal resistance of the foil | 0.12 m² K/W |
| EPS thermal conductivity 0.030 W/mK |
0.030 W/mK |
| Thermal resistance of the foil | 0.12 m² K/W |
| Thermal resistance of the 10mm airgap (To BS EN ISO 6946:2017 |
0.365 m² K/W |
| Thermal resistance of ≥ 20mm airgap (To BS EN ISO 6946:2017) |
0.713 m² K/W |
| Foil emissivity 0.03 declared | 0.03 declared |
Thermal Performance
A U-Value of 0.018 W/m2 K can typically be achieved with a 105mm thickness of Jablite Pro-Foil Partial-Fill Cavity Wall Insulation and 115mm thickness Jablite Pro-Foil Full-Fill Cavity Wall Insulation based on a common cavity wall construction using aerated blocks and 12mm plasterboard on dabs.
The Following U-values calculations are based on a typical wall construction:
 |
|
| Regulatory Requirements | Pro-Foil thickness | U-Value W/m²K |
| ADL 2021 – new dwellings | 55mm | 0.26 |
| ADL 2021 – existing dwellings | 105mm | 0.18 |
| 2025 Future Homes* | 145mm | 0.15 |
| Regulatory Requirements | Pro-Foil thickness | U-Value W/m²K |
| ADL 2021 – new dwellings | 65mm | 0.26 |
| ADL 2021 – existing dwellings | 115mm | 0.18 |
| 2025 Future Homes* | 155mm | 0.15 |
