Jablite is the UK's largest producer of EPS products for insulation and civil engineering applications

Pro-Foil Cavity Wall Insulation

Overview

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.

Key Benefits
  • Lightweight and easy to install
  • High performance
  • Acts as cavity rainwater barrier
  • Durable and rot-proof
  • Suitable for partial-fill or full-fill
  • Kiwa Accreditation is underway
  • Permanent insulation for the lifetime of the building
  • 100% recyclable

Sign-up to Jablite Newsletters

When we have something interesting to share – we’d like to get in touch…

I'd like to hear from Jablite
Downloads & Specifications
Pro-Foil Cavity Wall Insulation

BBA Certificates and other supporting documents can be found in Technical Resources

Technical Resources
Technical information
Product specification

Jablite 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+

Thermal Properties

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

 

U-value table

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:

  • 102mm brick wall
  • Residual Cavity
  • Pro-Foil Cavity wall
  • 100mm Block wall (0.11W/mk)
  • 12.5mm plasterboard on dabs

 

U-value (W/m2K):
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