SuperFOIL Internal wall install


If you use SuperFOIL, you can efficiently insulate the internal walls without adding extra depth to the studs. SuperFOIL with a built-in vapour resistance of 1200MNs/g offers high vapour protection, better space optimisation, and the ability to install up to twice as fast compared to traditional insulation types.


To attach a timber frame to the existing solid wall, install vertical battens of the correct size at a maximum of 600mm centres. Place battens at the top and bottom of the wall and around doors or windows. SuperFOIL can be applied directly to these battens either horizontally or vertically. When applying horizontally, start at the bottom and work upwards, ensuring the product is taut, and staple at 50mm-100mm intervals. For vertical installations, begin at the top and roll the insulation downwards, maintaining tension. Cut SuperFOIL to the required length, allowing a minimum 50mm overlap between joints.

At the floor and ceiling, trim SuperFOIL with a small overlap, sealing joints using SuperFOIL superior foil tape for an airtight finish. Seal all joints, tears, or cuts fully with SuperFOIL 100m foil tape. To complete the installation, add the appropriate size counter battens on top of SuperFOIL to create an air gap and fix the internal finish onto the battens following the manufacturer’s recommendations. All SuperFOIL products needs be stored indoors until used and should be covered within 48 hours after fitting.

SuperFOIL’s flexibility extends to its application; you can use it on its own, in single/duet configurations, or in combination with traditional insulation types like mineral wool or PIR boards.

Best Products for Internal Application

Choose your Solution

Use the charts below to find the ideal combination of insulations for your project

Construction Thickness R-Value
External Surface 0.040
Brickwork 235mm 0.305
Batten / Cavity 38-63mm 0.713
SuperFOIL 40-75mm See Table
Batten / Cavity 38-63mm 0.713
Plasterboard 12.5mm 0.070
Internal surface 0.100

Technical Information

Technical Information


SF19+ SF40 SF60
Core performance 1.63 R Value 2.57 R Value 3.58 R Value
Roof Performance* 2.27 R Value 3.47 R Value 4.42 R Value
Wall Performance* 2.73 R Value 3.91 R Value 4.88 R Value
Floor Performance* 4.37 R Value 5.22 R Value 6.53 R Value
Emittance 0.05 0.05 0.05

*Core value + 2 air spaces / EN 16012

SF19+ SF40 SF60
Thickness (Nominal) 45mm 65mm 100mm
Length 10m 10m 8m
Width 1.2m/1.5m 1.5m 1.5m
Coverage 12m²/15m² 15sqm 12m²
Weight 10kg/13kg 15kg 17.75kg

*Core value + 2 air spaces / EN 16012

SF19+ SF40 SF60
Reaction To Fire (Euroclass) Class E Class E Class E

*Core value + 2 air spaces / EN 16012

SF19+ SF40 SF60
Water Vapour Resistance 2,500MNs/g 2,500MNs/g 2,500MNs/g
Resistance To Water Penetration W1 W1 W1
Tensile Properties (Length) 757/ 784 N/50mm 757 N/50mm 757/ 784 N/50mm
Tensile Properties (Width) 726 / 757 N/50mm 726 N/50mm 726 / 757 N/50mm
Resistance to Tearing (Length) 450N 450N 450N
Resistance to Tearing (Width) 491N 491N 491N
Elongation (Length) 15% / 17% 15% / 17% 15% / 17%
Elongation (Width) 14% / 16%
Flexibility at Low Temp. -40°C -40°C -40°C

*Core value + 2 air spaces / EN 16012

SF19+ SF40 SF60
Reinforced Heavy Duty Double Foil Laminated Outer Layers 2 2 2
Mesh Reinforced Foil Laminated Outer Layers 0 0 0
Aluminium Coated Reflective Foil PET Layers 4 8 11
Thermo Foam Separation Layers 0 0 0
Loft Quilt 80g/sqm Layers 5 9 12
Total Layers 11 19 25

*Core value + 2 air spaces / EN 16012

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