SuperFOIL SF6 Multi Layered Foil Insulation – 10m x 1.2m

SuperFOIL SF6 Multi Layered Foil Insulation is a lightweight, flexible and airtight multifoil insulation designed specifically for DIY insulation projects. Suitable for use in roofs, walls and floors, SF6 provides high thermal performance from a relatively slim 30mm thick multi-layer construction.

Designed with straightforward installation in mind, SuperFOIL SF6 can be installed as a continuous insulation layer around joists and rafters, helping reduce the cutting, fitting and material waste associated with installing insulation individually between structural members.

The reflective foil surfaces provide a low-emissivity radiant barrier, helping retain heat during winter while reducing radiant heat gain during hot summer conditions. SF6 can be installed as a standalone insulation product in suitable applications or combined with other forms of insulation to achieve improved overall thermal performance.

Each 1.2m x 10m roll covers 12m² and weighs just 5.5kg, making it easy to transport, handle and position during DIY installation.

What is SuperFOIL SF6 Used For?

SuperFOIL SF6 is a versatile DIY multifoil insulation suitable for a range of insulation projects.

Typical applications include:

• Pitched roof insulation
• Loft and attic insulation
• Wall insulation
• Timber frame applications
• Floor insulation
• Refurbishment projects
• Extensions
• DIY insulation upgrades
• Supplementing existing insulation
• Insulating around joists and rafters

Its flexible construction makes SF6 particularly useful where installing rigid or bulky insulation materials would require extensive cutting and fitting.

High-Performance DIY Multifoil Insulation

SuperFOIL SF6 has been developed with the DIY installer in mind, providing a more accessible way to benefit from multi-layer reflective insulation.

Despite its lightweight construction, SF6 is manufactured using the same type of high-quality materials found within SuperFOIL’s trade insulation range.

SF6 does not have third-party certification, helping make it a more cost-effective option for suitable DIY applications where certified insulation products are not specified or required.

For projects requiring independently certified thermal performance or specific Building Regulations compliance, the suitability of the insulation system should be confirmed before installation.

Continuous Insulation Around Joists and Rafters

A major advantage of SuperFOIL SF6 is its ability to be installed as a continuous layer around suitable joists and rafters.

Traditional insulation can require individual sections to be measured and cut to fit between structural members. This can increase installation time and create offcuts and material waste.

The flexible roll format of SF6 allows the insulation to follow the building structure, reducing the amount of cutting required and helping create a more continuous insulation layer.

This can provide several practical benefits:

• Faster installation
• Reduced cutting
• Less material waste
• Fewer individual insulation sections
• Improved continuity of the insulation layer
• Easier installation around structural members

Reflective Radiant Barrier

SuperFOIL SF6 incorporates highly reflective surfaces with a low emittance of 0.05.

These reflective surfaces act as a radiant barrier, reducing radiant heat transfer across adjacent airspaces.

During winter, this helps retain useful heat within the building. During warmer summer conditions, the reflective surfaces can help reduce radiant heat entering through the building envelope.

This gives SF6 useful year-round performance for suitable roof, wall and floor applications.

Roof Thermal Performance

When installed in an appropriate roof construction with the required airspace, SuperFOIL SF6 provides a stated:

Roof R-value: 1.90 m²K/W

The combination of the multifoil insulation and low-emissivity airspace contributes towards the overall thermal resistance of the installation.

Wall Thermal Performance

For suitable wall applications including the appropriate airspace, SuperFOIL SF6 provides a stated:

Wall R-value: 2.32 m²K/W

Its flexible construction makes it particularly useful for timber and framed wall applications where a continuous reflective insulation layer is required.

Floor Thermal Performance

When incorporated into an appropriate floor construction with the required airspace, SuperFOIL SF6 provides a stated:

Floor R-value: 3.64 m²K/W

The actual performance achieved will depend on the complete floor build-up and installation configuration.

Core R-Value of 0.99

The SuperFOIL SF6 insulation itself provides a stated core R-value of 0.99 m²K/W.

Higher stated roof, wall and floor R-values account for the thermal contribution provided by the product when installed in the specified configuration with suitable adjacent airspaces.

The performance of reflective insulation is therefore dependent on correct installation, particularly the provision of the required airspace.

Can Be Combined with Other Insulation

SuperFOIL SF6 can be used alongside other suitable insulation products as part of a hybrid insulation system.

This allows conventional insulation products and reflective multifoil insulation to work together to achieve the required overall thermal performance.

When used with additional insulation products, SuperFOIL states that constructions incorporating SF6 can achieve U-values as low as 1.90 W/m²K, depending on the complete construction and insulation combination.

Project-specific U-values should be calculated using the complete building element rather than the SF6 product in isolation.

Airtight Multilayer Construction

SuperFOIL SF6 is designed to provide an airtight insulation layer when correctly installed and appropriately sealed.

Reducing uncontrolled air movement through the building envelope can help reduce heat loss and improve the effectiveness of the overall insulation system.

Careful sealing of joints, overlaps, edges and penetrations is important to maintain continuity across the installed layer.

High Water Vapour Resistance

SuperFOIL SF6 provides a stated water vapour resistance of 1200 MNs/g.

Its high resistance to water vapour allows SF6 to contribute towards moisture and vapour control within an appropriately designed building construction.

The position of insulation and vapour control layers should always be considered as part of the complete roof, wall or floor build-up.

W1 Water Resistance

SuperFOIL SF6 achieves a W1 resistance to water penetration, providing a high level of resistance to water passing through the material.

This provides additional protection within suitable applications and contributes towards the product’s versatility as a multi-purpose DIY insulation solution.

Flexible Down to -40°C

SuperFOIL SF6 has a stated low-temperature flexibility of -40°C.

This helps the material maintain its flexibility in very cold conditions, supporting handling and durability across a wide range of environmental temperatures.

Lightweight and Easy to Handle

Despite providing 12m² of coverage, each roll of SuperFOIL SF6 weighs only 5.5kg.

Its relatively low weight makes the insulation easier to:

• Carry
• Transport
• Lift into loft spaces
• Position between structural elements
• Install overhead
• Cut and adjust
• Handle when working alone

This is particularly beneficial for DIY installations where specialist lifting or handling equipment is unlikely to be available.

30mm Thick Multifoil Insulation

SuperFOIL SF6 has a nominal thickness of 30mm.

The multi-layer construction provides useful thermal resistance while occupying relatively little space compared with many conventional insulation systems.

This can make SF6 particularly useful in refurbishment and DIY projects where available insulation depth is limited.

Reaction to Fire Class E

SuperFOIL SF6 has a stated Reaction to Fire classification of Class E when installed behind plasterboard.

The complete construction and required fire performance should always be considered when specifying insulation, particularly where a project is subject to Building Regulations or other specific fire-performance requirements.

Key Features and Benefits

• DIY multifoil insulation: Designed specifically with DIY installation in mind
• 12m² coverage: Each 1.2m x 10m roll covers 12m²
• 30mm thick: Multi-layer thermal performance from a relatively slim construction
• Lightweight: Weighs only 5.5kg per roll
• Flexible: Easy to position around joists, rafters and structural elements
• Continuous installation: Can reduce the need for individual cut-and-fit sections
• Reduced waste: Fewer offcuts can help minimise wasted insulation
• Quick installation: Lightweight roll format simplifies handling and fitting
• Radiant barrier: Reflective surfaces help reduce radiant heat transfer
• 0.05 emittance: Low-emissivity reflective surfaces
• Year-round performance: Helps retain heat in winter and reduce radiant heat gain in summer
• Core R-value of 0.99: Provides useful thermal resistance
• Roof R-value of 1.90: When installed in the appropriate configuration including airspace
• Wall R-value of 2.32: When installed in the appropriate configuration including airspace
• Floor R-value of 3.64: When installed in the appropriate configuration including airspace
• Hybrid insulation compatible: Can be combined with other suitable insulation products
• Airtight: Helps create a continuous airtight insulation layer when correctly sealed
• High vapour resistance: 1200 MNs/g
• W1 water resistance: High resistance to water penetration
• Cold-temperature flexibility: Remains flexible down to -40°C
• Class E reaction to fire: Stated classification when installed behind plasterboard
• Cost-effective: Designed as an economical DIY alternative to certified trade products

SuperFOIL SF6 Multi Layered Foil Insulation Specification

Why Choose SuperFOIL SF6 Multi Layered Foil Insulation?

SuperFOIL SF6 Multi Layered Foil Insulation provides a practical and cost-effective way to add reflective insulation to a wide range of DIY roof, wall and floor projects.

Its 30mm multi-layer construction combines useful core insulation performance with highly reflective low-emissivity surfaces, allowing the product to benefit from adjacent airspaces and provide stated R-values of up to 1.90 in roofs, 2.32 in walls and 3.64 in floors, depending on the installation configuration.

Unlike insulation products that must be individually cut and fitted between every joist or rafter, the flexible SF6 roll can be installed as a continuous insulation layer around suitable structural members. This can make installation faster while reducing cutting and unnecessary material waste.

At just 5.5kg per 12m² roll, SF6 is also lightweight and straightforward to handle, making it particularly well suited to DIY installations.

SuperFOIL SF6 does not carry third-party certification, which helps make it a more economical alternative for suitable DIY projects. Where third-party certification or specific regulatory performance is required, an appropriate certified SuperFOIL product should be specified instead.