Advanced Multi-Layer Foil Insulation Technology
SuperFOIL insulation is a family of British-manufactured multi-foil insulation products that have become the benchmark for high-performance, space-saving insulation in the UK. Unlike traditional mineral wool or fibreglass batts, SuperFOIL products work on the principle of radiant barrier technology — using highly reflective aluminium foil layers to reduce radiant heat transfer, combined with layers of insulating wadding to minimise conductive and convective heat flow.
The result is an incredibly thin yet highly effective insulation product that is easier to install, cleaner to handle, and often performs significantly better than traditional alternatives, particularly in applications where space is at a premium. Whether you are insulating a pitched roof, a flat roof, a loft floor, or internal walls, SuperFOIL has a product engineered for the task.
As approved SuperFOIL installers, Loft Insulations brings the full range of SuperFOIL products to homeowners and builders across the UK. Our experienced team can advise on the correct product for your specific application, ensuring you get the best possible performance from your investment.
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The SuperFOIL Product Range
SuperFOIL manufactures a comprehensive range of insulation products, each designed for specific applications:
- SF19 & SF40BB — General-purpose multi-foil insulation suitable for pitched roofs, loft conversions, and walls. SF40BB incorporates a breathable facing ideal for unventilated rafter applications.
- SFTV — A specialist timber frame and ventilated cavity product designed to work within structural timber systems.
- SFUF — Under-floor insulation in a roll format, designed to fit between floor joists with ease.
- SFTAPE & SFBUTYL — Complementary tapes for creating fully continuous, airtight insulation layers with no thermal bridging.
- SF5 & SF19 Plus — Enhanced products for extremely demanding applications including cold stores, agricultural buildings, and commercial properties.
Our team will survey your property and recommend exactly the right product for your application, taking into account the building's construction type, ventilation requirements, and your performance goals.
Why SuperFOIL Outperforms Traditional Insulation
Traditional insulation products like mineral wool and fibreglass only address conductive heat transfer — the movement of heat through solid materials. SuperFOIL addresses all three modes of heat transfer:
Radiant Heat Reflection
The polished aluminium layers reflect up to 97% of radiant heat, the dominant mechanism in roof spaces.
Conductive Insulation
Multiple wadding layers reduce the rate at which heat conducts through the material, equivalent to much thicker traditional products.
Convective Control
The continuous layers create sealed air spaces that prevent convective loops — a major source of heat loss in traditional insulation installations.
SuperFOIL and Building Regulations
SuperFOIL products have been independently tested and assessed for compliance with UK Building Regulations. When correctly installed, SuperFOIL products meet or exceed the U-value requirements set out in Approved Document L of the Building Regulations for England and Wales, as well as equivalent standards in Scotland and Northern Ireland. Our installations always include the necessary documentation to confirm compliance.
The Benefits of Choosing SuperFOIL Insulation
Space-Saving Thin Profile
SuperFOIL products achieve outstanding thermal performance in products as thin as 25mm — making them the ideal thin loft insulation solution for low-headroom spaces.
Lightweight & Easy to Handle
Unlike bulky mineral wool, SuperFOIL is lightweight and supplied in rolls, making it easier to transport to difficult locations and far cleaner to work with.
All-Season Performance
The reflective properties of SuperFOIL work in both directions — keeping heat in during winter and reflecting solar gain away during summer for year-round comfort.
Vapour Control
Many SuperFOIL products incorporate vapour control layers that prevent condensation forming within the structure — a critical consideration in loft and roof applications.
Eco-Friendly
SuperFOIL products are fully recyclable and contain no harmful fibres or chemicals, making them a cleaner choice for both the installer and the environment.
Versatile Applications
Suitable for pitched roofs, flat roofs, loft floors, wall cavities, floor voids, and more — one product range covers virtually every insulation challenge.
SuperFOIL Installation: What to Expect
Our installation process is thorough, professional, and designed to cause minimum disruption to your daily life:
- Free Survey: Our surveyor visits your property to assess the loft or roof space, take measurements, and identify the correct SuperFOIL product for your needs.
- Detailed Quote: We provide a clear, itemised written quotation with no hidden charges. We explain our recommendations in plain English.
- Installation Day: Our qualified installers arrive at the agreed time, protect your home during the work, and complete the installation to the highest standard.
- Completion Check: We walk you through the completed installation, answer any questions, and issue all relevant documentation including compliance certificates.
- Aftercare: We remain available for any follow-up questions and back our work with a comprehensive workmanship guarantee.