Best Loft & Wall Insulation — 1.2m x 10m (2026)
2 loft & wall insulation matching size “1.2m x 10m”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Best Loft & Wall Insulation UK (2026) guide.
This 1.2m x 10m Loft & Wall Insulation is designed to provide thermal protection for a linear wall space measuring precisely this size. Crafted from high-density mineral wool, it’s engineered to minimise heat loss and improve energy efficiency in your home. This roll of insulation offers a straightforward solution for insulating long walls – perfect for extensions, garages, or any area requiring targeted thermal control.
Each panel is cut to the exact 1.2m width, allowing for efficient installation with minimal waste. The mineral wool construction resists moisture and fire, offering enhanced safety and durability. This roll provides a consistent level of insulation across its full 10-metre length, ensuring uniform thermal performance.
Installation is relatively simple with standard tools, though we recommend consulting the manufacturer’s instructions for specific guidance. Please note that this product is supplied as a roll and requires cutting to size before installation. Ensure adequate ventilation during use and always wear appropriate safety gear.
#1 Pick
SuperFOIL SF6 Multifoil Insulation 1.2m x 10m - Energy Saving DIY Multifoil Insulation Roll - 3-in-1 Sustainable Thermal Insulation Reflective Radiant Barrier & Vapour Barrier- Multifoil
- 1.2m x 10m
£84.99
Pros
- Thin multifoil roll saves space versus bulky mineral wool in tight lofts
- 3-in-1 design combines insulation, radiant barrier and vapour barrier
- Lightweight roll is easy for one person to install solo
Cons
- Needs an air gap either side to perform as rated, adding install complexity
#2 Pick
SuperFOIL SF19+ Multifoil Insulation 1.2m x 10m | High-Performance Thermal Roll for Loft, Roof, Wall & Floor- Multifoil
- 1.2m x 10m
£109.99
Pros
- 3-in-1 multifoil combines thermal insulation, vapour barrier and radiant foil in one roll
- Slim profile saves internal space versus thick mineral wool builds
- Suits loft, roof, wall and floor applications from a single product
Cons
- Needs taped, sealed laps to perform properly, so installation is fiddlier than a simple roll
FAQ
What type of wall is this insulation suitable for?+
This mineral wool insulation is best suited for solid walls, brick, or blockwork. It’s not ideal for timber frame construction without additional fixing methods as the density may require more robust support.
How much does it cost to install this insulation?+
Installation costs vary depending on your experience and the complexity of the project. Generally, expect to pay between £50-£150 per roll for a basic installation, but professional fitters may charge more – get multiple quotes.
How does this compare to fiberglass insulation?+
Mineral wool offers superior thermal performance compared to fiberglass due to its denser structure. It’s also fire resistant and doesn't generate as much irritating dust during installation, making it a preferable option for many users.
What tools will I need to install this?+
You’ll typically need a tape measure, utility knife, staple gun (or similar fixing mechanism), gloves, and safety glasses. A saw might be necessary for precise cutting if required – ensure you use appropriate safety measures.
Does this insulation require any special ventilation?+
Yes, it's crucial to maintain adequate ventilation behind the insulation to prevent moisture build-up. Ensure there’s a gap of at least 50mm between the insulation and the wall surface for airflow.
What is the fire rating of this product?+
This roll has a Class B fire rating, meaning it will burn slowly and release less smoke than a Class A rating. However, always check the manufacturer’s specification for precise details.
How do I cut the insulation to length?+
Use a sharp utility knife or scissors to carefully cut the roll to your desired length. Always use a straight edge to ensure accurate cuts and wear gloves for protection against irritation.
Can I install this insulation myself, or does it require professional help?+
DIY installation is possible but can be challenging, particularly for larger areas. Professional installers have the experience and tools to ensure correct installation and optimal performance – consider their expertise carefully.
What’s the typical R-value of this product?+
The R-value of this mineral wool insulation typically ranges from 3.5 to 4.0 per metre squared, depending on the density. Consult the manufacturer's specifications for a precise figure and ensure it meets your local building regulations.
What safety precautions should I take during installation?+
Always wear gloves and eye protection when handling the insulation. Work in a well-ventilated area to minimize dust inhalation, and follow all manufacturer’s instructions carefully – safety first!