SuperCLOSE Insulated Cavity Closer

    with simple cut to size indicators
    uPVC Cavity Closer
    Fully Certified
    Exceeds Minimal Thermal Resistance
    New build and refurbishments
3 points - SuperCLOSE

SuperCLOSE Can Be Installed In A Variety Of Ways:

  • Tack to window frame if built in.
  • Built-in as work progresses friction fitting.
  • SuperCLOSE can be installed after the reveal has been constructed by fixing the inner leaf using grab adhesive.

Vertical Jointing

If required, sections of SuperCLOSE can be jointed to minimise waste.

All joints must be tightly butted - 45 degree downwards the outer leaf.

This will stop potential water penetration.

Corner Jointing

When jointing horizontal to vertical, trim both PVC flanges and allow the vertical to extend below the horizontal - this stops water ingress.

  • One

    Measure the structural opening

  • Two

    Cut profile to required length

  • Three

    Measure the cavity width

SuperCLOSE image
  • Four

    Cut the insulation to the required width

SuperCLOSE measure
  • Five

    Fixed in place with clout nails or grab adhesive


Save Time & Money By Choosing The Right Insulation For The Job!


SuperCLOSE 100

SuperFOIL close

SuperCLOSE 150

SuperCLOSE 100

  • Insulation Width
    50mm to 100mm
  • Insultation Depth

SuperCLOSE 150

  • Insulation Width
    100mm to 150mm
  • Insultation Depth

Technical Information

Click a section on the left to expand and view full tech specs.
Can't find what you need? Email us: [email protected]

Insulation Width Length Thickness Pack Quantity Pallet Quantity Pack Weight
SC10050 - 100mm2.4m20mm1040010kg
SC150100 - 150mm2.4m20mm1030010kg
Performance Technical Standard
Thermal Conductivity0.034 W/mKEN 13163
Minimum Thermal Resistance0.877m²K/WIP 1/06

Complies with all relevant UK building regulations

Copy of Building Regulations 2010
HM Government Logo


All SuperFOIL Insulation products are independently tested by notified bodies and 3rd party certified laboratories to comply with relevant UK building regulations for use as part of construction and European regulations such as CE/UKCA.

We are also part of the Quality Mark Protection scheme and the IAA, meaning you are protected when using SuperFOIL Insulation in your project.

SuperFOIL can be used in many different situations to meet or exceed the requirements of Building Regulations for virtually any project, we can also provide U-value calculations (free of charge) for elemental or SAP assessment methods.


Here at SuperFOIL insulation, we are committed to increasing our sustainability in all our processes.

We have a new, high-tech production line in our warehouse allowing us to keep up with demand using UK manufacturing.
On top of this, our products are made from up to 40% recycled materials, namely recycled plastic drinking bottles which go into the wadding used in our insulation products helping to reduce the amount of new, raw materials being made.

We are significantly reducing the amount of plastic used in retail packaging as part of our waste management protocols, reducing the amount of waste going to landfill from our products as well as our warehouse and offices.

U Value

Technical Information

Click a section on the left to expand and view downloads.
Can't find what you need? Email us: [email protected]