Cold bridging product

ARC Eco-Closer

  • Up to 60 minutes fire integrity
  • Closes cavity around window and door reveals
  • Prevents cold bridging
  • Integral DPC helps eliminate moisture, mould and staining from around windows and doors
  • Insulated with non-combustible rockfibre
  • Eco-Closer cavity widths: 50 – 150mm (see Eco-Closer Plus cavity widths: 150 – 300mm)
  • Single flange available for check reveal details
  • Third-party certificated by IFC


ARC Eco-Closer closes the cavity around window and door openings in masonry walls, providing up to 60 minutes fire integrity. The rigid PVCu profile is insulated with non-combustible rockfibre mineral wool which provides fire, thermal and acoustic properties.

Key stats

Length supplied 2.4m
Third-party certification IFC certificate number: IFCC 1729
Insulation Non-combustible rockfibre mineral wool
Thermal conductivity 0.035W/mK
Fire rating Up to 60 minutes
Insulation performance 15 minutes
Test standard EN1366-4
Construction type Masonry
Orientation Vertical or horizontal
Integral DPC Yes

Frequently asked questions about this product

Can this product be used with an SFS internal leaf?

ARC Eco-Closer is fire rated and certified for use in a traditional masonry construction.

Do you have to install a separate DPC?

ARC Eco-Closer includes a plastic profile which acts as an integral DPC, eliminating the need to install a separate DPC.

Do you need a compression fit?

The ARC Eco Closer is manufactured to suit your specific cavity width, and does not require a compression fit.

How do I join 2 lengths of ARC Eco-Closer together?

Please follow the guidance on the product datasheet.

Do I need to use fixings with ARC Eco-Closer?

Fixings are not required for the product to achieve its performance criteria. Please see the product datasheet for available fixings.

Industry awards and accreditations for this product

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