Eco-Closer Plus

Cold Bridging product

ARC Eco-Closer Plus

  • Up to one hour fire integrity
  • Closes cavity around window and door reveals in larger cavities up to 300mm
  • Prevents cold bridging
  • Helps eliminate moisture, mould and staining from around windows and doors
  • Insulated with foil faced non-combustible rockfibre
  • Plastic profile acts as DPC
  • For cavity widths from up to 300mm


ARC Eco-Closer Plus closes wider cavities around window and door openings in masonry walls, providing up to one hour fire integrity. The rigid PVCu profile is insulated with foil faced non-combustible rockfibre mineral wool which provides fire, thermal and acoustic properties.

Key stats

Insulation Non-combustible rockfibre mineral wool insulation
Thermal conductivity 0.037W/mK

Frequently asked questions about this product

Can this product be used with an SFS internal leaf?

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

Do you have to install a separate DPC?

ARC Eco-Closer Plus 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 Plus 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 Plus together?

Please follow the guidance on the product datasheet.

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

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

Other products you may be interested in

Cold Bridging product


ARC Contract-Closer closes the cavity around window and door openings.

Product details
ARC Building Solutions

Fire product

Cavity Stop Sock

ARC Cavity Stop Sock restricts the spread of smoke and flames within the cavity of external masonry walls.

Product details

Fire product

Fire Stop Slab

ARC Fire Stop Slab provides up to two hours fire integrity horizontally or vertically within external masonry walls, ideal for use at separating floor levels.

Product details

Fire product

Party Wall DPC

ARC Party Wall DPC enables the closing of an external cavity at either party wall or party floor junctions where building regulations require the use of mineral wool closer for acoustic insulation purposes.

Product details