ARC Smart Closer SC100 100mm Cavity 100 x 2400mm (Pack of 8) by ARC Building Solutions

The ARC Smart-Closer SC100 is designed for 100mm cavity masonry construction, closing the cavity at window and door reveals to minimise thermal bridging and reduce the risk of damp and mould. Supplied in a pack of 8 x 2.4m lengths, it incorporates an integral plastic DPC — eliminating a separate damp proof course installation at the reveal. Not fire rated: for fire-rated reveals, see the ARC Eco-Closer Plus.

The rigid PVCu profile with EPS insulation core (thermal conductivity 0.038 W/mK) delivers effective cold bridge reduction at the 100mm reveal, addressing a leading cause of condensation and mould growth in modern masonry construction. The Smart-Closer SC100 can be installed first-fix during brickwork progression or second-fix as a push-fit into the formed opening. A single flange version is available for check reveal details.

Key facts:

• Cavity width: 100mm
• Pack of 8 x 2.4m lengths
• Integral plastic DPC — no separate damp proof course required
• EPS insulation core — thermal conductivity 0.038 W/mK
• Rigid PVCu profile; single flange option available for check reveal details
• First-fix or second-fix installation
• Not fire rated — for fire-rated applications see ARC Eco-Closer Plus

Where a fire rating is required at the cavity reveal, the ARC Eco-Closer Plus is the recommended alternative.

Installation info:

First fix: build in jamb sections during brickwork progression using ARC Brick Ties at 225mm centres; hold sill with adhesive or nail. Cut jamb sections to opening height plus 75mm. Second fix: push-fit the SC100 into the formed 100mm opening and secure with nails or adhesive. Butt sill sections tightly to jambs with no gaps at corners.