Universal 150 EPS Cavity Closer 100-150mm x 2.4m

The Universal 150 White EPS Cavity Closer is a high-performance, fully rigid insulated closer designed to close cavities around window and door openings. Engineered to provide a continuous thermal break, it effectively eliminates "cold bridging" where the inner and outer leaves of a masonry or timber frame wall meet. The closer features a durable, grey uPVC profile packed with high-quality white expanded polystyrene (EPS) insulation. Its design is versatile and user-friendly, featuring pre-cut grooves that allow the insulation to be easily trimmed to fit specific cavity widths on-site. By providing a reliable DPC (Damp Proof Course) and thermal barrier, it significantly reduces the risk of moisture migration, condensation, and mould growth around internal reveals.

Benefits

• Provides an effective thermal break to prevent cold bridging and internal condensation
• Features a multi-width design with simple cut-to-size indicators for on-site flexibility
• Helps buildings comply with Building Regulations Approved Documents C, L1, and L2
• Manufactured from recycled uPVC for a more sustainable construction choice
• Suitable for use in both traditional masonry cavity walls and timber frame constructions

Good to know

• Each length measures 2400mm (2.4m)
• This specific "Universal 150" model is designed to suit cavity widths ranging from 100mm to 150mm
• The EPS insulation has a declared thermal conductivity of 0.034 W/mK
• It exceeds the minimum thermal resistance path required by accredited construction details (0.45m²K/W), providing a path of 0.95m²K/W
• For installation, it can be tacked to the window frame, built-in as work progresses, or fixed to the inner leaf using grab adhesive
• Sections can be jointed to minimize waste, provided they are tightly butted and angled to prevent water penetration