XPS Polystyrene Cavity Closers

XPS Polystyrene Cavity Closers are high-performance building components designed to seal the gaps in cavity walls around window and door openings. Manufactured from extruded polystyrene (XPS), these closers provide superior thermal insulation, ensuring continuous protection against heat loss and helping to improve the energy efficiency of buildings. 

XPS cavity closers are lightweight yet durable, with excellent compressive strength and moisture resistance. They are suitable for a wide range of cavity widths, typically adjustable to fit between 50mm and 250mm cavities, and can be easily trimmed on site for a precise fit. These closers effectively prevent cold bridging, air infiltration, and moisture ingress, contributing to a robust and airtight building envelope. 

Ideal for use in masonry, timber frame, and steel frame constructions, XPS cavity closers are quick and straightforward to install. Their excellent insulation properties and compliance with building regulations make them a preferred choice for modern, energy-efficient construction projects.

Key Characteristics

• Made from extruded polystyrene (XPS) offering superior thermal insulation
• Designed to close cavity gaps around window and door openings
• Lightweight yet strong with excellent compressive strength
• Highly resistant to moisture and water ingress
• Adjustable to fit a wide range of cavity widths, typically 50mm to 250mm
• Easily trimmed on site for a precise fit
• Prevents cold bridging, air leakage, and moisture penetration
• Enhances the energy efficiency and airtightness of buildings
• Suitable for masonry, timber frame, and steel frame construction
• Quick and straightforward to install, saving time on site
• Compliant with current building regulations and standards