Product Details

SAMAC Cavity Closers are high-performance insulated profiles designed to seal cavities around window and door openings, preventing cold bridging, moisture ingress, and air leakage in masonry, timber frame, and steel frame construction. Manufactured using rigid XPS insulation with a durable uPVC profile, these closers provide an effective thermal and damp barrier, helping meet current UK building regulations.

Engineered for versatility on site, SAMAC multi-width cavity closers accommodate varying cavity sizes—typically ranging from 50mm to 150mm—making them ideal for both new build and refurbishment projects. The rigid extrusion allows for second-fix installation, while integrated cut guides ensure fast, accurate fitting. By closing cavities effectively, they reduce condensation risk and improve overall building performance.

Key Features

• Rigid XPS insulation core with durable uPVC outer profile
• Multi-width design to suit varying cavity sizes (approx. 50–150mm)
• Standard 2.4m lengths for consistent installation
• Excellent thermal performance (low thermal conductivity)
• Prevents cold bridging around openings
• Integrated cut-to-size guides for quick installation
• Suitable for masonry, timber frame, and steel frame systems

Benefits

• Improves thermal efficiency and reduces heat loss
• Minimises risk of condensation, damp, and mould
• Ensures compliance with UK building regulations
• Speeds up installation with easy-fit design
• Versatile solution for new builds and retrofit work
• Provides long-term durability and resistance to decay