What is Cavity Wall Insulation?

Definition

Cavity wall insulation involves filling the gap between the inner and outer walls of a building to reduce heat loss. It can be installed as a full-fill or partial-fill, depending on wall thickness, thermal performance requirements, and the chosen product.

Benefits

• Energy Efficiency: Reduces heat loss through walls and improves U-values.
  
• Condensation Control: Helps manage moisture within the cavity, preventing damp and mould.
• Flexible Options: Can be retrofitted or installed in new builds

Applications

• Full-fill boards: ECO/CT boards fill the cavity for maximum thermal performance.
  
• Partial-fill boards: ECO/CW boards leave a small air gap, ideal for retrofit situations or thinner walls.
  
• Works for both residential and commercial properties, and is compatible with VCL membranes if needed.
  

Best Practice Tips

• Ensure boards fit tightly between the inner and outer leaves.
  
• Check moisture compatibility for older buildings.
  
• Combine with drywall or plasterboard finishes for added insulation and a smooth interior surface.