225mm Stonecor Insulated Vertical DPC & Fire Barrier - 25mm x 150mm - Cavity Closer

225mm Stonecor Insulated Vertical DPC & Fire Barrier a premium-grade insulated damp-proof course (DPC) designed to close cavities using a returned blockwork detail, while also delivering 30 minutes of fire protection. It’s a complete solution for tackling thermal bridging, moisture ingress, and fire compliance at door and window reveals.

• Insulation size: 25mm x 150mm
• Material:
  • DPC: Polyethylene
  • Insulation: Non-combustible mineral wool faced with aluminium foil

CHARACTERISTICS

• Provides a thermal break at reveals to prevent cold bridging
• Acts as a vertical DPC, restricting moisture tracking from the external leaf
• Delivers 30-minute fire resistance, supporting regulatory compliance
• Reduces risk of condensation, staining, and mould growth
• Easy to cut to length and build into the reveal as construction progresses
• Maintains thermal and fire performance even when lapped
• Single-person fitting; no special fixings required

APPLICATION

• Jambs (vertical sides) of external door and window openings
• In cavity wall constructions using returned blockwork to close the cavity
• Ideal for both residential and commercial builds where fire-rated DPC is required

CERTIFICATION

• BBA Certificate No. 19/5699
• 30-minute fire barrier (Warrington Fire Report No. WF541661-1)