Visqueen Class B FR Vapour Check 4m x 50m

Visqueen Class B FR Vapour Check is a flame-retardant polyethylene air and vapour control layer (AVCL) designed for use in walls, floors, and roofs. Suitable for buildings over 18m, it offers enhanced vapour control, airtightness, and fire performance.

Key Features

• Fire-rated: Class B-s1, d0
• Helps reduce condensation and improve airtightness
• Suitable for all building types – including high-rise
• Wide roll format – fewer joints, faster installation
• Third-party tested and certified

Typical Uses

• AVCL in residential and commercial buildings
• Vapour barrier for walls, roofs, and floors
• Ideal for fire-regulated and high-rise developments

Installation Tips

• Install on warm side of insulation
• Lap by at least 75mm (100mm where specified)
• Use FR Double Sided Vapour Tape on substrates
• Seal all joints with FR Single Sided Vapour Tape
• Tape coverage must remain under 11% of membrane area
• Secure using internal linings (e.g. plasterboard)