Novia Class B-s1,d0 VariCheck FR AVCL - 1.5m x 50m

• Roll size: 1.5m x 50m
• EN 13501-1 Fire Classification B-s1, d0*
• Suitable for use in high rise applications under relevant sections of Fire Safety: Approved Document B
• CE compliant to EN 13964
• For application that require higher moisture vapour permeability
• Variable sd vapour check membrane
• Minimises interstitial condensation

Novia Class B‑s1,d0 VariCheck FR AVCL is a variable vapour control layer specially designed for internal use in walls and roofs, delivering reliable performance in both standard and high‑rise buildings. With a B‑s1,d0 fire rating to EN 13501‑1, it’s suitable for applications requiring enhanced fire safety . This membrane dynamically adjusts its vapour resistance (sd 0.4–3.2 m) in response to humidity, reducing the risk of interstitial condensation throughout the year. It maintains airtightness while supporting seasonal moisture management, and is also suitable for floor applications where fire rating is not required. Available in 1.5 m × 50 m rolls, VariCheck FR is a cost‑effective and compliant solution for improving indoor air quality, thermal performance, and fire safety in a variety of building systems.

How does it help prevent condensation?

Its variable permeance adapts to humidity changes—more open in summer, tighter in winter—helping manage internal moisture and reduce interstitial condensation

What does “variable vapour check” mean?

It adjusts its vapour permeability seasonally—ranging from sd 0.4 m to 3.2 m—to help reduce condensation risks by allowing more moisture transfer in warm weather and less in cold conditions