Novia Class B-s1,d0 VariCheck FR AVCL
Our Fire Classification B-s1,d0*, variable AVCL suitable for high rise applications
Product Overview
Novia® VariCheck FR is a Class B* flame resistant, variable vapour check barrier for use as an internal Air & Vapour Control Layer (AVCL). The material meets BS EN 13984 and is CE approved. Novia® VariCheck FR complies to EN 13501-1 Fire Classification B-s1,d0*. Novia® VariCheck FR is suitable for use in insulated wall or roof applications where low moisture vapour resistance is required. Also suitable for floor applications where a fire rating is not required. Novia® VariCheck FR is a low cost fire rated solution, for use within both standard and high rise constructions where a vapour check membrane is required. Novia® VariCheck FR is a variable vapour check membrane, achieving sd values between 0.4m - 3.2m. The permeability of the membrane varies seasonally with changes to local humidity levels, as the membrane is less permeable in colder months, and more permeable in warmer months. Novia® VariCheck FR is available in 1.5m x 50m roll sizes. The product is milky white in colour, except for 150mm overlap lines.
*Valid for substrates with fire class A2-s1,d0 or A1 such as 12mm plasterboard, with no cavity between product and substrate. Product tested to EN 13501-1.
For projects that also require a fire rated breather membrane which complies to EN 13501-1, we also offer Novia® FR Breather and Novia® UV Facade FR. Both products have a B-s1,d0 Fire Classification and are approved for use in high rise applications. See datasheets for more product specific information.
Novia® VariCheck FR can be found on NBS Chorus and NBS Source software packages. Full information can be found for NBS specification with the table below. The links will open a pop up window with full specification information.
Full installation and technical details can be found on the datasheets available for download below.
Key Features
- 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 FR Breather Membrane for a full Class B installation
- Novia UV Facade FR Breather Membrane for a full Class B installation
Download Links
Installation Tips
All laps and edges should be fully sealed and taped. For air & vapour control layer installations, we recommend using a minimum 30mm width Novia® Double Sided Butyl Tape for all overlaps and around framework. To ensure a fully airtight seal, use a single sided tape, such a Novia® Aluminium Foil Tape or Novia® Metallised BOPP Tape to keep the overlap securely in place. Any mechanical fixings, must penetrate through the butyl tape to seal around any puncture created by the fixings. Where additional sealing is required, for example internal corners, floor sections or window reveals, the use of Novia® AirSeal 310 FR should be considered.