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Original price was: £104.88.£99.64Current price is: £99.64. Inc VAT
Free Delivery on Novia orders over £1200 (incl VAT)
Original price was: £104.88.£99.64Current price is: £99.64. Inc VAT
Free Delivery on Novia orders over £1200 (incl VAT)
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Novia VC2 is a reinforced Air and Vapour Control Layer (AVCL) designed specifically for insulated wall, roof and floor applications, particularly within timber-framed dwellings. Engineered with a controlled Sd value, the membrane combines vapour control with an additional air leakage barrier to help manage moisture movement and reduce unwanted heat loss caused by uncontrolled convection through the building envelope.
Novia VC2 is suitable for use as part of an airtight and vapour-resistant building system, working alongside compatible Novia breather membranes and the appropriate Novia sealing tapes and accessories.
The membrane is CE approved and CPR compliant and is also available for specification through NBS Chorus and NBS Source.
Supplied as a 1.5m x 50m roll, each roll provides 75m² nominal coverage.
Key benefits include:
Novia VC2 is designed for use within insulated building elements requiring both air leakage control and vapour control.
Typical applications include:
The membrane should be incorporated into the construction according to the required vapour control and airtightness strategy.
An Air and Vapour Control Layer, commonly abbreviated to AVCL, combines two important building envelope functions.
It helps control:
Air movement
by restricting uncontrolled air leakage through the building fabric.
It also helps control:
Moisture vapour movement
by managing the passage of naturally occurring water vapour through insulated building elements.
Combining these functions within a continuous membrane can help create a more controlled building envelope when the AVCL is correctly detailed and sealed.
Everyday activities within occupied buildings produce moisture vapour.
This vapour can migrate through the building fabric and potentially reach colder areas within an insulated wall, roof or floor.
A Vapour Control Layer is used to manage the movement of this naturally occurring moisture vapour through the building envelope.
Novia VC2 has an engineered Sd value specifically intended for use within appropriate insulated construction.
The complete building element should still be designed according to its individual moisture and condensation control requirements.
Novia VC2 incorporates an engineered Sd value to provide the required level of vapour control for its intended applications.
Sd value is used to describe a membrane’s resistance to water vapour diffusion in terms of an equivalent air layer thickness.
Novia has engineered the VC2 specification specifically for use within insulated:
particularly within timber-framed dwellings.
The exact numerical Sd value should be taken from the current Novia technical datasheet where required for project calculations or specification.
In addition to its vapour control function, Novia VC2 performs as an air leakage barrier.
This helps prevent uncontrolled air movement through the building envelope.
Unwanted convection flows can carry heated air through gaps and discontinuities within a construction, potentially contributing to unnecessary heat loss.
A correctly installed and continuously sealed VC2 membrane helps control these unwanted air movements.
By providing an air leakage barrier, Novia VC2 can help reduce heat losses associated with unwanted convection flows through the building envelope.
For this function to perform effectively, continuity of the membrane is important.
Particular attention should therefore be given to:
Novia VC2 is a reinforced membrane, providing a robust AVCL solution for appropriate insulated building applications.
The reinforced construction is particularly useful during installation where the membrane needs to be positioned, fixed and sealed across timber frame and other compatible construction details.
Novia VC2 is engineered specifically with applications such as insulated timber frame walls in mind.
Within an appropriately designed timber frame wall, the membrane provides the internal air and vapour control function.
A compatible Novia breather membrane can then be used within the appropriate external side of the construction.
This creates a system designed to provide vapour resistance and airtightness internally while allowing the external membrane layer to perform its specified breathable function.
VC2 can also be used within appropriate insulated roof applications.
The membrane provides air and vapour control as part of the insulated roof build-up, helping manage moisture vapour movement while restricting uncontrolled air leakage.
The exact position and installation method should follow the requirements of the complete roof design.
Novia VC2 is also designed for insulated floor applications.
This makes VC2 a versatile AVCL option that can be incorporated across multiple insulated elements of a timber-framed dwelling.
Correct continuity between wall, roof and floor AVCLs can be particularly important where an airtight building envelope is required.
Novia recommends using VC2 in combination with its breather membrane range to provide an airtight and vapour-resistant system.
The products perform different functions within the construction.
Novia VC2 AVCL:
Novia Breather Membrane:
The correct combination should be selected according to the roof or wall design.
Correct sealing is essential to maintaining the integrity of an Air and Vapour Control Layer.
Novia recommends using its compatible sealing products to maintain the barrier across:
The appropriate product should be selected according to the type of joint and the relevant Novia installation guidance.
Novia Double Sided Butyl Tape can be used within membrane joints and overlaps to help create an airtight and vapour-resistant installation.
The butyl tape provides high-performance jointing and sealing between compatible membrane surfaces.
It should not be relied upon as a load-bearing fixing, and the membrane should be mechanically fixed where required by the installation specification.
Novia Metallised BOPP Tape can be used to provide a final secure seal across compatible VC2 membrane overlaps.
The tape provides high adhesion and additional barrier integrity at membrane joints.
Where specified, it can be used alongside Novia Double Sided Butyl Tape as part of a securely sealed overlap.
A suitable Novia Aluminium Foil Tape can also be used for compatible VC2 sealing applications.
The appropriate sealing tape should be selected according to the particular construction and Novia installation instructions.
Some construction details can be difficult to seal effectively using tapes alone.
For these applications, Novia AirSeal 310 is available for:
This allows continuity of the air and vapour control layer to be maintained around more complicated construction details.
An AVCL is most effective when it creates a continuous barrier throughout the building envelope.
A high-performance membrane can be compromised if air or vapour is able to bypass it through unsealed:
For this reason, Novia recommends appropriate tapes and sealing products to help maintain complete barrier integrity throughout the service life of the installation.
Novia VC2 is:
The membrane should be installed according to the applicable Novia technical information and the requirements of the complete construction.
Novia VC2 is available through:
This allows architects, designers and specifiers to incorporate the product into appropriate building specifications using established NBS specification platforms.
| Specification | Details |
|---|---|
| Product | Novia VC2 |
| Product Type | Air & Vapour Control Layer (AVCL) |
| Construction | Reinforced Membrane |
| Roll Width | 1.5m |
| Roll Length | 50m |
| Nominal Coverage | 75m² |
| Vapour Control | Yes |
| Air Leakage Control | Yes |
| Sd Value | Engineered for Intended Applications |
| Insulated Walls | Suitable |
| Insulated Roofs | Suitable |
| Insulated Floors | Suitable |
| Timber-Framed Dwellings | Suitable |
| CE Approved | Yes |
| CPR Compliant | Yes |
| NBS Chorus | Available |
| NBS Source | Available |
| Compatible Jointing Tape | Novia Double Sided Butyl Tape |
| Compatible Final Sealing Tape | Metallised BOPP or Suitable Aluminium Foil Tape |
| Additional Sealant | Novia AirSeal 310 |
Novia VC2 is a reinforced Air and Vapour Control Layer designed to manage air leakage and moisture vapour movement within insulated wall, roof and floor construction.
Each roll measures:
1.5m wide x 50m long
A 1.5m x 50m roll provides:
75m² nominal coverage
Actual usable coverage will be lower after allowing for overlaps, cutting and installation wastage.
AVCL stands for Air and Vapour Control Layer.
It describes a membrane designed to control both air leakage and the movement of moisture vapour through the building envelope.
Yes. Novia describes VC2 as a reinforced airtight vapour check membrane.
Yes. VC2 has an engineered Sd value designed specifically for its intended insulated wall, roof and floor applications.
The numerical value should be taken from the current Novia technical datasheet where required for calculations or specification.
Novia VC2 is designed to perform as an air leakage barrier as part of an appropriately sealed installation.
Membrane laps, edges, penetrations and junctions must be correctly sealed to maintain barrier integrity.
Yes. Vapour control is one of its primary functions.
VC2 helps manage the movement of naturally occurring moisture vapour through insulated building elements.
Yes. Novia specifically identifies VC2 for use in insulated wall, roof and floor applications in timber-framed dwellings.
Yes. It is suitable for appropriate insulated wall applications.
Yes. It is designed for appropriate insulated roof applications.
Yes. Novia VC2 is also designed for appropriate insulated floor applications.
VC2 performs as an air leakage barrier, helping prevent unwanted convection flows through the building envelope and therefore helping reduce heat loss associated with uncontrolled air leakage.
The overall thermal performance will depend on the complete building construction.
Novia advises using Double Sided Butyl Tape together with a compatible final sealing tape such as Metallised BOPP Tape or Aluminium Foil Tape, according to the installation requirements.
Novia recommends AirSeal 310 for difficult areas or where additional sealing support is required in appropriate applications.
Yes. Novia recommends using VC2 in combination with an appropriate Novia breather membrane to create the required air and vapour control system within the complete construction.
Yes. The supplied specification states that Novia VC2 is CE approved and CPR compliant.
Yes. Novia VC2 is available through both NBS Chorus and NBS Source.
No. VC2 is an Air and Vapour Control Layer designed to provide vapour resistance and air leakage control.
A breather membrane performs a different function and is generally positioned within the appropriate external part of an insulated construction.
No. VC2 is specifically designed as an Air and Vapour Control Layer for insulated wall, roof and floor applications.
Where a dedicated Damp Proof Membrane is required, a product specifically designed and specified as a DPM should be selected.
Each roll provides 75m² nominal coverage.
As a simple guide:
Additional material should be allowed for overlaps, cutting and installation wastage.
Novia VC2 AVCL is a technologically advanced reinforced membrane designed for air leakage and vapour control within insulated walls, roofs and floors, particularly in timber-framed dwellings.
Its engineered vapour resistance helps manage the movement of moisture vapour through the building envelope, while its additional air leakage barrier function helps restrict unwanted convection flows and associated heat loss.
Novia recommends combining VC2 with appropriate Novia breather membranes, Double Sided Butyl Tape and Metallised BOPP or Aluminium Foil sealing tapes, with Novia AirSeal 310 available for difficult sealing details.
Supplied as a 1.5m x 50m roll providing 75m² nominal coverage, Novia VC2 provides a versatile solution for creating a continuous air and vapour control layer across compatible insulated building applications.
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