Airtight Vapour Control Layers (AVCL)

Vapour Permeable Membranes (VPM)

Membranes & Tapes

The 4m x 50m Vapour Barrier Roll, with 125mu thickness, is ideal for blocking moisture in walls, floors and roofs, delivering up to 200m2 coverage. Coming in a neutral green, it's crafted in the UK from recyclable polyethylene and meets EN 13984 standards. Perfect for construction and renovation, it works across various applications.

Vapour Barrier Roll

The ideal vapour-permeable timber frame wall membrane.

Water resistant (W1) and lightweight vapour permeable wall 
membrane, suitable for use as the secondary protection layer 
in SFS, timber, CLT and masonry wall systems. Membrane 
should be fixed directly over supporting sheathing board, 
insulation or blockwork.

• Highly permeable to water vapour (sd-value: 0.01 m)
• Airtight / windtight and highly water resistant (>W1)
• Enhances the airtightness of the construction
• Lightweight, flexible and easy to install
• Should be surface applied, fixed directly to sheathing ply /OSB, 
insulation or blockwork
• Established & trusted long-term performance
• Also suitable for steel-frame and concrete structures

Timber Frame Wall Membrane 1.4 x 100m

AVCL which boosts your thermal efficiency.

A 100% airtight vapour control layer (AVCL) with very high 
vapour resistance and low emissivity reflective surface. 
Significantly boosts thermal performance when used with a 
services void/batten space. Suitable for use in SFS, timber, CLT 
and masonry wall systems, pitched and flat roofs.
Chlorine resistant.

• Highly vapour resistant
• Airtight and water resistant
• CE-conformity for plastic and rubber vapour control layer (EN 
13984)
• Reflects ca. 95% of radiant heat
• Reduces heat loss by increasing R-value of the airspace to 0.75m2
k/w
• Good mechanical strength
• Reaction to Fire: Class E
• Considerably reduces risk of condensation

Superior Thermal Airtight Vapour Barrier 1.5 x 50m

AVCL with variable vapour resistance.

A 100% airtight vapour control layer with extreme variable 
vapour resistance which adapts to changes in humidity. 
Provides efficient drying-out capacity for structures with 
built-in moisture. Suitable for roof, wall and floor elements in 
projects of low to medium moisture classification.

• Prevents structure damage and loss of insulation efficiency 
by smartly adapting to various moisture conditions and 
regulating the humidity in building elements
• Reduced drying out time
• Durability, health and longevity of buildings
• Greater energy efficiency
• Additional drying capacity for unplanned humidity infiltration
• Enhanced interior comfort

Moisture-Adaptive Vapour Barrier 1.5 x 50m

Strong AVCL for optimal airtightness in roofs, walls and floors.

A dedicated air barrier with 100% airtightness and low vapour resistance, which allows rapid drying-out of damp wall elements. Primary function is to improve energy-efficiency by reducing convective heat losses through a roof, wall or floor element.

• Limited vapour transmission 
• Airtight and water resistant
• CE-conformity for plastic and rubber vapour control layer (EN 13984)
• Superior mechanical strength
• Reaction to Fire: Class E
• Lightweight - easy to install
• Reduces convective heat losses
• Reduces convective vapour transfer
• Reduces risk of trapped moisture in the insulation

Strong Thermal Vapour Barrier 1.5 x 50m

AVCL which boosts your thermal insulation.

A 100% airtight vapour control layer (AVCL) with very high 
vapour resistance and low emissivity reflective surface. 
Significantly boosts thermal performance when used with a 
services void/batten space. Suitable for use in SFS, timber, CLT 
and masonry wall systems, pitched and flat roofs.
Chlorine resistant.

• Highly vapour resistant
• Airtight and water resistant
• CE-conformity for plastic and rubber vapour control layer (EN 13984)
• Reflects ca. 95% of radiant heat
• Reduces heat loss by increasing R-value of the airspace to 0.67m2
k/w
• Superior mechanical strength
• Reaction to Fire: Class E
• Considerably reduces risk of condensation into the insulation
• Reduces convective heat losses

Thermal Airtight Vapour Barrier 1.5 x 50m

Airtight Vapour Control Layer for use within the internal lining of roof, ceiling
 and wall systems. 

An airtight vapour control layer (AVCL) with Class A2 fire 
performance and very high vapour resistance. This internal 
membrane has a low emissivity reflective surface, which 
boosts thermal performance when used with a services void/
batten space. Satisfies the fire regulations for use in external 
walls but may also be used as an AVCL in pitched and flat 
roofs. Suitable for buildings of any humidity classification, 
residential or commercial and from single-storey to hi-rise.

• Class A2, Fire Retardant
• System Classification: DuPont™  AirGuard®   A2 FR AVCL with DuPont™  AirGuard®  FR System tape (1310FR)
• Thermal benefit: low emissivity/reflective surface
• Tested and classified for free-span, on mineral wool slab, gypsum plasterboard or fibre cement board
• Suitable for all building types, heights and proximities
• A fire retardant AVCL with European Fire Classification A2.
• A full system test with AirGuard®  FR System tape has been successfully tested according EN 13501-1

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Airtight Vapour Control Layers (AVCL)

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