Airtight membranes

1 - 10 of 14 products

ISOCELL offers a range of high quality roof underlays, from state of the art monolithic to full UV resistant poly-acrylic, specialised roof membranes for steel roof application, for achieving rain and wind-tight layers.

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TIMBERTEX Vapour Barrier🡪

Timbertex Airtight Control Barrier protects the construction from condensation caused by diffusion. It ensures a controlled and regulated diffusion of water vapour through the thermal insulation. Like all of Isocell’s membranes products it is extremely durable. Due to its strength it can be used as a retaining airtight membrane for blown in insulation. Air-Sealing with: Airstop Flex Adhesive Tape, Airstop Adhesive Tape, Airstop Sealant ‘Sprint’. Please follow our product guidelines.

  • Wind and draught repellent
  • Robust and tear-resistant
  • Recyclable and environmentally safe
  • Airtight and easy to install
  • Prevents spontaneous condensation
  • Controlled vapour diffusion
1.5 m x 50 m - 30 rolls
3 m x 100 m - 20 rolls

AIRSTOP DIVA + FIBER🡪

A moisture-variable vapour barrier for use in the air-tight layer. The functional membrane changes its diffusion resistance depending on the current humidity. During the winter months room atmosphere is generally dryer. The sd-value of the vapour barrier increases. This process results in the penetration of only a little water vapour into the construction and/or into the insulation. In summer, when there is sufficient solar insulation, the relative humidity behind the membrane is higher as a result of reverse diffusion. The water molecules are stored in the membrane. The sd-value sinks, causing more water vapour to escape from the construction and into the rooms and the building element becomes dryer.

1.5 m x 50 m - 24 rolls

AIRSTOP DIVA FORTE Vapour Barrier🡪

Airstop Diva Forte Variable/Intelligent Membrane. Airstop Diva Forte reacts to ambient humidity. During the winter months the pores of the membrane decrease in size, preventing hot, moist, heated air from passing through the membrane into the insulation, therefore ensuring the effectiveness of the insulation and protecting your structure from damage due to excessive moisture. During the summer months (drying-out months), due to ambient humidity and temperatures, the pores of the membrane increase in size, therefore allowing any potential moisture within the structure, to dry back out towards the inside of the dwelling, hence preventing possible mould and rot within the structure. This process is crucial for exterior elements which are non-vapour diffusing or restrict the drying out of moisture to the exterior, such as felt-torched or water proofed flat roofs, pitched roofs with asphalt shingles, and green roofs. The variable vapour permeability of Airstop Diva ranges from 0.2 to 20, offering the highest protection against moisture related damages on the market.Air-Sealing with: Airstop Flex Adhesive Tape, Airstop Adhesive Tape, Airstop Sealant ‘Sprint.

  • Transparent
  • Moisture-variable
  • Flat roofs
  • Construction components in new constructions & refurbishment with impermeable outer shell
3 m x 40 m - 20 rolls
3.2 m x 40 m - 20 rolls

AIRSTOP 1500 Vapour Barrier🡪

AIRSTOP 1500 Vapour Barrier is an extremely tear-resistant vapour barrier for use in the air-tight and vapour-tight layer in roof an wall constructions. When professionally installed it can prevent the ingress of vapour into the construction even where there is very high moisture load. Air-Sealing with: Airstop Flex Adhesive Tape, Airstop Adhesive Tape, Airstop Sealant ‘Sprint’.

1.5 m x 50 m - 30 rolls

FH Fleece Vapour Barrier🡪

A transparent vapour barrier for the airtight layer in roof and wall constructions. In general FH Fleece Vapour Barrier is suitable for use in building components that are non-vapour retardant on the outside. Air-Sealing with: Airstop Flex Adhesive Tape, Airstop Adhesive Tape, Airstop Sealant ‘Sprint’.

1.5 m x 50 m - 30 rolls
3 m x 50 m - 30 rolls

AIRSTOP SD18 Vapour Barrier🡪

A transparent, extremely tear-resistant vapour barrier and airtight layer for wall, roof and ceiling constructions. Easy to handle, its extreme tear resistance allows it to be used in environments that may require additional strength. Its transparency allows easy application as well as identification of fixing points such as rafters, steelwork for following on trades. Air-Sealing with: Airstop Flex Adhesive Tape, Airstop Adhesive Tape, Airstop Sealant ‘Sprint’.

  • Transparent
  • Extremely tear-resistant and easy to install
  • For floor, wall & ceiling
1.5 m x 50 m - 50 rolls
3 m x 100 m - 20 rolls

ÖKO NATUR Vapour Barrier🡪

Öko-Natur is a fabric-reinforced paper vapour barrier and air-tight membrane for roof, wall and ceilings that are vapour permeable towards the outside. The fixed Sd value ensures a regulated release of vapour through the barrier, ensuring the effectiveness of the insulation whilst protecting your structure from damage due to excessive moisture, therefore preventing possible mould and rot. This is an environmentally friendly recyclable fabric reinforced membrane, ideal for eco-friendly builds. Air-Sealing with: Airstop Flex Adhesive Tape, Airstop Adhesive Tape, Airstop Sealant ‘Sprint’. Regulates moisture

  • Suitable for blown-in insulation
  • Tear-resistant
  • Healthy living environment
  • For floor, wall & ceiling
  • Recyclable & eco-friendly
1 m x 50 m - 48 rolls
1.5 m x 50 m - 25 rolls

AIRSTOP VAP Vapour Barrier🡪

Airstop VAP Vapour barrier is a quality vapour barrier sheeting and airtight layer of flame-retardant polyethylene for non-vapour retardant roof, wall and ceiling constructions. Air-Sealing with: Airstop Flex Adhesive Tape, Airstop Adhesive Tape, Airstop Sealant ‘Sprint’.

3 m x 50 m - 35 rolls
4 m x 25 m - 54 rolls
5 m x 25 m - 45 rolls

AIRSTOP DIVA FORTE+ Vapour Barrier🡪

is a moisture-variable vapour barrier for use in the air-tight layer. The functional membrane changes its diffusion resistance depending on the current humidity. During the winter months room atmosphere is generally dryer. The sd-value of the vapour barrier increases. This process results in the penetration of only a little water vapour into the construction and/or into the insulation. In summer, when there is sufficient solar insolation, the relative humidity behind the membrane is higher as a result of reverse diffusion. The water molecules are stored in the membrane. The sd-value sinks, causing more water vapour to escape from the construction and into the rooms and the building element becomes dryer.