FlameOUT® Block Class A - A2 FR Limited-combustible AVCL - Class A Vapour Control Layer
Verified by manufacturer 1 day ago
Limited-combustible Euroclass A2-s1,d0 (AVCL) air and vapour control layer for use in walls and roofs. Especially suited to high-rise 18 m+ in England and 11 m+ in Scotland and high-risk builds.
Application
FlameOUT® Block Class A is suitable for use in both walls and roofs.
Storage and handling:
- Handle the membrane with care.
- Ensure that the membrane is not punctured or damaged.
- Store the membrane horizontally away from sunlight in a cool, dry sheltered store.
Installation:
- FlameOUT® Block Class A should be continuous over the whole plan area of the structure. All laps should be sealed with Powerbond FR Aluminium Tape and the number of joints should be kept to a minimum by using the full width of the membrane.
- When installed internally, the foil faced side of the membrane should be facing inwards.
- The VCL should be laid loose, flat and without wrinkles, ensuring that the membrane is not creased or folded.
- Cold makes the VCL become less supple. Install in temperatures over 5℃. Do not install in windy conditions.
- Joins should only be made where the membrane is supported.
- A continuous single row of Powerbond FR Aluminium Tape is recommended to seal the overlaps. All joins should be firmly pressed together using a hand-held pressure roller. Tapes should not be installed in temperatures below 5℃.
- Prior to covering the VCL should be thoroughly inspected to verify the integrity of the joining and sealing and to ensure that no damage has occurred during installation.
- Damaged areas must be repaired using patches of FlameOUT® Block Class A. The patch must not extend beyond 150 mm of the damaged area. Fix with Powerbond FR Aluminium Tape.
- Where services and pipework penetrate the AVCL, use Powerbond FR Alumiunium Tape to create airtight seals around each point of entry. To avoid cutting the membrane, it is important that the membrane is folded into the corner and then reinforced by an additional protective layer of membrane.
- Protect FlameOUT® Block Class A from UV exposure. Cover and finish the construction of the VCL installation within a maximum of 3 months.
Overlaps:
- Horizontal overlaps should be 100 mm minimum.
- Vertical overlaps should be 100 mm minimum.
Description
FlameOUT® Block Class A is a non-combustible Euroclass A2-s1,d0 rated air and vapour control layer (AVCL) Independently tested to EN-13501-1 this vapour barrier is especially suited to both high rise, 18 m+ in England and 11 m+ in Scotland and safety critical builds.
When used within wall and roof installations FlameOUT® Block Class A prevents moisture within the building's warm air from reaching the insulation layer and forming interstitial condensation.
FlameOUT® Block Class A has a glass reinforcement scrim which provides excellent tensile strength in wall and roof installations. The aluminium layer has a special protection coating to protect the aluminium layer from corrosion.
FlameOUT® Block Class A contributes to both BS 9250 for the airtightness in ‘a well-sealed ceiling’ and BS 5250 aiding the control of condensation within a roof space.
Features and benefits:
- Euroclass A2-s1,d0 limited-combustible AVCL.
- Independently tested to EN 13501-1
- Compliant for use in high-rise and high-risk buildings.
- Compliant to Approved Document B
- Suitable for wall and roof applications.
- High-performance protection against moisture.
- W1 rating for water tightness.
- Excellent tensile strength and nail tear resistance.
- Suitable for use as a damp proof membrane.
- CE approval.
General information
Color | White Silver |
Finish | Foil |
Material | Polyethylene |
Shape | Other Guidance for specification option: Roll. |
Length | 50000 mm |
Width | 1500 mm |
Uniclass | |
CAWS | H31/45 Air and vapour control membrane H31/261 Air and vapour control membrane H30/30 Air and vapour control membrane H30/261 Air and vapour control membrane J31/330 Air and vapour control layer J21/395 Air and vapour control layer J41/395 Air and vapour control layer J42/395 Air and vapour control layer P10/60 Air and vapour control layer P10/310 Air and vapour control layer H92/780 Air and vapour control layer |
Specification data - Glass fibre membranes
Weight | 155 g/m². |
Performance characteristics | To EN 13984. |
Width (minimum) | 1500 mm. |
Colour | White / silver. |
Laminates or surface treatments | Aluminium foil. |
Tensile strength | To EN 12311-1, >1200 N/50 mm (MD); >1000 N/50 mm (CD). Manufacturer guidanceNominal. |
Tear strength | To EN 12310-1, >200%. Manufacturer guidanceNominal. |
Water vapour resistance | 20 000 MNs/g. Manufacturer guidanceNominal. |
Water vapour transmission | To EN ISO 12572 (C), 4000 m. Manufacturer guidanceNominal. |
Reaction to fire | To EN ISO 11925-2, A2-s1,d0. |
Roll length | 50 m. |
Roll weight | 13.5 kg. |
Sustainability data
Material | Polyethylene |