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OMEGA ALUBIT SK Vapour Barrier

OMEGA ALUBIT SK Vapour Barrier
Cold self-adhesive vapour barrier sheeting and airtight layer for roof constructions. When installed correctly it prevents the penetration of water vapour into the construction. OMEGA ALUBIT SK Vapour Barrier can also be used for a limited time as a temporary seal.

Available dimensions

Article number Roll width Roll length Rolls / Pallet Total area Inquiry List
3OMAB 1.08 m 25 m 24 rolls 648 m²

Field of application

  • For airtight roof constructions
  • Temporary cover for up to max. 4 weeks
  • For use on trapezoidal steel sheets and woodwork
  • In accordance with technical regulations on seals (flat roof directive) suitable as vapour barrier

Advantages

  • Quick and easy to use
  • Vapour-tight
  • Resilient
  • Full-surface self-adhesion
  • Tear-proof
  • Full-surface adhesive coating to ensure adhesion to substrate during construction phase
  • CE marking according to DIN EN 13970

Product data

Cold self-adhesive vapour barrier sheeting and airtight layer for roof constructions. When installed correctly it prevents the penetration of water vapour into the construction. OMEGA ALUBIT SK Vapour Barrier can also be used for a limited time as a temporary seal.
Material composition
Aluminium composite foil with reinforcement of glass fibre. Cold bitumen coating.
Thickness
0.6 mm
Colour
Light grey
Weight
650 g/m²
Weight per unit area
EN 1849-2
sd-value
1500 m
sd-value
≥
Elongation - lengthwise
≥ 2 %
Elongation - crosswise
≥ 2 %
Elongation
EN 12311-1
Tensile strength - lengthwise
≥ 800 N / 50 mm
Tensile strength - crosswise
≥ 800 N / 50 mm
Tensile strength
EN 12311 - 1
Shearing resistance of the connection joints
≥ 200 N / 50 mm
Storage
cool and dry
Watertightness Method B
passed
Fire performance
E
Fire performance
EN 13501_1 / EN 11925_2

Processing guideline

Quality of substrate

Surfaces must be even, smooth, clean and free from dust, oil and grease. Concrete substrates must be even, smooth and set sufficiently. Use on rough concrete surfaces can result in damage to the aluminium composite. Depending on the condition of the substrate and the requirements, the substrates can be pre-treated with UNI XL Primer Spray or UNI Primer Spray.
For a bonded roof construction (all layers bonded) it is absolutely necessary to use UNI XL Primer Spray or UNI Primer Spray on concrete and wooden substrates. This also applies when OMEGA ALUBIT SK Vapour Barrier is pulled up high on the parapet.
Longitudinal and transverse butt joints must be carried out with overlaps of min. 8 cm.

Installation at: air temperature + 5 °C / substrate temperature + 5 °C
Quality of substrate

Joints / upstands an edges

Overlaps, joints and edges must be carefully carried out and sealed airtight. The OMEGA ALUBIT SK Vapour Barrier must be continued at least to the upper edge of the thermal insulation and sealed airtight.

Note

OMEGA ALUBIT SK Vapour Barrier may also be used for a limited period as temporary protection during construction. When greater differences in temperature or high stress on the membrane due to humidity levels are anticipated, joints must be additionally secured with AIRSTOP ULTRA. Similarly, lengthwise, after max. 12 m there must be a joint with overlap + OMEGA AB Aluminium Tape. In Austria, for horizontal ceilings and use category K2 and K3 the vapour barrier must meet at least E-ALGV-4, E-KV-4, E-KV-5 (OMEGA ALUBIT SK Vapour Barrier is not possible, see ÖNORM 3691 Tab. 2). This can be avoided with a minimum 2 % slope (after deflection) of the structural ceiling.

The normative requirements in the respective country must be observed!