Speedline Breather Membrane

Speedline Breather Membrane is a high performance breathable (vapour permeable) underlay for use in both vented and nonvented cold and warm pitched roofs.

Speedline Breathable Membrane is especially suitable for use in supported warm roof specifications where the insulation is located along the rafter line.

Independent Approval
Speedline Breathable Membrane has been fully assessed by the British Board of Agrement (Certificate No 07/4461) for use as an unsupported or fully supported underlay for tiled or slated pitched roofs.  It has also been assessed for use as an underlay in energy efficient non-ventilated cold pitched roof systems.

Description
Speedline Breathable Membrane is a thermally bonded UV stabilised laminate incorporating a vapour permeable
film. The product resists penetration by liquid water yet allows the passage of water vapour.

Performance Benefits
• Low vapour resistance - defined by BS 5250:2002 as a vapour permeable underlay and suitable for use in energy efficient non ventilated cold pitched roof systems
• Breathable - suitable for warm roof applications
• Strong - three layer construction resists tearing
• Water resistant - achieves W1 classification when tested to BS EN 1928:2001 Resistance to water penetration
• Lightweight - easy to transport and handle
• Flexible - even at low temperatures
• Clean to use and easy to cut
• Durable - no performance deterioration at highest and lowest UK temperatures.

Durability
Speedline Breathable Membrane will be virtually unaffected by normal conditions found in the roof space and will have a life comparable with that of the roof covering.

Uses
Speedline Breathable Membrane is a breathable pitched roof underlay designed to:
• Provide a barrier to minimize the wind uplift load acting on the slates or tiles.
• Provide a secondary barrier to the ingress of wind-driven rain, snow and dust.
• Facilitate the transport of any moisture penetrating the primary roof covering into the roof drainage system.
• Provide temporary weather protection before the installation of the primary roof covering.