Pitched (10–70°) roof underlay.
Fully compliant with BS 5534: 2014 + A2 2018 and an integrated tape version can be installed in all UK wind zones.
Pitched (10–70°) roof underlay.
Fully compliant with BS 5534: 2014 + A2 2018 and an integrated tape version can be installed in all UK wind zones.
Pitched (10–70°) roof underlay.
Fully compliant with BS 5534: 2014 + A2 2018 and an integrated tape version can be installed in all UK wind zones.
A three‑layer breather membrane for pitched‑roof underlay, Permavent APEX combines vapour and air permeability with outstanding water‑resistance and condensation control. It forms a reliable secondary barrier against water ingress and removes the need for dedicated low‑ or high‑level ventilation in most standard roof builds.
Available in three formats
All three meet the same rigorous performance standards and are fully compliant with BS 5534:2014 + A2 2018, suitable for installation across every UK wind zone.
Key Features & Benefits
Whether you choose the convenience of integrated tape or the adaptability of untaped rolls (in either 1 m or 1.5 m widths), Permavent APEX delivers the same high‑performance breather membrane you can trust.
A three‑layer breather membrane for pitched‑roof underlay, Permavent APEX combines vapour and air permeability with outstanding water‑resistance and condensation control. It forms a reliable secondary barrier against water ingress and removes the need for dedicated low‑ or high‑level ventilation in most standard roof builds.
Available in three formats
All three meet the same rigorous performance standards and are fully compliant with BS 5534:2014 + A2 2018, suitable for installation across every UK wind zone.
Key Features & Benefits
Whether you choose the convenience of integrated tape or the adaptability of untaped rolls (in either 1 m or 1.5 m widths), Permavent APEX delivers the same high‑performance breather membrane you can trust.
A three‑layer breather membrane for pitched‑roof underlay, Permavent APEX combines vapour and air permeability with outstanding water‑resistance and condensation control. It forms a reliable secondary barrier against water ingress and removes the need for dedicated low‑ or high‑level ventilation in most standard roof builds.
Available in three formats
All three meet the same rigorous performance standards and are fully compliant with BS 5534:2014 + A2 2018, suitable for installation across every UK wind zone.
Key Features & Benefits
Whether you choose the convenience of integrated tape or the adaptability of untaped rolls (in either 1 m or 1.5 m widths), Permavent APEX delivers the same high‑performance breather membrane you can trust.