£49.99
In stock
9963 in stock
Protect pitched roofs and insulation with STROTEX-V 135g/m² Breathable Roofing Membrane, a strong, lightweight and highly breathable roof underlay designed to provide reliable secondary weather protection.
Supplied in a generous 50m x 1m roll, STROTEX-V provides approximately 50m² of coverage before allowing for overlaps, making it an excellent choice for new roofs, extensions, refurbishments and other pitched roofing projects.
The membrane is designed to allow water vapour to pass through the roof construction while helping prevent wind-driven rain, snow and dust from entering the roof space.
STROTEX-V is a diffusion-open roof membrane, allowing moisture vapour generated inside the building to escape through the roof construction.
This high level of breathability can help reduce the risk of condensation building up around insulation and structural roof timbers, supporting a healthier and more effective roofing system.
At 135g/m², STROTEX-V provides an excellent balance between strength, weight and ease of installation.
STROTEX-V Breathable Membrane is suitable for a wide range of roofing and building applications, including:
Its versatility makes it an excellent choice for both professional roofing contractors and DIY roofing projects.
Although the primary roof covering provides the main weather protection, a quality breathable roofing underlay provides an important secondary barrier underneath the roof tiles or slates.
STROTEX-V helps protect the roof void against:
This additional layer of protection helps keep the roof structure and insulation protected if moisture penetrates beneath the main roof covering.
One of the main benefits of STROTEX-V is its high water vapour permeability.
Moisture generated within a property can travel into the roof construction. A breathable membrane allows this vapour to pass through rather than becoming trapped within the roof structure.
This can help minimise the risk of:
For customers searching for a breathable roof membrane, vapour permeable roofing underlay or breather membrane for pitched roofs, STROTEX-V provides a dependable solution.
With a weight of 135g/m², STROTEX-V offers greater substance and durability than many lighter entry-level roofing membranes while remaining lightweight enough for straightforward handling and installation.
The membrane is manufactured from polypropylene and uses a multi-layer construction designed to provide strength, waterproofing and excellent vapour permeability.
This makes it a strong choice for customers wanting a 135gsm breathable roofing membrane suitable for everyday residential and trade roofing applications.
Each roll measures 50 metres long by 1 metre wide, providing approximately 50 square metres of membrane before allowing for laps and overlaps.
The convenient 1m width makes the membrane easier to handle on the roof while the long 50m roll provides excellent coverage for larger roofing projects.
STROTEX breathable roofing membranes can be used as roof underlay on both warm and cold pitched roof constructions.
Installed beneath tiles or slates, the membrane provides an additional weather-resistant layer while allowing moisture vapour to escape from within the roof structure.
This makes STROTEX-V suitable for modern insulated roofing systems as well as traditional pitched roof applications.
Despite its durable construction, STROTEX-V is lightweight and easy to handle, making installation quicker and more convenient.
For best performance, the membrane should be:
Always ensure the completed roof construction complies with the relevant building regulations and roofing specifications.
A breathable roofing membrane should not be confused with an internal vapour control layer or vapour barrier.
STROTEX-V is designed primarily as an external roofing underlay beneath the roof covering. It allows water vapour to escape while helping prevent external moisture from entering the roof structure.
This makes it especially useful in insulated pitched roofing systems where moisture management and ventilation are important.
Choose STROTEX-V Breathable Roofing Membrane 50m x 1m – 135g/m² for a strong, lightweight and vapour-permeable roof underlay designed to provide dependable secondary weather protection for pitched roofing systems.
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| Shipment method | Estimated delivery time | Shipment cost |
| Standard | 3-5 business days | As specified at checkout |
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