Leto 145gsm Breathable Roofing Membrane 1m x 50m
Product Description
Product Description
Leto 145gsm Breathable Roofing Membrane 1m x 50m
The Leto 145gsm Breathable Roofing Membrane is a durable, vapour-permeable roofing underlay designed to provide additional protection against wind-driven rain and moisture beneath roof tiles and slates.
Manufactured using a strong three-layer polypropylene construction, this breathable membrane combines water resistance with excellent vapour permeability. It allows moisture vapour to escape from the roof structure, helping to reduce the risk of condensation while providing a secondary protective barrier beneath the roof covering.
With a weight of 145gsm, Leto roofing membrane offers a balance of strength, flexibility and ease of handling. Suitable for both warm and cold pitched roof constructions, it is an effective choice for new roofing installations, roof replacements and refurbishment projects.
Supplied in a 1m x 50m roll, the membrane provides 50m² of nominal coverage before allowing for overlaps and wastage.
Key Features & Benefits:
- Breathable construction – Allows water vapour to escape, helping reduce condensation within the roof structure.
- Water-resistant membrane – W1 classification provides protection against water penetration.
- Three-layer polypropylene design – Combines strength, flexibility and durability.
- 145gsm weight – Robust yet lightweight enough for convenient handling and installation.
- Suitable for warm and cold roofs – Designed for a range of ventilated and unventilated pitched roofing systems, subject to specification.
- Wind uplift resistance – Suitable for wind zones 1–5 when installed with the appropriate lap detailing.
- 1m x 50m roll – Provides 50m² of material before overlaps.
Typical Applications
- Pitched roofs beneath tiles and slates
- New-build roofing projects
- Roof replacements and refurbishment
- Warm and cold roof constructions
- Suitable ventilated and unventilated roofing systems
- Timber rafter roof constructions
Application Advice
Leto 145 Breathable Roofing Membrane should be installed beneath a suitable pitched roof covering, following the manufacturer's instructions for overlaps, fixing, ventilation and detailing.
Ventilation requirements depend on the complete roof construction. Always check the relevant roof design and manufacturer's guidance before installation.
This product is not intended to replace a mineral-finished roofing felt or torch-on waterproofing system on a flat roof.
Product Description
Leto 145gsm Breathable Roofing Membrane 1m x 50m
The Leto 145gsm Breathable Roofing Membrane is a durable, vapour-permeable roofing underlay designed to provide additional protection against wind-driven rain and moisture beneath roof tiles and slates.
Manufactured using a strong three-layer polypropylene construction, this breathable membrane combines water resistance with excellent vapour permeability. It allows moisture vapour to escape from the roof structure, helping to reduce the risk of condensation while providing a secondary protective barrier beneath the roof covering.
With a weight of 145gsm, Leto roofing membrane offers a balance of strength, flexibility and ease of handling. Suitable for both warm and cold pitched roof constructions, it is an effective choice for new roofing installations, roof replacements and refurbishment projects.
Supplied in a 1m x 50m roll, the membrane provides 50m² of nominal coverage before allowing for overlaps and wastage.
Key Features & Benefits:
- Breathable construction – Allows water vapour to escape, helping reduce condensation within the roof structure.
- Water-resistant membrane – W1 classification provides protection against water penetration.
- Three-layer polypropylene design – Combines strength, flexibility and durability.
- 145gsm weight – Robust yet lightweight enough for convenient handling and installation.
- Suitable for warm and cold roofs – Designed for a range of ventilated and unventilated pitched roofing systems, subject to specification.
- Wind uplift resistance – Suitable for wind zones 1–5 when installed with the appropriate lap detailing.
- 1m x 50m roll – Provides 50m² of material before overlaps.
Typical Applications
- Pitched roofs beneath tiles and slates
- New-build roofing projects
- Roof replacements and refurbishment
- Warm and cold roof constructions
- Suitable ventilated and unventilated roofing systems
- Timber rafter roof constructions
Application Advice
Leto 145 Breathable Roofing Membrane should be installed beneath a suitable pitched roof covering, following the manufacturer's instructions for overlaps, fixing, ventilation and detailing.
Ventilation requirements depend on the complete roof construction. Always check the relevant roof design and manufacturer's guidance before installation.
This product is not intended to replace a mineral-finished roofing felt or torch-on waterproofing system on a flat roof.
The IKO TGX SBS Black Torch-On Roofing Felt is a polyester-reinforced, SBS-modified bitumen cap sheet designed for use in professional built-up roofing systems.
Manufactured using SBS (styrene-butadiene-styrene) modified bitumen, this torch-on membrane offers improved flexibility compared with conventional unmodified bitumen roofing materials. Its reinforced construction provides strength and dimensional stability, making it suitable for a range of domestic and commercial flat roofing applications.
The black mineral surface provides a traditional dark roofing finish while helping protect the completed roofing system against UV exposure. A thermofusible film on the underside enables the membrane to be heat-bonded to a suitable prepared substrate or compatible underlay.
Key Features & Benefits:
- SBS-modified bitumen – Provides enhanced flexibility and performance across changing temperatures.
- Polyester reinforcement – Offers strength, durability and dimensional stability.
- Black mineral finish – Provides UV protection and a traditional dark roofing appearance.
- Torch-on application – Designed for heat bonding within compatible roofing systems.
- Thermofusible backing film – Facilitates bonding during installation.
- Suitable for roofing refurbishment – Can be used in appropriate new-build and refurbishment systems.
- 8m x 1m roll – Nominal roll area of 8m² before allowing for overlaps and detailing.
Typical Applications
- Domestic flat roofing projects
- Commercial flat roofing
- Roofing refurbishment and replacement
- Compatible two-layer built-up torch-on roofing systems
- Suitable bituminous roofing overlays, subject to system specification
Application Advice
This product is designed for professional torch-on installation and must be used with compatible roofing materials in accordance with IKO's technical guidance.
Torch-on roofing involves naked flames and should only be undertaken by suitably trained and competent installers following appropriate fire safety procedures.
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