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Breathable Membrane – Vapor Barrier

Referência: BT150

From
2.21€ /m2

Prices including VAT (according to legal rate)

Reference Espessura (mm) / Altura Largura Comprimento Price
BT150-02 1500
2.21€

Unidade métrica utilizada mm

Breathable Membrane – Vapor Barrier

The Breathable Membrane is the ideal solution for roofs and walls, designed to protect against unwanted moisture while allowing the space to breathe. Suitable for residential, commercial, and industrial buildings that require technical performance, durability, and thermal comfort.


Main Advantages

  • One-way vapor barrier: allows interior moisture to escape and prevents exterior moisture from entering.

  • High breathability to maintain dry and comfortable environments.

  • Excellent resistance to temperature variations (-40 °C to +80 °C).

  • Lightweight, thin, and easy-to-apply product.

  • High durability even under demanding conditions.


Technical Details

Attribute Specification
Composition Polypropylene
Weight ~ 125 g/m² (± 15)
Thickness ~ 0.60 mm
Vapor permeability ~ 1400 g/m²/24 h at 23 °C / 85 % RH
~ 3200 g/m²/24 h at 38 °C / 85 % RH
Roll size 50 m × 1.50 m → total of 75 m²

Recommended Applications

  • Roofs with discontinuous coverings (roofs, mansards)

  • Exterior and interior walls subject to condensation

  • Residential, commercial, or industrial buildings requiring humidity control without compromising ventilation

  • Projects that require combined protection and breathability


Usage Instructions

  1. Install over the structure (rafters or suitable base), keeping the membrane well tensioned.

  2. Properly overlap the joints to prevent leaks.

  3. Secure with compatible tapes or elements.

  4. Ensure adequate ventilation on the back of the roof, if necessary.

  5. Protect the membrane during installation to avoid cuts or damage.


Why Choose the Breathable Membrane?

  • Effective protection against moisture without compromising ventilation

  • Material remains stable even under high thermal amplitudes

  • Easy application and compatible with various construction systems

  • Excellent cost-benefit ratio due to coverage area and durability