DuPont Tyvek Supro Breather Membrane (1m x 50m)

DuPont Tyvek Supro Breather Membrane (1m x 50m)

By DuPont · Model: Tyvek Supro · Building Materials

BBA-approved roofing and wall breather membrane providing weather protection while allowing moisture vapour to escape from the building structure.

  • BBA certified for use as a roofing underlay and wall breather membrane
  • High vapour permeability allows moisture to escape from structure
  • Windtight and watertight protection against driving rain
  • UV resistant for up to 4 months exposure during construction
  • Lightweight 50m roll for easy handling on site
  • Compatible with all common roofing and cladding systems
Check Price on Amazon

Overview

Tyvek Supro is the breather membrane that architects and builders specify when they want a product that genuinely performs. Its combination of high vapour permeability and weather resistance makes it suitable for both pitched roofing underlays and timber frame wall construction, where managing moisture movement is critical to building longevity.

In-Depth Look

Tyvek Supro has earned its reputation as the go-to breather membrane for UK construction. Whether it is used as a pitched roof underlay or a timber frame wall membrane, it delivers consistent performance that building control inspectors recognise immediately.

Why Breathable Membranes Matter

Traditional roofing felt traps moisture vapour inside the roof structure, leading to condensation on the underside of the membrane and potential timber decay. A breather membrane like Tyvek Supro allows moisture vapour to pass through from inside to outside while preventing rain and wind from penetrating inward. This is essential for modern energy-efficient buildings with high insulation levels.

BBA Certification

The BBA certificate is what sets Tyvek Supro apart from cheaper alternatives. Building control officers accept BBA-certified products without further evidence, which avoids delays on site. For warranty purposes, many timber frame manufacturers also require a BBA-certified breather membrane.

Verdict

Tyvek Supro is the breather membrane that professionals specify when the building needs to perform correctly for decades. The cost premium over generic alternatives is small relative to the total build cost, and the BBA certification removes any doubt at inspection stage.

Specifications
Roll Size1m x 50m (50m²)
Weight112g/m²
Vapour Resistance0.13 MNs/g (highly permeable)
Water ResistanceW1 classification
UV ExposureUp to 4 months
CertificationBBA, CE marked

Who It's For

  • Roofers installing breathable underlays on pitched roofs
  • Timber frame builders needing a reliable wall breather membrane
  • Self-builders and renovators upgrading from traditional felt underlays

Pros & Cons

Pros

  • BBA certified — accepted by building control without question
  • High vapour permeability reduces condensation risk in roof and wall voids
  • 4-month UV resistance gives extended weather protection during construction
  • DuPont brand recognition and consistent quality

Cons

  • Higher cost than generic breather membranes
  • 1m width requires overlapping on wider rafter spacings
  • Overkill for simple garden buildings or non-habitable structures
Check Price on Amazon
Affiliate Disclosure: This page may contain affiliate links. If you purchase a product through one of these links, we may receive a small commission at no additional cost to you. This helps support our research and keeps this site running. Full disclosure.

Buying Guides

Related Products