Tyvek Supro Breather Membrane Felt Underlay 1.5m x 50m (75m2/Roll)

£150.00ex. VAT £2.00 per m2
£150.00ex. VAT
£2.00 per m2

Nationwide Delivery

Thu 11 Jun

Order by 2pm tomorrow
  • 21hrs
  • 21mins
  • 36secs

Delivery & Returns Info

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Delivery & Returns Information

Delivery charges vary by product category and order value. Items may ship from different suppliers and arrive separately, so delivery charges can be shown per part of your order at checkout.

Standard (Nationwide) Delivery

Insulation, Plasterboard and Drylining Products
ORDER VALUE DELIVERY CHARGE
Under £400 £45 ex. VAT
Over £400 ex. VAT FREE
Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products
ORDER VALUE DELIVERY CHARGE
Under £300 £25 ex. VAT
Over £300 ex. VAT FREE
Screws & Fixings and Adhesives & Sealants
ORDER VALUE DELIVERY CHARGE
Under £75 £7.50 ex. VAT
Over £75 ex. VAT FREE
Facing Bricks
DELIVERY CHARGE
Each pack £85 ex. VAT

Express Delivery

Express Delivery - Insulation and Plasterboard & Drylining
ORDER VALUE DELIVERY CHARGE
Under £400 £90 ex. VAT
Over £400 ex. VAT £55 ex. VAT
Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products
ORDER VALUE DELIVERY CHARGE
Under £300 £50 ex. VAT
Over £300 ex. VAT £35 ex. VAT

View Full Delivery Policy

How delivery works

We work with a nationwide network of trusted suppliers. Items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you will see delivery charges shown at checkout for each part of your order. We always aim to group products from the same supplier to keep delivery costs as low as possible.

Delivery areas

Delivery charges apply to mainland UK, excluding: AB, CA, CF, DD, DG, EH, EX, FK, KA, KW, KY, IV, LA, LD, LL, ML, NP, PA, PH, PL, SA, SY, TR, TQ and TD.

If your address is in one of these areas, we will contact you before processing your order to confirm any additional costs. We do not currently offer delivery outside the UK mainland.

What to expect on delivery day

  • Deliveries are typically kerbside.
  • Please ensure someone is on-site to accept delivery. For heavier items, help with offloading may be required.
  • Many building materials arrive on large vehicles. If access is restricted, a specialist vehicle such as a HIAB may be required and could incur an additional charge.

Why delivery can cost more than typical parcel delivery

Building materials often travel on larger vehicles and usually carry fewer drops per run than parcel networks. That is why delivery charges can be higher than standard e-commerce shipping.

Returns

Returns depend on what you have bought and whether there is anything wrong with it. For full details on eligibility, timeframes, and exclusions, please see our full policy.

View Full Returns Policy


Key Features

  • {{gpp_good}} Fully BBA, IAB, and UKAS approved
  • {{roofing}} Supported and unsupported pitched roof applications
  • {{air}} Ensures effective control of air and moisture 
  • {{check_circle}} Eliminates the need for soffit, tile, or ridge ventilation

Technical Specification

Technical Specification
URN: 5004049
Brand: Tyvek
Width: 1.5m
Length: 50m
Sales Unit: Roll
Sales Unit Coverage: 75m2
Manufacturer's Reference: D13404173

Product Overview

Tyvek Supro Breather Membrane Felt Underlay is a vapour-permeable pitched roof underlay designed to deliver dependable resistance against wind-driven rain and external moisture ingress.

Manufactured from high-performance composite layers, it maintains tensile strength and dimensional stability during installation and long-term service.

The membrane supports controlled vapour movement from the loft space while maintaining a water-resistant external barrier suitable for ventilated and non-ventilated cold and warm roof constructions.

Its robust construction enables handling, cutting, and fixing without excessive tearing, aiding reliable installation across varying roof geometries.

It is supplied in a 1.5m × 50m roll providing 75m² of coverage.

Features & Benefits

  • Breathable performance: Allows vapour to escape from the roof structure while resisting external moisture penetration
  • High tensile strength: Multi-layer composite design supports durability during installation and service life.
  • Wind-uplift resistance: Suitable for both ventilated and non-ventilated pitched roof systems in accordance with roofing standards.
  • Low water permeability: Provides a dependable secondary weatherproof layer beneath tiles and slates.
  • Installer friendly: Lightweight, flexible membrane suitable for efficient handling, cutting, and fixing on site.
  • Roll identification: Supplied in a 1.5m × 50m roll delivering 75m² of membrane coverage.

Applications

  • Cold or warm pitched roofs: Suitable for use beneath tiles and slates in ventilated or non-ventilated constructions.
  • Refurbishment projects: Appropriate for upgrading underlay performance during strip-and-replace roofing works.
  • New build roofing: Suitable for integration within modern roof build-ups complying with current ventilation guidance.
  • Wind-exposed sites: Appropriate for locations requiring elevated wind-uplift resistance.

Installation Guidance

  • Roll positioning: Install horizontally across rafters or sarking with appropriate laps according to pitch and exposure.
  • Fixing method: Secure using corrosion-resistant staples or nails with counter-battens as required.
  • Lap formation: Maintain minimum head and side laps in accordance with manufacturer guidance and roof pitch.
  • Eaves and ridge detailing: Follow approved detailing for drainage paths, ventilation continuity, and ridge termination.
  • Important note: Installation must comply with BS 5534 and manufacturer instructions for wind-uplift and weather resistance.

Compliance & Performance

  • Water resistance: Designed to resist external moisture penetration under typical UK weather exposure.
  • Vapour permeability: Allows controlled vapour movement to reduce interstitial condensation risks.
  • Durability: Manufactured for long service life under normal pitched-roof environmental conditions.
  • Handling note: Store rolls flat or upright and protect from prolonged UV before installation.
  • Important note: Always follow manufacturer guidance for laps, fixings, and integration with ventilation strategy.

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