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YBS BreatherQuilt - 45mm Breather Membrane & Multi-foil Hybrid

Product Functions

YBS Reflecting Insulation and Eco Products

YBS BreatherQuilt is a very flexible, easy to fit, breathable multi-layer insulation that achieves a high thermal resistance. This combined insulating and breather membrane is designed for installation on pitched roof and is ideal for new build & refurbishment.

Lightweight, flexible and thin it is fast and simple to install and requires minimal space. This effective barrier to over heating / heat loss is the equivalent of 65mm of mineral wool, and is BDA Agrément Certified (Dutch Board of Agrément)


Product Properties & Benefits

BreatherQuilt is a very flexible, easy to fit, breathable multi-layer insulation achieving a high thermal resistance 1.62 m²K/W.

BreatherQuilt Multi-foil Insulation with incorporated Breather Membrane
  • Two in one insulating & breather membrane
  • Pitched roof insulation
  • Ideal for new build & refurbishment
  • Lightweight, flexible & thin
  • Fast and simple installation
  • Minimal space required
  • Removes the risk of condensation
  • Equivalent to 65mm of mineral wool
  • Certified to industry standards

Product Price List and / or Add to Cart

Availability: Popular product readily available throughout the country.

Buying YBS BreatherQuilt Products:

YBS BreatherQuilt products are ‘non-stock items’ - delivered directly from the manufacturer or their distributor. While this does not necessarily add to delivery lead times, it does impact minimum order levels and related delivery costs.”

In the case of a combined order to include 'non-stock' items such as YBS BreatherQuilt, we require a minimum order of £250.00, in addition to a ‘stock items’ order to a value of £500.00 or more, this equates to a total minimum order size of £750.00. (Prices exclude VAT)

Price List: YBS BreatherQuilt Multi-Foil Breather-Membrane Hybrid - Uncompressed thickness = 45mm - Components = 11

Fuller details of this product are available: Click Here.


1. Click items below for pricing structure. 2. Click Tick-Box to select one or more items. 3. Click Add to Cart Button.

Less popular product commonly available at selected depots. YBS BreatherQuilt 40mm, 1.2x10m = 12m² - start at £83.98
Less popular product commonly available at selected depots. YBS Aluminised Tape, 75mm x 50m = 50lm - start at £5.91
Less popular product commonly available at selected depots. YBS BreatherQuilt double-sided tape, 50mm x 50m = 50lm - start at £8.64
Less popular product commonly available at selected depots. YBS BreatherQuilt jointing tape, 70mm x 50m = 50lm - start at £8.64

YBS BreatherQuilt - Price and Availability Advisory

Presently there are no availability restrictions. Always observe the 'Star Rating' indicators to assess availability.

Buying YBS BreatherQuilt Products:

YBS BreatherQuilt products are ‘non-stock items’ - delivered directly from the manufacturer or their distributor. While this does not necessarily add to delivery lead times, it does impact minimum order levels and related delivery costs.”

In the case of a combined order to include 'non-stock' items such as YBS BreatherQuilt, we require a minimum order of £250.00, in addition to a ‘stock items’ order to a value of £500.00 or more, this equates to a total minimum order size of £750.00. (Prices exclude VAT)

Product availability indicators

Excellent = Product Availability Excellent Good = Product Availability Good Fair = Product Availability Fair Poor =  Product Availability Poor Undetermined = Product Availability Undetermined
Availability relies on stock levels at closest depots and upon transport logistics to effect deliveries


Product Technical Properties

Product Description
11 Components
Thickness 40mm approx.
Weight 600g/m²
Mechanical Properties Value Reference Standard
Thermal performance
Core 1.17m²K/W BS EN 16012
Core + 1 Airspace 1.62m²K/W BS EN 6946
Emission coefficients of surfaces 0.05 BS EN 16012
Tensile strength 142KPA BS EN 1608
Packaging 12m²
Width 1.2m
Length 10m
Weight 7.5Kg

BreatherQuilt U Value Examples

BreatherQuilt Draped Over Rafters Pitched Roof (400mm & 600mm centres) U Value

YBS Breatherfoil cross section  installed without counter battens
U-value Table
Description (rafters at 400 centres) U-Value
BreatherQuilt and 200mm PIR 0.13 W/m²K
U-value Table
Description (rafters at 600 centres) U-Value
BreatherQuilt and 170mm PIR 0.13 W/m²K

BreatherQuilt Counter Batten Over Rafters Pitched Roof (400mm & 600mm centres) U Value

YBS Breatherfoil cross section  installed with counter battens
U-value Table
Description (rafters at 400 centres) U-Value
BreatherQuilt and 200mm PIR 0.13 W/m²K
U-value Table
Description (rafters at 600 centres) U-Value
BreatherQuilt and 175mm PIR 0.13 W/m²K

Product Installation

Fixing details

YBS Breatherfoil installed with counter battens

Installation of BreatherQuilt for pitched roof applications and additional insulation products should be in accordance with the manufacturers certificate, fixing instructions and current good building practice.

Start at the bottom of the roof by rolling BreatherQuilt across the rafters and staple in to place.

Tape a line of double sided tape along the top edge of the material.

Install the next layer of BreatherQuilt using the 100mm membrane overlap.

Staple as before then secure with the double sided tape, to cover the joint.

BreatherQuilt can be cut with craft knife or a sharp pair of scissors. Staple at regular intervals.

Minimum 14mm stainless steel or galvanised staples are recommended.

No protective clothing/handling required.

Installation Detail - Over rafter - Counter battened

YBS Breatherfoil installed without counter battens

Starting at the edge of the roof and working horizontally, nail or staple BreatherQuilt to the first rafter using 14mm staples, pull taught and proceed across the roof.

At the eaves BreatherQuilt should extend onto a suitable eaves carrier.

Install 25mm battens parallel with the rafters.

Proceed with tile/slate battens and tile/slates.

Installation without counter batten

Starting at the edge of the roof and working horizontally, nail or staple BreatherQuilt to the first rafter using 14mm staples, BreatherQuilt should hang down between the rafters ensuring once tile battens are installed a clear 10mm drape is formed at the centre of all rafter spaces.

At the eaves BreatherQuilt sould extend onto a suitable eaves carrier.

Proceed with tile/slate battens and tile/slates.


Product Information and Certification

Links to manufacturer's information. Click to download in a separate browser window.

YBS BreatherQuilt Datasheet | YBS BreatherQuilt BDA Certificate

Product Certification

  • Directive BDA Agréments (Praktijkbladen), September 2008
  • BDA Agrément Nr. BAR 15-044/01/C ThermaQuilt

Priced on Application:

Generally, Products are readily available

Estimates for large quantity orders can be priced on application. Please contact us to discuss such matters.

Contact us directly for further information: Telephone 0333 8000 828  - Email: Click Here:


Contact Manufacturer

YBS Insulation

The Crags Industrial, Park Morven Street, Creswell, Derbyshire, S80 4AJ, England
Technical Telephone: +44 (0) 871 917 0044 - Note: Tech support calls are charged at 10p per minute from a UK BT landline, other networks may vary.
Facsimile: +44 (0) 844 99 100 55
Email: technical@ybsinsulation.com
Web site: www.ybsinsulation.com

Contact us

Insulation Online Limited

27 Massetts Road, Horley, Surrey, RH6 7DQ, UK

Telephone: 0333 8000 828

Facsimile: 0333 7000 797

Email: enquiries@insulation-online.com

Web site: www.insulation-online.com

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