YBS Breather Foil Fire Retardent Membrane 1.35 x 25m

By YBS Insulation Product code: 43031 Pack size: Each

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Product Details

Looking for a two-in-one insulating venting membrane when working with timber frame and modular building constructions? YBS BreatherFoil will outperform traditional breathable membranes and greatly increase the U-value of a timber frame wall.

Whether pre-fabricated or assembled on site, you’ll be sure of maximum flexibility when detailing timber frame walls or dormer cheeks, without the expense of thicker timber frames or higher priced materials. 

BreatherFoil’s unique design allows the application to breathe while offering improved thermal performance. Its core bubble profile offers great thermal benefits by trapping air within the small bubble pockets. The outer aluminium foil layers increase the overall thermal performance, due to their high reflectiveness.

• Two-in-one insulating and breathable venting membrane

• Suitable for timber frame and dormer walls

• Effectively reflects heat back out of the room

• Allows moisture to pass through, reducing risk of condensation

• Up to 42% reduction in heat loss (based on a single layer in a timber frame)

• R-Value up to 0.79 m²K/W (equivalent to 35mm of Mineral Wool)

• Non-degradable for long-lasting thermal performance

• Excellent tensile and tear-resistance strength

• Two layer build-up and only 4mm thick

• UV stable and weather-resistant

• Flexible, lightweight and easy to install

• Minimal waste compared to traditional insulation products

• Zero fibres removes the need for PPE

• Rolls can be sealed and joined together with foil tape 16309

• Fully Agrément-certified, Building Control-compliant and NHBC-accepted

• Made in Britain

Technical Specification
Brand YBS Insulation
Width (mm) 1350
Manufacturer ID BF 01 1350 X 25
Width (mm) 1350
Video click here
Type Membrane
Depth (mm) 4
Length (m) 25
User Guide click here
Fabric Weight 183 gsm
Range Name BreatherFoil
Delivery details

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery – £5.00 or FREE for orders over £25

  • Order before 9pm Monday to Thursday for next business day delivery
  • Order Friday to Sunday before 5pm for Monday delivery
  • Orders placed after Sunday at 5pm will be delivered the following Tuesday
Pre-12pm Delivery – £10.00 to arrive before 12pm on the scheduled days above
Saturday Delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 6pm Friday)
Sunday delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 4pm Saturday)
Times may vary for items being delivered directly from the supplier. For more information, please visit our delivery information page below.
Items over 30kg can only be delivered from Monday to Friday. If ordered before 6pm, please allow up to two business days for delivery. Orders placed after 6pm Thursday will be delivered after the weekend.
More about Delivery
Click & Collect details

Collection Details

Our opening times are 7am-8pm Monday-Friday, 7am-6pm Saturday and 9-4pm Sunday. Please check your local store is open on the store locator page, before you visit.

Once you have placed your order online, we’ll have it ready for you at the store you have selected in as little as 5 minutes. We will hold your order for 14 days, after which we will automatically generate a refund to the payment type you used to place the order.

Don’t forget your mobile number – Make sure your mobile number is added so that we can text you when your order is ready to collect. Please wait for your text or email before coming to collect your items.

If an item is eligible for Next Business Day Collection in store, the order must be placed by 9pm Monday to Thursday for collection the next day. Orders placed after 9pm on Thursday, and up to 5pm on Sunday, will be available for collection on Monday. For larger items over 30kg, please allow two business days.

YBS Breather Foil Fire Retardent Membrane 1.35 x 25m is rated 4.8 out of 5 by 5.
Rated 4 out of 5 by from Foil Faced Breather Membrane Ideal for use on a timber frame section of my project with a blockwork cavity wall. Make sure the foil is facing the cavity.
Date published: 2022-08-24
Rated 5 out of 5 by from YBS foil membrane . This stuff is very tough and works very well brilliant vapour barrier water just runs away .
Date published: 2022-04-30
Rated 5 out of 5 by from Seems good Light to lift, easy to cut to size, seems robust. Will have to wait and see about the insulation effects when the weather gets cold.
Date published: 2021-09-10
Rated 5 out of 5 by from Good Quality Membrane This is a good quality, hardwearing product, much thicker than ordinary bubble wrap. It is properly waterproof, and breathable as well as offering a very small amount of insulation. We've used it under the cladding on a number of garden buildings and it certainly helps with reflecting heat away so the inside stays cooler.
Date published: 2020-07-02
Rated 5 out of 5 by from Does what it says on the packet Good to work with and quite strong for a membrane
Date published: 2017-09-16
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