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 (code 16904)
• Fully Agrément-certified, Building Control-compliant and NHBC-accepted
• Made in Britain

Delivery (UK mainland only)

 

Next Day: £5, or FREE over £40

- Order by 9pm Mon-Thu: next working day

- Order Fri to 5pm Sun: Monday

- Order after 5pm Sun: Tuesday

 

Pre-12pm: £10

- Same cut-offs as Next Day above

 

Saturday & Sunday: £10, or £5 over £40, or FREE over £75

- Saturday: order by 6pm Fri

- Sunday: order by 4pm Sat

 

Heavy items (over 30kg)

- Mon-Fri only. Order by 6pm and allow up to two working days

- Order after 6pm Thu: arrives after the weekend

 

Supplier items

- Sent directly by the supplier, so timings vary. Lead times appear on the product page in working days (Mon-Fri)

 

More about delivery 

Next Business Day Collection (eligible items)

- Order by 9pm Mon-Thu: collect next day

- Order after 9pm Thu to 5pm Sun: collect Monday

- Heavy items (over 30kg): allow up to two working days

 

Opening hours

- Weekdays vary by branch: open 6:30am-7am, close 6pm-8pm

- Saturday: 7am-6pm

- Sunday: 9am-4pm

 

Check your local store's hours and that it's open before visiting. Please wait for our text or email before collecting.

 

Holding your order
We'll hold it for 14 days, then automatically refund your original payment method.