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SuperFOIL SFTV L1 Thermal, Vapour and Air Tightness Barrier - 1200mm x 20m

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Recieve an extra 10% off Superfoil SF19+ and SF19BB insulation. Discount automatically applied in cart and must end soon.


Reasons why homeowners choose this product:

    Great coverage. Offers an overall width of 1200mm and overall length of 20000mm.
    Speech Bubble
    Award winning customer support. Speak to our team online or by phone
Special Price £40.30 £1.68 PER M² Regular Price £47.99
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Estimated Delivery:2-3 Days


10,280 Reviews

Trusted Service Award 2022

Product Overview

    Great coverage. Offers an overall width of 1200mm and overall length of 20000mm.
    Speech Bubble
    Award winning customer support. Speak to our team online or by phone
Click here to view more product information. Speak to an Advisor

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Product Description

A highly rated vapour control layer, the SFTV range has been tested and certified to achieve three times the performance of standard vapour control layers. Ideal for roof, wall and floor applications, this barrier is made from highly reflective material, meaning not only does it provide a higher level of vapour resistance than traditional alternatives it also helps keep your home cool in the summer and warm in the winter. Produced as a continuously layer, the SFTV range can be installed quickly and easily with minimal waste. 


Overview of SuperFOIL – SFTV Thermal, Vapour and Air Tightness Barrier 

  • Highly rated vapour control layer with three times the performance of standard layers 
  • 100% waterproof and resists the passage of moisture through walls, floors, and ceilings 
  • Improves the airtightness of your building 
  • Provides a radiant barrier that can enhance the thermal performance U-Values in both new builds and renovation projects 
  • Vapour proof, restricts the passage of warm moist air and protects from condensation 
  • Aids in the prevention of mould and damp 
  • Reduced heat loss 
  • Thermal Performance: 
  • Roof (inc. air spaces): 0.95 R-Value 
  • Wall (inc. air spaces): 1.42 R-Value 
  • Floor (Inc. air spaces): 2.80 R-Value 


Common Questions About This Barrier 

How Do I Install This Barrier? 

Installation of the SFTV range is quick and easy. Simply roll out in a continuous layer and then staple into place. For further guidance, refer to SuperFOIL’s installation guide by clicking above. 

What is a R-Value? 

In short, an R-Value is a number assigned to any given material to allow you to determine how effective it is at resisting the flow of heat. Generally speaking, the higher the R-Value the better the insulation. It is important to note however, that there are other influencing factors that can affect an R-Value so it may not apply to loose-fill or blown-in insulation.  

What is a U-Value? 

Unlike the R-Value, which is material property value, a U-Value is a calculation that measures the rate at which heat flows through one square foot of material. Essentially it is a number to identify how well a product keeps heat from escaping. The lower the U-Value the better that product is at reducing the transfer of heat. 

Have More Questions About This Barrier? 

If you have any questions, don’t hesitate to get in touch with our award-winning team. They’ll help you pick the ideal product for your project, whether you’re revitalising an existing property or are tacking a larger new build. You can get in touch by calling 01295 565 565 or using our online live chat.  

Product Specification

View as Feet & Inch
More Information
Thickness1 mm
Lead Time2-3 Days
Overall Length20000 mm
Overall Width1200 mm

Delivery Information

We understand that ordering products online can be daunting, especially when ordering roofing materials. It is for this reason that we make our delivery processes as simple as possible for you. However, there are a few things to know about our delivery processes. These include:

  • When placing an order, you’ll see a breakdown of your delivery charge in your shopping cart. These charges are for the UK mainland only, and additional charges may apply for Northern Ireland, the Scottish Highlands and other regions.

  • Deliveries only take place on working days (Mon - Fri) and do not take place on Bank Holidays. 

  • You’ll find an estimated delivery on the majority of product pages below the 'Add to Basket' button. Whilst we aim to deliver your items within the estimated delivery, it is only an estimate. 

  • You're able to select a preferred delivery date in your shopping basket. Whilst we aim to deliver your items on this date, it is not guaranteed.
  • Orders placed after 12pm, during the weekend, and on a bank holiday will not be processed until the next working day. Please consider this when placing your order as it may impact your delivery date.

  • After you’ve placed your order, you’ll receive an order confirmation by email outlining the details of your order. Please check your order confirmation email and inform us of any mistakes or errors immediately.

  • Shortly after receiving your order confirmation you’ll receive a separate email confirming the planned delivery date.

  • We can only provide a delivery date and are not able to confirm the time delivery will be attempted. Therefore, we ask that somebody is able to accept and sign for your items throughout the started delivery date.

  • If you are unable to accept and sign for an order, it can be left in a safe location in most circumstances. Please email [email protected] if you would like an item to be left without a signature. 

  • Whilst we aim to hold the majority of our products in stock, due to the vast number of products we offer this is not always possible. Because of this we are required to send your items directly from the manufacturer on a small number of occasions, at which point a different delivery charge may apply as standard.  

  • On occasions the items ordered may be shipped from different depots, which could result in seperate deliveries taking place.

If you have more questions about our products or delivery, please contact our team online or by telephone.

Refund Information

We understand mistakes can be made and we therefore keep our cancellation and returns policy as simple as possible. However, there are a few things to know about cancelling an order or returning an item. These include:

Items Not Required

Should you no longer require an item, you have the right to cancel within 14 days of delivery unless the items are custom made. You needn’t give us reason for cancelling your order but will be required to notify us by email. Once notified we will provide an address for the items to be returned to and arrange the necessary refund.

Faulty or Damaged Items

On the rare occasion that an item is delivered faulty or damaged, we will exchange it or provide a refund. We must be notified by email as soon as possible and may require images. To avoid such an issue, we ask that customers do not sign for damaged goods.

Custom Made Items

A handful of items are ‘Custom Made’. This means they are typically manufactured to the specifications provided by you and are therefore non-refundable. This is unless they are deemed to be faulty or damaged at the time of delivery, at which point you should notify us by email as soon as possible.

Further Information

For further information on cancellations, returns and refunds please read our full policy by clicking here. This confirms any other requirements to consider (i.e. packaging), fees that may be charged (i.e. admin charges) and our policy for businesses.