We're Open and Continuing to Deliver. Order Online Today!

Up to 50% Cheaper Than High Street Retailers
Nationwide Delivery For Select Products & Locations
5915 Reviews | 4.4/5 Stars Gold Trusted Service Award 2020

Torch-On Felt

Torch-on felt is a highly durable, weatherproof flat roofing material. A torch-on felt roof system is usually made up of three layers made from sturdy bitumen felt, including a vapour control layer, a...

Read More
View as Grid List

5 Items

Set Ascending Direction
View as Grid List

5 Items

Set Ascending Direction


5915 Reviews

Gold Trusted Service Award 2020

Klarna Finance

Buy now and pay later with Klarna. View your finance options at checkout.

Refine By

How to Calculate Your m²/ft²?

How to Calculate Your m²/ft²?

It’s actually very easy to calculate how many square meters or foot an area is, whether it is a simple rectangle or more complex shape. When dealing with a simple rectangle, just multiply the length by the width for your total square meterage or footage. If you’re dealing with a more complex shape, treat each area as a rectangle and perform the same calculation. Then combine the square meterage or footage of each area for to get the total area.

calculate m2 illustration

Common Questions

What’s the Standard Size for Rolls of Torch-On Roofing Felt?

Roofing felt, including torch-on felt generally comes in standard sizes of roughly 1x8m. This size offers the perfect balance of practicality and value for money, as a single roll of felt can adequately be used to complete common small projects such as a garden shed roof.

How Many Layers of Torch-On Felt Do You Need for a Flat Roof?

In general, you’ll need three layers to cover a flat roof with torch-on felt. This means that you’ll need triple the square footage of your roof area to complete the job, as well as accounting 10% or more for waste. The three layers include a vapour control layer, bitumen roofing felt, as well as a cap sheet. For smaller flat roofing projects such as garages or sheds, it may be possible to only use two layers rather than three.