Applying insulation rolls using a torch.

Applying insulation rolls using a torch.

Applying insulation rolls using a torch.

Torch Applied Membrane as it is also known, is a flat roof covering solution that involves three layers of modified bitumen (felt) melt-welded onto the roof surface and each other with the use of a blowtorch to create an impenetrable, waterproof seal.

Traditionally, the three layers used in this process are a vapor control sheet, reinforced felt and a cap sheet with mineral finish. Using three layers of felt is required by building regulations for habitable areas of a home. For sheds and garages, only two layers may be needed.

The dangers of applying these layers with the use of a hot flame makes torch-on felt roofing a job best left to the professionals.

Applying Torch-Applied Insulation Rolls: A Comprehensive Guide

Torch-applied insulation rolls are considered an effective and reliable technique in both thermal and water insulation. This method is suitable for various applications, whether insulating building surfaces or industrial system pipes. In this article, we will take a closer look at how to efficiently apply insulation rolls using a torch.

Basic Steps:

1. Preparation and Cleaning:

Before initiating the insulation process, ensure that the surface is dry and clean. Removing dirt and debris ensures optimal adhesion between the materials.

2. Material Selection:

Choosing the right materials is crucial. It is advisable to use insulation rolls containing high-quality and durable materials.

3. Heating the Torch:

Before installing the rolls, adequately heat the torch. This helps in even melting of the materials and effective distribution.

4. Installing the Rolls:

Pass the torch evenly over the roll during installation, ensuring the heat is directed towards the insulation material to ensure good adhesion.

5. Checking Adhesion:

After installation, inspect the adhesion between the rolls to ensure there are no gaps or leaks.


  1. Insulation Efficiency: The use of a torch allows for even heat distribution, enhancing the thermal insulation effectiveness of the covered surface.

  2. Cost-Efficiency: Torch-applied insulation rolls are an economical option compared to some other methods.

  3. Environmental Resistance: Torch-applied insulation rolls exhibit good resistance to changing environmental conditions and external impacts.


  • Avoid working in strong wind or rainy conditions.
  • Ensure the use of personal safety equipment such as gloves and protective eyewear.

In conclusion, applying insulation rolls with a torch proves its effectiveness in providing efficient protection against environmental factors and improving insulation efficiency. By following the correct steps and taking necessary precautions, you can achieve excellent results in your insulation processes.