Torch-down roofing is a durable and weather-resistant roofing system commonly used for flat or low-slope roofs. It is favored for its waterproofing abilities and long lifespan, making it an excellent choice for commercial and residential properties. Here’s everything you need to know about torch-down roofing, from installation to repair.

What is Torch-down roofing?

Torch-down roofing, also known as modified bitumen roofing, is a type of roofing membrane made from bitumen, rubber, and resins. The installation process involves using an open-flame torch to adhere layers of the material to the roof surface, creating a seamless and watertight barrier.

Benefits of Torch-down roofing:

• Superior waterproofing – Ideal for preventing leaks on flat or low-slope roofs.

• Durability – Resistant to UV rays, temperature fluctuations, and heavy foot traffic.

• Long lifespan – Can last 15 to 20 years with proper maintenance.

• Flexible and adaptable – Expands and contracts with changing weather conditions to prevent cracks.

How to apply Torch-down roofing?

Applying torch-down roofing requires precision and professional expertise. The process includes:

1. Surface preparation – Cleaning the existing roof surface to remove debris and ensure proper adhesion.

2. Laying the base sheet – A modified bitumen base sheet is applied to create a stable foundation.

3. Torch application – The roofing membrane is heated with a propane torch to fuse it onto the base sheet.

4. Seam sealing – Overlapping sections are heat-welded together to form a seamless, waterproof layer.

5. Final inspection – Ensuring the entire surface is properly sealed with no weak spots or bubbles.

How to install Torch-down roofing?

Proper installation is crucial for the longevity of a torch-down roof. The installation process involves:

1. Measuring and cutting the membrane – Pre-cutting sheets to fit the roof dimensions.

2. Installing insulation (If required) – Some roofs require insulation boards for added thermal efficiency.

3. Rolling out the modified bitumen membrane – Aligning the sheets correctly before heating.

4. Torching the membrane – Using a propane torch to heat the underside of the material, allowing it to adhere to the surface.

5. Overlapping seams – Ensuring each layer is properly bonded for a watertight seal.

6. Inspecting the roof – Checking for proper adhesion and potential weak spots.

Safety considerations:

• Torch-down roofing involves an open flame, so fire safety precautions must be followed.

• Only experienced professionals should perform the installation to avoid improper adhesion and potential fire hazards.

How to repair a Torch-down roof?

Over time, torch-down roofs may develop minor wear or damage. Here’s how to repair them:

1. Inspect the roof – Identify cracks, blisters, or leaks.

2. Clean the damaged area – Remove dirt and debris for better adhesion.

3. Apply roofing cement – Seal small cracks or gaps using roofing cement.

4. Heat and reapply a patch – Cut a new piece of modified bitumen, heat it with a torch, and adhere it over the damaged section.

5. Re-seal the edges – Ensure all seams are properly bonded to prevent future leaks.

For major repairs or aging torch-down roofs, a full replacement may be necessary to maintain waterproofing and durability.

At Masterpiece Roofing, we specialize in professional torch-down roofing installation, maintenance, and repairs to keep your roof in optimal condition.

Need expert torch-down roofing services? Contact Masterpiece Roofing today for a consultation!