Roofing Torches Explained: Choosing the Right Torch for the Job

Wondering which roofing torch to use? Here’s everything you need to know — from the difference between a detail torch and a full-size burner to what makes our Magnum Torch line the best in the business. Every torch we sell comes with a high-quality hose and adjustable regulator, so you're ready to roll right out of the box.

Whether you're doing fine seam work on flashing or laying down a full modified bitumen cap sheet, we've got you covered with:

In this article, we’ll break down what makes each torch unique, when to use a detail torch vs. a standard one, and how to get the most from your flame. Let’s fire it up.

🔥 Quick Answers: Roofing Torch FAQsQ: What is a roofing torch used for?

A roofing torch is used to apply heat to modified bitumen membranes during torch down roof installations. The flame melts the underside of the material, bonding it securely to the roof deck or base layer.

Q: What’s the difference between a detail torch and a full-sized roofing torch?

A detail torch has a smaller flame and more control, ideal for precision work in tight spaces. A full-size roofing torch puts out a wide, high-BTU flame for large surfaces, cap sheets, and general membrane heating.

Q: Do your torches come with everything I need?

Yes. Every roofing torch we sell includes a propane hose and adjustable regulator. No need to hunt for separate parts — you're set from day one.

The Torch Lineup: Which One’s Right for You?

We’ve curated a line of torches that covers every job on the roof, from detail welding around pipes to large-area membrane installs.

🔧 Long Handle Torch Kit w/ Electric Starter

Best for: Fast membrane heating, larger surfaces, all-day jobs

This torch kit is all about power and convenience. The long handle reduces fatigue and keeps you at a safe distance from the flame, and the built-in electric igniter means no fumbling with spark lighters on windy rooftops.

  • Heavy-duty steel wand

  • Built-in push-button igniter

  • Comfortable handle grip

  • Wide flame spread

  • Includes regulator and 10' propane hose

Pro Tip: The long handle makes this ideal for wide passes across modified bitumen membranes. Great for large cap sheets or applying SBS over base layers.

👉 Long Handle Torch Kit w/ Electric Starter

🔥 Magnum Torch

Best for: Daily professional use, fast membrane welding, general purpose torch work

The workhorse. The Magnum Torch is our go-to for most torch down jobs. With a high-output flame, this unit heats up rolls fast while still offering a tight enough cone for seams and overlaps.

  • Durable construction for everyday use

  • Balanced flame control

  • Comfortable handle and flame tube design

  • Includes regulator and hose

Pro Tip: This torch balances power and control. If you only want to buy one torch to do it all, this is the one.

👉 Magnum Torch

🧰 Magnum Detail Torch

Best for: Flashings, corners, walls, small patches, repairs

When precision matters, go small. The Magnum Detail Torch is built with a narrower flame head, giving you total control over delicate areas like flashing, pipe boots, skylight curbs, and tight angles.

  • Smaller nozzle = tighter flame control

  • Excellent for repairs and terminations

  • Easy to handle in vertical or angled positions

  • Includes regulator and hose

🔍 Detail vs. Regular Torch: The detail torch produces less heat, which means you won’t risk burning or over-melting the membrane in confined spaces. It's a must-have for finishing work.

👉 Magnum Detail Torch

🎯 Magnum Torch Combo Kit

Best for: Contractors who want options on the job site

Why choose? This kit gives you both a Magnum Torch and a Detail Torch, plus all the accessories in one package. Ideal for pros who need to switch between big coverage and fine finish work.

  • One torch for membrane application

  • One torch for detail zones

  • Both torches use a shared regulator/hose system

  • Includes both torches, regulator, and hose

Pro Tip: If you’re a contractor bidding commercial or mixed-use roofs, this kit lets you show up fully equipped — no swapping tools mid-job.

👉 Magnum Torch Combo

When installing roofing systems like torch down or modified bitumen, the correct torch prevents damage to the material. Using a large flame near a corner or pipe boot can lead to burns or membrane shrinkage — which causes future leaks. Detail torches eliminate that risk.

Installation Tips from the Field

Here’s how to get clean, professional results with our roofing torches:

🔹 Heat Control Is Everything

Start with lower flame settings and adjust based on:

  • Ambient temp

  • Wind conditions

  • Membrane thickness

If the material starts bubbling or scorches, you’re too hot or too close.

🔹 Keep It Moving

Don’t hold the flame in one place. Sweep steadily in an “S” or straight-line pattern. Let the membrane follow the heat line naturally — no forcing or pulling.

🔹 Use a Weighted Roller After Heating

Once the membrane is tacky, follow with a 150 lb roller to ensure bonding. This presses the melted bitumen into the substrate evenly. - 150 lb. Membrane Roller - Shop Now

🔹 Stay Safe

Always use:

  • Fire-resistant gloves

  • Face shield or goggles

  • Fire extinguisher within reach

  • A fire watch (someone stays on site 30–60 minutes post-work)

⚠️ Remember: An improperly managed torch is a fire hazard. Our torches are powerful, and roofing safety comes first.

Every Torch Comes Complete

Here’s what you get when you buy any of our roofing torches:

10-foot propane hose – high-pressure rated

Adjustable regulator – precision gas control

Pre-assembled torch head

Tested and ready for jobsite use

There’s no guesswork. Just connect to your propane tank, ignite, and go.

Final Thoughts: Choose the Right Flame for the Job

If you're serious about quality roofing, don't cut corners on your heat source. Whether you’re sealing a 10,000 sq ft flat roof or just detailing a corner around a drain, your torch choice affects everything from installation speed to membrane performance.

🔸 Go with the Magnum Torch for general purpose, high-output jobs.

🔸 Grab the Magnum Detail Torch when the job calls for precision and control.

🔸 Pick the Long Handle Torch Kit if you want comfort and built-in ignition.

🔸 Choose the Combo Kit if you want versatility and value.