Rubber Membrane Repair Torch Down – DIY Videos

Torch Down Rubber Membrane Repair

It is fairly easy to make a rubber membrane repair ones you have the tools and materials.

Image of tools needed to repair rubber roofs

What is on this page

  • Materials and Tools list  with instructions to fix a Torch Down Rubber Roof
  • What to look for before making roof repairs
  • Comparing Torch Downs with other Roof systems
  • Aluminum or Silver Coating for Torch Down membrane
  • How to mend or patch a Torch Down Rubber Roof

Warning – Before making Torch Down Rubber Membrane Repairs – determine the “Type of Roof”

Click for Type of Roof

The Torch Down Rubber Membrane is still by far the best roofing membrane and will outlast any other roofing membrane.

How to repair a Torch Down Rubber Membrane Roof

"Locating the leak is harder than fixing it"

    1. Find the object or place where the roof is leaking
      • Get reference points inside the building or take measurements from two walls to get an approximate idea where the leak is on the roof
      • Check the flashing, skylights, door-pans, vent pipes for possible clues that could cause the leak
    2. Tools and Materials needed
      • Disposable Brush
      • Rags
      • Scissors
      • Steel brush
      • Scraper
      • Turbo Poly Seal or Super Silicone Seal from https://bergstromm.com/
    3. Prepare the Surface:
      • Use the wire brush and brush away any loose paint, debris
      • Wipe the surface clean from any dust
      • Remove any old caulking with a scraper
      • Remove old Tar
    4. Start the repair:
      • Open the can of Turbo Poly Seal or Super Silicone Seal.
      • Stir the contents well
      • Apply a thick coat of sealant over the leaky area covering at least 2 inches on each side of the leak
      • Measure and cut a piece of Polyester Fleece that will be big enough to cover the leak area
      • Apply the fleece over the sealant and dab it into the sealant with the brush
      • Apply a final coat of Sealant over the fleece ensuring that the entire Polyester cloth is covered
    5. Curing Time:
      • Make sure there is at least 1 hour time after fixing the leak and before it rains
      • It takes about 24 hours to cure at 65° F
      • If there is any  sealant left in the container, make sure to seal it very tightly

Pitch Pockets that are located next to Airconditioner units are common to cause leaks.

If your commercial roof is leaking, inspect the following:

  1. Locate the "Pitch Pocket" - this is where all the electrical wires and conduit pipes come through the roof
  2. Make sure the "Tar" is filled to the brim. If the tar is forming a pocket where water can accumulate, it will cause a leak
  3. Make sure the foam insulation around the condenser pip;e is intact. If the foam insulation is corroded or broken, when it rains, water will leak in between the foam and the pipe into the building
  4. Make sure that the Tar seals tightly around the condenser pipe and wires
  5. Check the transition from the Pitch Pocket to the rubber roof - the flashing may need repair

No matter what causes a leak, if you have Turbo Poly Seal or Super Silicone Seal, you can repair any leak

How to repair a leak:

  1. After locating the leaky area, prepare the surface by cleaning it removing loose paint and debris
  2. Wipe the area clean with a rag
  3. Apply one coat of sealant covering two inches on each side of the leak area
  4. Install a precut Polyester Fleece over the sealant embedding it
  5. Apply  a final coat of Sealant over the Polyester Fleece
  6. Make sure to close the container securely so no air can get in

If you have a Torch Down Rubber roof and it was protected against ultraviolet rays with a silver coating or a ceramic surface, then it could last indefinitely. These roofs are tough and as long as there is a protection on it, they will not go bad.

If it was not protected, then you have to look for certain signs to determine if it’s repairable or not.

  1. Spider cracks in the surface – the entire surface will have these fine cracks, but it could be just in the beginning stages and you could still repair the roof
  2. Look for seam separation – if the installer didn’t know how to use a torch properly to fuse the seams together, then the repair will be costly.
  3. Look for shrinkage. If there is evidence that the rubber membrane is pulling away from the wall or flashing due to its age, then it could still be repaired but at a considerable cost.
  4. Deep spider cracks mean the roof is over 10 years old. This could mean that it was not protected and it becomes too costly to repair.
This video shoes how to go about repairing a Torch Down Rubber Roof

In the image below you see Spider Cracks on the surface of an unprotected Torch Down Rubber Roof. If you see cracks like these then the roof is approximately 10 to 12 years old

Spider Cracks on a Torch Down Roof - How to repair a Torch Down Roofing membrane
Spider cracks on a Torch Down Rubber surface

Modified Bitumen Rubber Membranes

There are many types of Modified Bitumen Rubber. From a Torch Down to a Peel and Stick type

Repairing a Torch Down Roof is relatively easy. Using the right “Tar”, you can almost fix any Torch Down Roof

This video shows what happens to a rubber roof that was not protected against ultraviolets

Don’ts for flat roof repair on a Torch Down

  • Do not use silicone caulking
  • Do not use roofing cement or tar from Home Depot or a Hardware store
  • Do not paint the roof with Silver Coating in the hope that it will seal the leaky area
  • Do not smear tar all over every seam and likely place you thought it could leak from

I guarantee you that if you apply the above-mentioned methods for a flat roof repair on a Modified Bitumen Rubber roof, you very likely will have to do a new roof.

Below are the Tools and Materials needed to make Roof Repairs on a Torch Down Rubber membrane

Round Nose Trowel

Round-Nose-trowel to apply Karnak 81 Modified Bitumen Adhesives
Round-Nose-trowel to apply Karnak 81 Modified Bitumen Adhesives

Modified Bitumen Torch Down Granular Rubber Membrane

This is a Two Ply Modified Bitumen Rubber Roofing Material
This is a Two Ply Modified Bitumen Rubber Roofing Material

Milwaukee Utility knife with hook blades

Milwaukee-Utility-Knife - to cut Torch Down Roofing Flat Roof Repairs
Milwaukee-Utility-Knife – to cut Torch Down Roofing Flat Roof Repairs

Propane Gas Tank and Gloves 

Propane Tank and gloves to make a repair on a Torch Down Rubber Membrane
Propane Tank and gloves to make a repair on a Torch Down Rubber Membrane

Propane Torch

Magnum-Torch for Torching down Modified Bitumen Torch Down Rubber
Magnum-Torch for Torching down Modified Bitumen Torch Down Rubber

Karnak 81 Trowel Grade Modified Bitumen Adhesive

Flat Roof Materials - Karnak 81- for Modified Bitumen Rubber Roof Repair
Flat Roof Materials – Karnak 81- for Modified Bitumen Rubber Roof Repair

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Review Peeper

Flashing

5.0 rating
May 30, 2020

Very informative and friendly we appreciate thank you.

Margarita salinas

very cool

5.0 rating
May 28, 2020

very friendly and good product.

Silvia

Drain leaking

5.0 rating
May 28, 2020

That information is very helpful for me because we have a leak in my flat roof.
Thank you very much

Adelaida Solis

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