Repairing Guides

how to repair a rubber membrane roof

by Dr. Helmer Gleason Published 3 years ago Updated 2 years ago
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  • EPDM Repair: Membrane Punctures. Repair an EPDM rubber roof membrane puncture with a piece of EPDM rubber membrane or EPDM cover tape.
  • Clean the Membrane. When you repair an EPDM rubber roof membrane which has been in service for some time, it is absolutely vital that you remove the accumulated field dirt.
  • Install the Patch. ( Note: If you are using a self-adhering peel-and-stick EPDM patch or tape, you should not apply adhesive to the patch.)

Part of a video titled How to Patch a Leaking Rubber Roof | This Old House
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Patch all right we'll give it a couple of minutes to dry and then we'll apply the patch to the roofMorePatch all right we'll give it a couple of minutes to dry and then we'll apply the patch to the roof with the adhesive dry we're going to roll our patch over the hole.

Full Answer

How to remove a rubber roof membrane?

  • Incorrect storage of the membrane
  • Long-term membrane storage
  • Mishandling of the EPDM membrane
  • Accidental damage
  • Damage during transit in rare instances (contact us immediately if this is the case)

What is the best roof repair product?

  • BEST OVERALL: LR Liquid Rubber Waterproof Sealant – Multi-Surface
  • BEST VALUE: Gorilla Waterproof Patch & Seal Tape
  • BEST FOR LEAKS: LR Liquid Rubber Peel and Stick Seam Tape
  • BEST FOR RV ROOFS: LR Liquid Rubber RV Roof Coating – Solar Reflective
  • BEST FOR FLAT ROOFS: Rubberseal Liquid Rubber Waterproofing Coating

More items...

How do you repair a rubber roof?

How to repair a rubber roof – step by step instructions

  1. Find leaks. To stop the leak, you first need to find it. ...
  2. Clean the surface. You should sweep all loose debris off the patch area – 5 to 10 feet away. ...
  3. Apply EPDM Primer. The next crucial step to effectively fix your leaks is to apply EPDM Primer. ...
  4. Patching a field hole in a rubber roof. ...
  5. Patching Outside Corners – Skylights, Chimneys, Curbs, etc. ...

How to repair a rubber EPDM roof?

  • Allow the adhesive to dry to a tacky surface. ...
  • Apply the EPDM patch: Starting at one end and with a helper to keep your repair strip straight, apply the repair strip, adhesive down, to the repair area, rolling it ...
  • Roll the EPDM: Finish rolling down the repair strip flat in place

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Can you repair a membrane roof?

Install the Repair Patch Using a glue-down patch: Apply a single-ply EPDM adhesive to the back of the patch and to the roof surface in the patch area, following the manufacturer's instructions. Allow the adhesive to flash off until it is no longer tacky to the touch.

Can you reseal a rubber roof?

Use a 3-inch paint roller to apply rubber-to-rubber contact cement to one half of the outlined repair area, and to one half of the underside of the rubber patch. Wait about 10 minutes for the cement to dry. 12. Set the rubber patch into place, aligning it with the outline marked earlier onto the roof.

How do you seal a leak in a rubber roof?

3:4211:52Rubber Roof Leak Repair/Sealed - YouTubeYouTubeStart of suggested clipEnd of suggested clipLook at that there's a cut in the roof. And they just patch it with a tape. Amazing yes you have toMoreLook at that there's a cut in the roof. And they just patch it with a tape. Amazing yes you have to nail the the screws in that standing up like this.

How do you repair a rubber roof in the rain?

0:058:09How to Patch a Roof Leak in the Rain with Black Knight Roof RepairYouTubeStart of suggested clipEnd of suggested clipThey call it plastic cement I like to call it tar. Although it's not really tar. This stuff is madeMoreThey call it plastic cement I like to call it tar. Although it's not really tar. This stuff is made by Black Knight I think it's Canadian product you can use it in all weathers.

What is the best sealant for a rubber roof?

BEST OVERALL: LR Liquid Rubber Waterproof Sealant – Multi-Surface.BEST VALUE: Gorilla Waterproof Patch & Seal Tape.BEST FOR LEAKS: LR Liquid Rubber Peel and Stick Seam Tape.BEST FOR RV ROOFS: LR Liquid Rubber RV Roof Coating – Solar Reflective.BEST FOR FLAT ROOFS: Rubberseal Liquid Rubber Waterproofing Coating.More items...•

Does Flex Seal work on rubber roofs?

Flex Seal will adhere to almost any surface including wood, metal, aluminium, plastic, fibreglass, rubber, or vinyl or just about any dry surface ( or even wet). It works best on dry surfaces, but if you are dealing with a leak in rainy weather, you can still stop the leak.

Can you use roof cement on a rubber roof?

EPDM, or rubber, is not compatible with asphalt based products. This includes any type of roof cement flashing as well as any type of asphalt based roof coating including aluminum roof coating. These types of products should not be used to maintain or repair an EPDM roof membrane system.

Why is my rubber roof leaking?

Leaks in EPDM roofs can happen for several reasons, including: punctures in, or damage to, the membrane. shrinkage. incorrectly installed or improper flashing.

How do I stop my roof leaking in heavy rain?

How to Stop a Roof Leak in the Rain: 7 Key TipsFind the Source. In order to prevent a ceiling leaking from rain, you must understand what is allowing water to get into your home. ... Clear the Area. ... Apply Roofing Tar. ... Use PE Plastic. ... Install New Shingles. ... Use Tarpaulins. ... Seal Joints. ... Stop Your Roof Leak.

How do you reseal a flat rubber roof?

1:2911:16Use this Flat Roof Coating to Repair/Fix leaks - YouTubeYouTubeStart of suggested clipEnd of suggested clipGo just coat it with a the silicon seal i'm using this stuff let me show you just coat it with this.MoreGo just coat it with a the silicon seal i'm using this stuff let me show you just coat it with this.

How do you repair a rubber roof in cold weather?

3:215:02WINTER RUBBER ROOF REPAIR - YouTubeYouTubeStart of suggested clipEnd of suggested clipSince there is an overlap make sure you go first over the seam. In the center where the overlap isMoreSince there is an overlap make sure you go first over the seam. In the center where the overlap is to get as much air stylus a bond in there you see cam. Then just take your roller.

How do I repair EPDM rubber?

1:482:57Repair a Damaged EPDM Rubber Roof- No More Leaks! (Easy How-To)YouTubeStart of suggested clipEnd of suggested clipCover over the mark line slightly with the primer. So you don't get a dry edge. So with the primerMoreCover over the mark line slightly with the primer. So you don't get a dry edge. So with the primer it does have to be dry. So once you've applied.

How often should you seal a rubber roof?

Of course it's case by case, roof by roof, but the recommendation is to reseal your roof each and every year. Every 10 years it is recommended to replace the entire roof, failure to do so will cause leaks.

How often should you coat a rubber roof?

Typically, a built-up roof will need routine maintenance and re-coating every 4-6 years. Ponding areas may need more frequent re-coating. Built-up roofs should be checked at least once a year for developing issues.

Should you coat a rubber roof?

You don't need to coat a rubber roof. The EPDM membrane is a waterproofing sheet and is the final and top layer. An EPDM rubber roof sheet is incredibly durable and boasts a number of properties that keeps it protected from weather conditions.

How do you maintain a rubber roof?

Here at Rubber4Roofs we've put together some tips on how you can maintain your rubber roof to extend its life even further.Periodically carry out visual checks. ... Sweep your flat roof to remove any debri. ... Check your roof for blisters. ... Maintain Surrounding Trees. ... Clean Your Rubber Roof.

How do I repair a rubber roof?

The most essential part of the job is proper preparation. I recommend that you do the work when outside temperature is 40 degrees or higher. In lower temperatures, the EPDM primer may not cure properly. However, if needed, this can be done even in the winter.

How much does it cost to repair a commercial roof?

Commercial repairs start at $750. Commercial can be anything from a small convenience store / gas station roof to an office / apartment building, or a strip mall. Typical cost for a commercial repair is $1200, if you do not have a maintenance contract.

What is used to adhere rubber to rubber?

EPDM Primer or glue -this is used to adhere patches and flashing to rubber membrane. Lap caulk / sealant – used to seal the edges of a patch. Note, I do not use and do not recommend the use of EPDM Glue, because it is an older and not very efficient method.

How to patch a hole in a field?

1) To apply a patch to a field hole, make sure that your patch is at least 6×6″ for a pea-sized hole. For large holes you will need at least 3″ overlap on each side. 2) Once the surface is cleaned and primed, take your patch and trim corners if necessary (all patches must have rounded corners, to last a long time).

How big should a patch be for a sandbox?

Cut a piece big enough to overlap the corner at least 4″. The ideal size for this is 9×9″ or 12×12″. However even 6×6″ or 6×9″ can be used if no old flashing is present. Round off the corners of the patch.

How to remove peeling membrane?

Next, take a bucket of warm water and wash the surface where you will be applying the patch, going at least 18″ away from the “hole” or seam void. Use a scraper if necessary, but try not to rip / damage the membrane surface. Use rags or a heavy brush to remove dirt.

Where do leaks occur on a roof?

Most leaks occur in certain spots – low water pooling areas, loose seams, on corners of chimneys / skylights. Also, sometimes there are holes in the roof that you will need to find. If you have water pooling on your roof, and there is a seam / overlap going through that area, chances are you have a leak there.

How old is a spider crack on a 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.

Can you paint a flat roof with silver coating?

Don’ts for flat roof repair on a Torch Down. Do not use roofing cement or tar from Home Depot or a Hardware store. Do not paint the roof with Silver Coa ting 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.

Does a rubber roof go bad?

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 ...

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