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Types of Flat Roof Repair

If you have a flat roof, chances are, you're going to need to repair or replace it sooner or later. By design alone, a flat roof is prone to collecting idle water until it evaporates, giving it more time to find weak spots and enter the structure. So what are your options if your flat roof needs repair?

Spray Applied Coating

Spray applied coatings are a great option for a flat roof. There are 3 main options for flat roofs: Silicone, Acrylic, and Aluminum. These are all applied in liquid form, and allowed to cure once in place. The benefit to these types of coatings is that they can be applied seamlessly, thus reducing your potential for leaks and interior water damage.

Built-up Roof

Also known as BUR, this flat roof application has stood the test of time. Made from tar and gravel, this type of installation is an excellent insulator and provides superior fire resistance. This flat roof type can be easily repaired by spot treatments with additional tar, reinforcing mesh, and new gravel. 

It's important to note that this type of flat roof material is extremely heavy and if this is an older flat roof, have your structure examined to make sure it can still handle the extra weight.


EDPM, or Ethylene Propylene Diene Monomer, is another flat roof material option. This is a synthetic rubber made with recycled materials. This is a popular option for 3 reasons: 

  • Durability
  • Easy Installation
  • Outlasts Metal Counterparts

There are basically two types of repair methods. A splice adhesive may be applied directly to the existing membrane or the peel & stick method. The latter is not only a quicker repair but longer lasting as well.

Modified Bitumen

With this type of application, the Modified Bitumen is rolled across the roof and secured to the structure with a blowtorch as it's rolled. Of course, this type of installation can raise some fire concerns. In recent years, new and safer installation methods have been found, so be sure to discuss various installation methods your contractor can perform. 

If your installation team isn't well versed with this type of installation, you could certainly be facing fire damage or worse. But, if you are working with an experienced installation team, your new Modified Bitumen flat roof installation will be a quick and simple one that will help your structure reflect heat with an extended lifespan. ©

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