BUR (Tar & Gravel, Mineral Cap, Mod Bit, Torch Down)
At its core, built-up roofing (BUR) is a multilayered system of felt and asphalt that is sometimes left smooth but more often is topped with either hot-mopped mineral cap or gravel.
Tar and gravel
Although modified asphalt has replaced tar, this type of system is still colloquially known as “tar and gravel.” Multiple layers of asphalt and felt are topped with a final flood coat of asphalt, into which gravel is embedded. Because of Ecodur Roof Coating's superior strength, after removing all loose gravel, these roofs can often be coated without spudding— which can represent a significant labor reduction and help keep your bids competitive!
Mineral cap sheet/Modified bitumen/Torch down
One of the most common looks for flat roofs, these types are characterized by their adhered roofing granules. Ecodur Roof Coating does a great job of soaking past the remaining granules and into the base. Even if a roof is heavily aged and has its fiberglass scrim showing, Ecodur’s incredible resistance to water, UV rays, hail, and anything else nature can throw at it allows it to rejuvenate these roofs for decades of continued service!
Consisting of content from our blog posts, case studies, and video gallery
- Jul 31, 2019
Preparing and coating tar and gravel roofs can be extremely difficult with a traditional roof coating approach. The traditional roof coating system simply does not have enough adhesion to stick to the tar and gravel roof effectively, so the workaround is extremely expensive.
- Apr 1, 2020
We love testing out the extreme adhesion of Ecodur Roof Coating by doing pull tests! This one was done by roofing expert, Jef McCurdy, by placing Ecodur over cap sheet.
- Mar 3, 2021
Do you have a leaky roof that needs to be repaired without closing the business below? No problem!
- Feb 10, 2022
With cap sheet flashing separating at the seams, previous repairs failing, and a ballasted photovoltaic solar panel system, this career training academy had a difficult roofing problem.
Nursing home roofing projects bring up many unique issues. Nursing homes need to run 24/7/365 and tenant disruption is simply not an option. When a nursing home has roof leaks, they need solutions that do not require moving clients out of their living quarters..
Many roofers know that tar and gravel roofs pose unique challenges. They can wear unevenly due to gravel loss. They are a complete mess to tear off and replace...