Before you spend money on your roof, make sure that you know all your options. To start with, here are different types of flat roofs:
Built Up Roofing
BUR or Built Up Roofing is installed by using multiple layers of hot asphalt soaked roofing felt embedded in bitumen applied with a hot mop.
Going back about 120 years, the grandfather of flat roofs is the built-up roof or BUR. Built up roofs have solved the low pitch roof problem for ages, a challenge that asphalt shingles could never handle.
Built-up roofs are just that, built up. They are installed using several layers of a special type of roofing felt that has been asphalt impregnated and embedded in bitumen applied with a hot mop. Source: TheSpruce
EPDM (short for ethylene propylene diene monomer) is a true rubber. The durable material resembles an inner tube, but it’s engineered to resist damage from sunlight. EPDM can be mechanically anchored with fasteners, ballasted with stone, or glued.
Pros: Homeowner-friendly installation. The material’s relatively light yet highly resistant to scuffs and tears. Leaks are easy to patch.
Cons: The standard black material absorbs heat, and light-colored coatings (recommended in warm climates) add 30% or more to the cost. Even the black version, though, costs more than BUR or modified bitumen. It’s also more vulnerable to punctures than other choices. Source: ThisOldHouse
A bitumen is a term applied to both coal tar pitch and asphalt products. Modified Bitumens were developed in Europe in the 1970s when Europeans became concerned with the lower performance standards of roofing asphalt. Modifiers were added to replace the plasticizers that had been removed by advanced methods in the distillation process. The two most common modifiers are APP (atactic polypropylene) from Italy and SBS (styrene-butadiene-styrene) from France. The United States started developing modified bitumen compounds in the late 1970s and early 1980s. Source: Wikipedia
Find out the type of roofing that will best suit your needs when you call us today!
Kerrisdale Roofing & Drains
8279 Ross St, Vancouver, BC V5X 4W1