In the past fifty or so years, modified bitumen roofing has advanced from being an exploratory invention to one of the most frequently used commercial roofing systems in the roofing industry. Its toughness, durability, and somewhat ease of installation has made it the roofing material go to for millions of roofing projects all over the world. However, what is modified bitumen roofing, and why is it unrivaled to other types roofing material?
This post goes into depth about MB roofs, discussing what it is, identify the different types of modified bitumen, and the benefits, so you can make an sensible decision about if a modified bitumen roof is right for your business.
What is Modified Bitumen Roofing (MB Roof)?
Modified bitumen is deemed to be the revolutionary relative of the built-up flat roofing systems (BUR) that have been utilized on low-sloping roofs for over one hundred years. It is made up of asphalt in combination with plastic or polymerized rubber, then backed with fiberglass creating a rugged-yet-pliable waterproof layer.
This kind of roofing is mainly utilized on flat or low-sloping commercial roofs. Subject to the kind and material, these layers can be installed being part of a two-layer system or as part of multi-ply systems.
Application Techniques for Modified Bitumen Roofing Systems
Modified bitumen usually comes in layer form, in rolls that are applied directly onto the substrate using an adherent. The material can be cold-adhered, heat-welded, or in many cases, self adhered (as with some Polyglass’ leading products featuring ADESO® self-adhering technology).
Many modified bitumen membranes might also be attached mechanically. A lot of applications require at a minimum 2 layers (a bottom layer and a cap layer), but in many cases, it may be applied in a multi-ply system of 3 or more layers.
Types of Modified Bitumen Membranes
Modified bitumen usually falls into one of two types: SBS and APP.
SBS means styrene-butadiene-styrene, but many think of these membranes as “flexible” or “water resistant” asphalt. These membranes are a combination of asphalt and polymerized rubber for natural flexibility and pliancy. SBS is an ideal choice for buildings of which roofs contract and expand with severe temperature fluctuations, in addition to roofs subjected to high winds.
Commonly referred to as “plastic asphalt,” atactic polypropylene or APP membranes consisting of asphalt mixed with plasticized polymers that turn elastic under higher temperatures. APP is UV ray resistant and is a good choice for buildings in search of a “cool roof” effect.
What are Benefits of Modified Bitumen Roofing?
- Resistant to tearing. MB offers excellent durability and toughness, making it resistant to tearing from weathering, debris, and even continual foot traffic.
- When correctly installed, modified bitumen offers some of the best waterproofing protection of any roofing material in the industry. Unnecessary layers increase this quality even more.
- Easily installed, repaired, and maintained.MB is easy to maintain, and should it tear or leak, it can be easily repaired.
- Modified bitumen contracts and expands with fluctuating weather conditions without losing durability.
- Energy-efficient. Specific kinds of modified bitumen offer high resistance to UV rays, and reflect the sun’s rays for decreased energy bills.
George & Alex Roofing and Waterproofing in New York
At George & Alex Roofing and Waterproofing, we know choosing a Roofing Contractor in the New York Area is a tough job. We are here to help make it easier! Locally owned and operated, George & Alex Roofing and Waterproofing has been providing roof installation and roof repairs throughout the surrounding New York areas since 1995. With each new roofing project, we strive to provide professional, timely service at a fair price. Contact George & Alex Roofing and Waterproofing right here!