Office - 770-338-5767 | FAX - 770-338-5764

Modified Bitumen Roofing


Our experts will solve your roofing problems in no time.

Make An Appointment

Modified Bitumen Roofing Systems

When it comes to commercial roofing, you need a roof that is durable and that lasts. One of the most popular options in the industry is something called modified bitumen roofing.

Modified bitumen is the term used to describe an asphalt-based roofing system that can be applied to your roof in a number of different ways in any type of weather. There are a number of advantages of choosing modified bitumen roofs over other types of membrane roofing.


Tri-Tech Roofing & Coatings, Inc. works hard to be one of Atlanta's top commercial roofing contractors. To do this, it is essential that we give our customers high-quality roofing systems that match their business needs along with technical expertise that comes with decades of experience.

When it comes to business, we value the relationships we have formed over the years. It's the reason our customers come back to us for all their commercial roofing needs.

What is Modified Bitumen?

Modified bitumen is a common type of membrane roofing made primarily from asphalt. However, it is modified using layers of fiberglass or polyester to add durability to the layers of a flat roofing system. It can be made to allow applications in both hot and cold temperatures.

Bitumen roofs have become one of the modern standards in roofing due to its exceptional durability easily allowing it to last for more than 20 years or more. During the installation process whether it’s been modified to be applied through (cold-applied adhesive, self-adhering sheets, or hot-mopped asphalt) any seams generally melt together to help eliminate leaks.

Common Types of Modified Bitumen

In the commercial roofing industry today, there are two primary types of modified bitumen that are commonly used. They are:

APP: Atactic Polypropylene is a thermoplastic polymer made for increased performance. This increases the bitumen’s ability to handle the elements such as increased flexibility in low temperatures, a much higher UV resistance, and increased resistance to flow at higher temperatures. These are generally installed by using a propane torch. The heat is used to soften the bottom of the bitumen sheets turning it into a molten adhesive. When installed this allows the seams to flow together making a waterproof bond.

SBS: Styrene-Butadiene-Styrene is another form of modified asphalt created by making a network of polymer within the bitumen sheets. This gives it characteristics very similar to rubber with much better resistance to aging and weathering. These SBS sheets are generally installed through hot mopping, torching, or even cold application adhesives. These sheets once applied will need some form of an ultraviolet protective coating as they are not made with granule or foil surfacing during manufacturing.

The Advantage of Modified Bitumen Roofs

Modified Bitumen roofs have been around for a lot longer than some of the other rubberized based roofing materials. Because of this, it has a long track record of success. Roofs with bitumen tend to last a long time. It’s typical for these roofs to last 20 years or more.

Roofing systems with modified bitumen can be applied in several ways. Whether it’s applied with self-adhesive sheets or cold-applied adhesives, the seams are melted together to prevent leaks. With other types of roofing membranes, there is a chance that the seams can weaken over time which can create the possibility of leaks. The seamless aspects of bitumen is definitely an advantage.

Because of the strength of the material, bitumen roofs are very durable. We seldom see the kinds of cracks that can develop with other types of roofs. Plus, bitumen is known for withstanding the elements well and is rated very highly against fire, hail or storm damage. Lastly, the warranties with this type of roofing are impressive.

The commercial roofers at Tri-Tech Roofing & Coatings, Inc. have been working with businesses all around Atlanta for the past 30 years. We have long-term relationships with our clients based on mutual respect and trust. Call us today to talk about your commercial roofing needs.

Commercial Roofers That Care About Your Business

Commercial Roofing Done Right, On Time and Beyond Expectations.



Office: 770-338-5767
Fax: 770-338-5764


945 Cripple Creek Drive
Lawrenceville, Georgia 30043

Tri-Tech Roofing & Coatings, Inc.
945 Cripple Creek Drive
Lawrenceville, Georgia 30043

Quick Contact

945 Cripple Creek Drive, Lawrenceville, Georgia