Why Choose a Modified Bitumen Roof System
One of the most common types of commercial roofs consists of modified bitumen materials. A mixture of fiberglass, polyester, stone or a composite of these substances reinforces this roof system.
Durable in Extreme Weather
Even though it’s lightweight, it expands and contracts. This allows it to stay intact and not crack even when temperatures drop to below freezing. Although it does allow enough room for letting air breathe through it, the surface still repels water and holds up against wind and during moderate hailstorms.
This doesn’t mean you’ll never have to repair or replace a modified bitumen roof. However, a roof that has both flexibility and strength could last you at least 20 years or more in between maintenance sessions.
Easy Repair and Maintenance
The lightweight of a modified bitumen system makes repair and maintenance easy. If you need a section replaced, it’s usually easy to swap out the old portions and place the new. Since it comes in a roll, that also helps you apply it easier and cut off the pieces that you need to repair.
Resists UV Light
This UV protection layer often comes built into modified bitumen sheets. However, you can also have reflective materials added as you install your roof system. Either way, it fights off sun rays that could change the rooftop color or weaken its strength. The UV coating can extend the length of time your roof lasts.
Reduces Cooling and Heating Costs
The UV protective layer and insulation added to your modified bitumen roof regulates your indoor temperatures. It reflects heat away from your building interior in the summertime. A similar action takes place in the winter. The material combines solidity with flexibility that keeps out drafts and prevents cracking.
Modified Bitumen Roof Composition
It typically includes several layers, one of which insulates according to the R-Value appropriate for your climate region. For instance, Atlanta businesses typically use an R-8 for all upper insulation, and this could include roofing materials.
Additional modified asphalt roofing bitumen systems include a waterproof membrane for protection against leaks. Furthermore, it’s the added rocks or fiberglass and polyester that help fight off UV rays and control temperatures along with any other protective coating a roofing contractor might apply.
An additional component of a modified bitumen system includes strong adhesive. You have to make sure it sticks well to your roof deck. In addition, your commercial roof should seal well around its perimeter, which the flashing materials do as they connect to it.