What Is A Modified Bitumen Roof?

Modified bitumen roofing systems, often referred to simply as MB roofing is a solution used on low-sloping, almost flat roofs – here are some things that anyone looking for a new material for a flat roof should know about.

The Composition and the Installation of Modified Bitumen Roofs

MB systems usually consist of five layers: the insulation, necessary for giving the roof its thermal resistance; the modified base sheets, nailed to the roof deck; the modified bitumen membranes made from polymers reinforced with fiberglass or polyester, the adhesive layer and the surfacing, necessary for protection from UV radiation and the other elements as well. Roofers can choose from multiple methods to install modified bitumen roofs: the layers can be hot-mopped or installed using torch-application methods; they can be installed using cold processing and the modified bitumen sheets are also available in self-adhering versions.

The Most Important Benefits of Modified Bitumen Roofs

The special structure of modified bitumen roofs, consisting of multiple layers of reinforced materials, ensures strength as well as flexibility – these structures are very resistant to any type of physical damage, including impact.

The solution also improves the energy-efficiency of the building it is used on – the materials used for building modified bitumen roofs reflect heat, thus reducing the amount of energy needed for cooling the building in summer. Modified bitumen is an energy-efficient material in itself, but with insulation, the feature can be further enhanced.

A local Naples roofing company confirms that modified bitumen structures offer superior water-resistance as well. The techniques used for building these roofs and the materials ensure a tight connection between the layers and seamless configuration, which prevents the penetration of moisture into the deeper layers of the roof, thus eliminating the issue that is the most concerning in the case of flat roofs: water ponding.

Naples roofing company experts install flat roofing

Modified bitumen roofs are easy to install and easy to maintain as well. The installation process is quick and straightforward, maintenance consists mostly of quick inspections and cleaning, while repairs are also very easy to do.

Modified bitumen roofs also offer a wide range of options in terms of appearance – the granules that make up the topmost layer of the material are available in many colors, allowing you to choose the hue that best matches your building design.

The roofing solution also stands out in terms of environment-friendliness – most modified bitumen sheets are made from recycled materials, so the choice will reduce the environmental impact of your entire building.

Other Aspects to Consider Before Choosing Modified Bitumen for Your Roof

Before you choose modified bitumen, there are a few other things that you should also know about:

  • Lifespan – modified bitumen roofs can efficiently provide protection for about 10-20 years, after which they need to be replaced;
  • A strong odor during and right after installation – if you choose modified bitumen, you should be prepared that the material emanates a very strong smell while it is being installed and for a couple of days after the installation is complete as well, therefore you might want to consider relocation until the roof cures completely.