Modified Bitumen Roof Specialists

Modified Bitumen roof systems are asphalt based and provide superior waterproofing characteristics. The typical life span for these systems is about 10 to 20 years. Modified Bitumen roofs are installed as a two ply system most of the time and are always fully adhered.

These roof systems are created using asphalt that has been modified with a polymer to create plastic or rubber like properties. The modifiers provide increased resistance to brittleness, cold temperatures and increased elasticity and strength.

Modified Bitumen Roof Systems

There are a variety of surfacing options for APP and SBS modified roofs. They include factory applied mineral surfaces, gravel surfaces, smooth surfaces, and “cool roof” coatings, which are highly reflective coatings that can help save on cooling costs.

Modified Bitumen (MB) roofing is an asphalt-based; a close relative of the Built-up-Roof (BUR) designed for buildings with low-slope or “flat” roof structures. Engineered modified bitumen roofing membranes first appeared in Europe in the mid 1960′s and have seen success in the United States and Canada since about 1975.

The Look & Protection You Want‎

We deliver peace of mind to building owners and facility managers by managing roofing and building life cycles for customers in all industries. With a choice of cold or hot application and a range of performance levels, each provides exceptional waterproofing protection for your building

Modified Bitumen Roofing Specialists

The APP modified asphalt is reinforced with a polyester mat and manufactured into a roll product. These membranes have extra asphalt on the back side which allows it to bond to the substrate through applications such as heat welded or torch applied methods.
  • Torch Applied – an open flame is used torch to melt the bottom side of the sheet  as the APP modified membrane is applied.
  • Heat Welding – The welder is used to blow out hot air that fuses the back side of the membrane to the substrate when it is applied. This method is a safer alternative than torch applied, as it is less of a fire hazard.
  • Hot Asphalt application – Hot Asphalt is applied to the felts or substrate with the use of a machine or it can be physically mopped down and then the membrane is laid over the hot asphalt. The hot asphalt acts as the adhesive and allows the membrane to bond to the substrate.
  • Cold Adhesive – The modified membrane is set in a cold process using specially formulated asphalt based adhesives when it is being applied
  • Self Adhered – The bottom surface of the membrane is covered with an adhesive and release paper. Once the paper is removed, the adhesive allows the membrane to stick to the substrate without any more adhesives.