Modified Bitumen

This type of roofing material is a made from alteration of asphalt membrane through the use of different rubber modifiers. Additional of solvent helps to change the chemical composition of the roofing material. Hot-mopped application and heating methods are used to modify asphalt seams into an extensive roofing membrane. For purposes of durability, the addition of modifiers such as fiberglass and polyester fiber take place to change both the structural strength and chemical composition of bitumen.

Modified bitumen takes two different manufacturing methods. The most popular method is called styrene-butadiene-styrene (SBS), which allows the bitumen membrane’s flexibility; its capability to contract and offer strong expansion. The second method used in the modification of asphalt roofing is attactic polypropylene (APP), which helps in increasing the aging ability of the roofing membrane; it is the process that determines the durability of the roofing material. The use of cold adhesive or torch methods is used in the installation of modified bitumen products.

The advantages of modified bitumen products include structural durability; this material can take more than fifteen years before subjecting the roof to any repairs. Modified bitumen is also resistant to changes in weather conditions such as varying humidity, rain, heat and wind. The repair of this product is easy and fast. Finally, the material is flexible since it allows maximum expansion or contraction.

Using a professional Miami roofing company is important because they will be in a position to give warranties that are in line with the durability of the product. Professional contractors will also provide standardized and professional installation of modified bitumen. Licensed contractors are also able to select quality modified bitumen at reasonable prices. Skilled roofing contractors are also able to deliver quality repair, in cases of roof damage.


Rossi, Cesare Oliviero, et al. "Polymer modified bitumen: Rheological properties and structural characterization." Colloids and Surfaces A: Physicochemical and Engineering Aspects 480 (2015): 390-397.

Xia, Tian, et al. "SBS modified bitumen in the presence of hydrophilic or hydrophobic silica nanoparticles." Construction and Building Materials 153 (2017): 957-964.