Multiple Ply Modified Bitumen Roof Membrane

Like built up roofing bur it is usually installed on low slope and flat roof structures.

Multiple ply modified bitumen roof membrane.

Modified bitumen roofing systems. Common flat roof membranes discussed in this article include built up asphalt tar and gravel modified bitumen and single ply membranes like epdm pvc tpo and kee. Modified bitumen roofs have been used in the u s. These reinforced rolled sheets can be adhered by.

Designed for flat or low sloped applications the modified bitumen roofing system has a long proven track record. During the 1950 s sbs modified bitumen also known as torch on roofing was. We also cover spray applied foam and liquid roofing options. Maintenance to sleep at night.

Membrane roofing is often used on commercial flat roofs. What are modified bitument roofs. But how do you know which choice is best for your project. Multi ply modified bitumen membranes have a stable thickness while single ply membranes have annual thickness loss due to weathering.

Modified bitumen roof systems typically consist of one two or three ply systems. It is asphalt based and has multiple layers of composite materials to increase flexibility and durability. Application of this type of roofing is less labor intensive than the built up roofing method that applies several layers to create a waterproof membrane. Both can be used on commercial roofs and the best choice often depends on the business owners roofing needs and goals.

There are two types of modified bitumen membranes app and sbs. Modified bitumen is a type of membrane roofing. Synthetic rubber thermoset modified bitumen and thermoplastic membrane. It contains a base sheet with no granule and a cap sheet with granule protection.

Originally it was primarily used against a building s foundation however it eventually made its way up on to the roof. Environment weather and even the use of the building can affect which adhesive is right for the job. Modified bitumen roof system is a two ply application waterproofing system. Evolved from time tested bur roofs the standard commercial roof application for over 100 years modified bitumen roofs have membranes modified with sbs to attain rubber like.

The most popular version of this was the old tar and gravel roofing membrane. Modified bitumen has been around since the late 1800 s. The shortcomings of single ply and typical asphalt can be largely avoided by using roofing materials that combine multiple membrane layers sealed with an enhanced form of asphalt called sbs modified bitumen. They have 3 types.

Using hot asphalt fused by torching the sheets together or cold applied using adhesives or peel stick.