Modified Bitumen Roof Vs Built Up Roof

Bur roof systems have been utilized for over 100.

Modified bitumen roof vs built up roof. In that case it could be set up by the owners of the property without much strain. November 19 2014 9 48pm 1. I had this roof completely torn off and redone bur approx 11 years ago. In the 1970s modified bitumen roofing was introduced to the us roofing market and it quickly caught on.

I have a flat section of roof on my house that needs to redone. Modified bitumen what are bur and mod bit. Benefits of bur and mod bit time tested defense. If needed a base sheet can be fastened to the roof to create a flat and safe work space.

The tar and gravel roof is built up of typically three to five layers of roofing felt. Built up roof membranes bur and modified bitumen mod bit are generally composed of alternating layers of bitumen and reinforcing fabrics that create a finished membrane. I need some advice and or opinions about these types of roofs. The main benefit of this kind of a roof is that the peel and stick material is conducive for diy.

This roof system has two types. Engineered modified bitumen roofing membranes originated in europe in the mid 1960 s and have been used successfully in the united states and canada since approximately 1975. This caused the roof to underperform. Modified bitumen displays the built in redundancy of asphalt built up as well as the uv resistance and flexibility of a modified membrane.

Built up roofing the first layer can be adhered directly to the roof substrate. First although an app modified bitumen roof is designed to resist uv light damage blistering cracking and oxidation a lack of standards led some manufacturers to skimp on the addition of the app modifier. Built up roofing systems were once a popular solution for commercial and other flat or low sloped roofs. Modified bitumen mb roofing is an asphalt based close cousin of the built up roof bur designed for buildings with low slope or flat roof structures.

Strengthened by a polymer reinforced roof wear layer they boast excellent elasticity and flexibility to resist damage. A built up roofing system is installed by alternating layers of bitumen and reinforced fabric. This type of a roof could be installed with the cold adhesives the asphalts or the common torch method. Second although the gravel spread over a modified bitumen roof is intended to offer uv and hazard.

Pros of the modified bitumen. Built up roof bur vs modified bitumen roof torch down roofing construction questions. They mix a modifier with high quality asphalt in lieu of a heavy gravel cover to weather well. Atactic polypropylene app and styrene butadiene styrene sbs.

However these have now been replaced by modified bitumen.