Modified Bitumen Roof Problems

Modified bitumen is a type of asphalt product that can be applied in a number of ways to the roof in both hot and cold temperatures.

Modified bitumen roof problems.

Modified bitumen has a life expectancy of 10 20 years. Modified bitumen is approved for flat roofs with minimal slope but roll roofing is not viable below a 2 12 pitch two inches of rise for each twelve inches of horizontal run with exposed nails or a maybe little lower with concealed nail installation. Modified bitumen roof defects wear signs life expectancy life extension by coating. Bitumen roof advantages and disadvantages.

Additionally hot bituminous and torch applied modified bitumen roofs may experience leaks when a proper moisture barrier is not installed underneath a coping cap on parapet walls according to avoiding common roof installation mistakes a cd rom produced by the center for the advancement of roofing excellence care ltd. The methods of modified bitumen application are self adhesive torched on or hot or cold adhesive. They typically are installed as a one two or three ply roof system. Roll roofing and modified bitumen are both suitable for low slope roofs.

The membrane consists of a multi layer sheet of asphalt with polyester or fiberglass reinforcements and plastic or rubber modifiers. There are many reasons a pitch pocket fails. Modified bitumen roofs are a cross between built up and single ply systems. This article describes common defects found on modified bitumen roofs such as buckling cracking granule loss improper installation details leaks.

Problems with pitch pockets a type of roof flashing used to seal penetrations prevail on all types of roofs but are most typical on built up or modified bitumen roofing systems. Modified bitumen meets and exceeds building and insurance requirements. Manufacturing facilities due to the large number of rooftop penetrations are plagued by pitch pocket problems. Modified bitumen roof life defects wear common defects life of modified bitumen roof effective roof coatings.

In the absence of a proper drainage system set up on a flat roof water is bound to get collected on the surface. Modified bitumen roofs provide durable protection against the dangers of standing or slow to drain water. The durable roofing material is also fire resistant. The most common problems include.

The two most commonly used roofing systems in commercial properties are tpo and modified bitumen. Although not extremely low it is still one of the lowest out of all the roofing materials options available. Modified bitumen roofing has been around since the 1970s and tpo developed later in the 1990s but they both are ideal for all types of weather and have advantages and disadvantages.