Roof Blistering Definition

Hinkle roofing your local roofing contractor discusses what causes asphalt shingles to blister and what you can do about it.

Roof blistering definition.

A roof blister is a raised area where there is a loss of adhesion of the roof. What causes a blistering roof blisters often occur when excessive heat damages the roofing materials. Membrane systems are most susceptible to blistering because blisters are formed by voids between the plies or at the point between the substrate and the membrane. Asphalt shingles can blister as a result of trapped moisture in the shingles.

The shingles are composed of different layers of material. Blisters or blister rash can be identified by inconsistent bubbles rising up from inside the shingle. A pocket of air trapped between the layers of a roof membrane between the components of a roof assembly or within a layered roofing product such as an asphalt shingle. Although the atlas view is reassuring based on field observation and experience and visible in beginning stages in the photo of an atlas roof shingle above we ve seen early granule loss at the blister site.

Blistering is an asphalt shingle roofing problem that is often mistaken for hail damage and is one of the most common issues residential roofing contractors are called to fix especially during the summer. There are three primary issues associated with blistering. Roof blisters can be caused by any number of problems. This area can fill up with air or water to form a blister which looks like a bubble on your roof.

Built up roofs are particularly susceptible. Construction definition roof blister. So at least on some roof shingles rash blisters may indeed be an indication of a reduced life expectancy. When you have no shade to block direct sunlight to a roof small blisters can form.

In some cases moisture can get trapped within the shingles during the manufacturing process. Poor attic ventilation is another reason blisters will appear. The roofing company co takes a look at what causes asphalt shingles to blister and what can be done to prevent it. Roof blisters can form if workers allow air or moisture to get trapped between layers during roof installation.

Workers or employees can break blisters by stepping on them which can expose the building to leaks. Blistering only occurs in asphalt roof shinglesas it is a byproduct of manufacturing or installation. Blisters are typically small steep sided craters measuring a quarter inch 6mm or less in diameter with no granules visible in the crater. Shingle blistering as a roof defect.

While undergoing the lamination process moisture can be trapped between layers.