Flat Roof Felt Bubbling

Sweep away any loose gravel aggregate from the areas where repairs are needed.

Flat roof felt bubbling.

There are four main reasons why blisters bubbles occur on your flat roof. Small bubbles blisters and cracks are a common problems with felted flat roofs. A roof blister is a raised area where there is a loss of adhesion of the roof. If they are spotted early there is no reason why they need cause serious damage and no reason for you to replace all of the felting.

Flat roof blisterts bubbles occur as the direct result of hot air that rises from the crawl space between the top floor ceiling and the roof deck of the home. The roofer did not completely cover every square inch of the roof deck with adhesive as he re roofed. Water buildup combined with heat from the sun can cause shingles to. I show you some of the problems with asphalt flat roofs and felt flat roofs these old roofs have blisters forming in them sometimes called bubbles because of water vapour getting trapped under.

This area can fill up with air or water to form a blister which looks like a bubble on your roof.