Flat Roof Felt Bubbling

Water buildup combined with heat from the sun can cause shingles to.

Flat roof felt bubbling. Flat roofs often require more maintenance than pitched roofs because the water and debris don t roll off the roof as easily. Small bubbles blisters and cracks are a common problems with felted flat roofs. The roofer did not completely cover every square inch of the roof deck with adhesive as he re roofed. Walk the roof and locate any raised ridges or half bulges in the roofing.

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. 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. Sweep away any loose gravel aggregate from the areas where repairs are needed. A roof blister is a raised area where there is a loss of adhesion of the roof.

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.