Roof Paint Blistering

Poor substrate preparation to eliminate unsound aged paint films.

Roof paint blistering.

Another way to minimize blistering is to utilize a cool roof coating such as ge enduris coating in white. The number one rule for preventing commercial roof blisters is to use dry materials in dry settings. Another blister prevention tip is to make sure your materials have firm contact between them for. Coating roofs too soon after heavy rains or washing leaves roofs vulnerable to blistering as does coating roofs with frost or condensation present.

There are differing opinions as to the damage that can result from blisters and bubbles. This will reduce water vapor development decreasing the incidence and severity of blistering. Blisters often occur when excessive heat damages the roofing materials. The type of paint blemish you describe also known as blistering is a result of the paint losing its adhesion to the base coat of paint or substrate the underlying surface such as drywall.

How to prevent roof blisters keep dry. Recoating tinted roofs coated with a dark color or asphalt emulsion on a hot day also can result in flash drying and blistering. If it is determined that blister removal is required the following procedure should be followed. Inspect the membrane for possible.

When you have no shade to block direct sunlight to a roof small blisters can form. If moisture level in timber is over 15. Coating roofs just before it rains is poor timing. Using a white colored coating will help to keep roof temperatures down.

What causes a blistering roof. Moisture in the substrate e g. In summary blistering and bubbling are common coating problems that occur for several different reasons. While this article presents and discusses the osmotic mechanisms that produce blisters bubbles have several causes.

Remove the membrane from the blistered area down to the existing substrate. If water infiltration is suspected open the membrane and inspect the insulation. Whether you have a.