Roof Paint Blistering

Whether you have a.

Roof paint blistering.

Dark colour which absorb a lot of heat applied over light colours will force the moisture air vapour to the. There are differing opinions as to the damage that can result from blisters and bubbles. What causes a blistering roof. This will reduce water vapor development decreasing the incidence and severity of blistering.

Moisture in the substrate e g. How to prevent roof blisters keep dry. If water infiltration is suspected open the membrane and inspect the insulation. Coating roofs too soon after heavy rains or washing leaves roofs vulnerable to blistering as does coating roofs with frost or condensation present.

In summary blistering and bubbling are common coating problems that occur for several different reasons. Another way to minimize blistering is to utilize a cool roof coating such as ge enduris coating in white. While this article presents and discusses the osmotic mechanisms that produce blisters bubbles have several causes. Poor attic ventilation is another reason blisters will appear.

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. When you have no shade to block direct sunlight to a roof small blisters can form. Poor substrate preparation to eliminate unsound aged paint films.

Coating roofs just before it rains is poor timing. 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. The usual causes of blistering include. If moisture level in timber is over 15.

Using a white colored coating will help to keep roof temperatures down. Remove the membrane from the blistered area down to the existing substrate. The number one rule for preventing commercial roof blisters is to use dry materials in dry settings.