Roof Paint Blistering

Another blister prevention tip is to make sure your materials have firm contact between them for.

Roof paint blistering.

If it is determined that blister removal is required the following procedure should be followed. Poor attic ventilation is another reason blisters will appear. Whether you have a. 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. If moisture level in timber is over 15. 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.

Remove the membrane from the blistered area down to the existing substrate. This will reduce water vapor development decreasing the incidence and severity of blistering. In summary blistering and bubbling are common coating problems that occur for several different reasons. When you have no shade to block direct sunlight to a roof small blisters can form.

Moisture in the substrate e g. What causes a blistering roof. The usual causes of blistering include. While this article presents and discusses the osmotic mechanisms that produce blisters bubbles have several causes.

Dark colour which absorb a lot of heat applied over light colours will force the moisture air vapour to the. Coating roofs just before it rains is poor timing. Using a white colored coating will help to keep roof temperatures down. Inspect the membrane for possible.

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. Poor substrate preparation to eliminate unsound aged paint films. Blisters often occur when excessive heat damages the roofing materials.