A blister arises by wrong process in the isolations of the panels.

If a problem arises by manufacturing in the isolation, it will come forward at high temperatures. When the panels are warmed by the Sun there arise degassing inside the panels. These gases have to go somewhere. The gases are seeking the path of least resistance and that is at the bonding between the isolation an the steel-strip. This creates a blister.

There are multiple solutions to remove the blister.

The starting point of reparing a blister is the visual appearance of the panel both on the inside as on the outside to keep in its original condition. Also the constructive of the panel and the strength of the panel should be kept in tact.

To ensure the strength of the panel we glued the panel under high pressure. The advantage of this is that you can’t see enything on the inside of the panel. On the outside of the panel the blister is kept as small as possible so that the damage to the panel, after repair, is almost zero.

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