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I’ve seen what appears to be “bubbles” in the face of some panels at different times of the day. What causes this condition?

April 26, 2017appears causes different Face I’ve Panels seen times

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I’ve seen what appears to be “bubbles” in the face of some panels at different times of the day. What causes this condition?

1 Answer

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“Blisters” can sometimes occur when the exterior face of the panel is exposed to the sun. This condition is caused by the thermal expansion of the blowing agent trapped under the panel face and is a common phenomenon of foamed-in-place panels. Blisters are easily repaired and are not cause for product rejection.