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Need Help Warped HDU sign

btvenom

New Member
Our shop has a client that wants us to repair an 36"x96" HDU panel we installed 2 years ago. The sign still looks great but has started to cup away from the wall. They sign was painted with Matthews 6001 polyester primer a satin map paint. We made sure at the time to evenly coat all sides. Other signs we have produced are fine and this one seems to be a one off. Is there any good way to unwarp the panel? We were thinking of heating the panel back flat and applying another coat of paint to the back.
 

John_Smith

Enjoying retirement in Central Florida
My first experience with a large HDU sign was the same. It peeled completely off the wall.
After a few years, "we" (the HDU world) discovered some tricks. #1 = cut some grooves in the back with a circular saw to allow movement. #2 = apply the same amount of primer and paint to ALL surfaces. Edges, front, and back.
Can you show us a photo of the sign? How is it mounted to the wall ???
 
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