Old paper masking can be very difficult to remove. Often it comes off in little bits and pieces. In answer to a recent question, Sign Builder Illustratred Columnist Jim Hingst recently posted on his blog some tips for removing masking from plastic sheet:
“Usually removing the paper surface protection masking on plastic is easy. It is simply a matter of starting in a corner and rolling it off of the surface. Many manufacturers and fabricators recommend rolling the masking around a cardboard tube.
“Over time the adhesive can build in adhesion to the surface of the plastic. Masked plastic sheet, which has been exposed to heat, can be extremely difficult to remove. If the masking is exposed to sunlight, the adhesive will crystallize and will be impossible to remove.”
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