Wool is a common phenomenon, and nothing to worry about - it is easy to repair. A small hole is quickly fixed with tape. Larger holes are covered with shrink plastic taped over the hole, which you then shrink carefully so that it is even. Tape is a very useful tool with many uses. Strong and with great adhesion, it sticks well to all surfaces.
Tape is used for all types of packaging work for sealing holes, sealing joints and mounting doors. It has no UV protection and may peel off after approx. 1 year in outdoor climates.
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