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Roof Window Plastic Discolouration
Hi! I just noticed that the plastic on two sides of a roof window has gone this strange maroon colour and on one of the other two sides there's some bulging that has appeared. I've had a look online and found one suggestion that it's some kind of mold related to condensation but this window never suffers with condensation so I was wondering if anyone here has run into this before or has any ideas what it is / if it can be fixed in any way?
