Brian Gaff pretended :
Now my plastic gutters have been up for some years, and I had them done by a
professional. OK they tend to crackle a little bit in the sun, but just
recently the crackling is more like loud cracks at variable intervals and if
I'm attempting to catch up on sleep during the day its very um awakening. Is
there anything I can do to quieten them?

Brian

When they were new, they would have slid noiselessly. Now they are a
little older, they are a older they are sticking and suddenly releasing
with a bang. As others have said, they need some form of lubricant to
allow them to slide more easily.

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Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk