One thing I did omit from my net curtain idea (which I have used for a few years now). If you have dull days you can remove the nets, so the plants still get some light on them. We open and close our greenhouse every morning and evening, so we can remove the net as and when the weather is dull. With paint on glass you cannot wipe it off every time the weather is dull or rainy.
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Thanks ++ Guernsey Donkey2, Good idea - charity shops usually have loads of these as well.
One thing I did omit from my net curtain idea (which I have used for a few years now). If you have dull days you can remove the nets, so the plants still get some light on them. We open and close our greenhouse every morning and evening, so we can remove the net as and when the weather is dull. With paint on glass you cannot wipe it off every time the weather is dull or rainy.
That's a very good point - we did have a very dull and wet summer a few years back and I thought about that then