By Chega
Lancashire,
United Kingdom 
Anyone recommend these advertised greenhouse shading paint claims to shade but let in light ,rain won't wash it off,yet you can wipe it off with a cloth in the Autumn .?
1 May, 2017
hi chega, any shading will reduce the amount of light entering. I find that better ventilation helps reduce the heat produced so I don't use shading.
I assumed it was painted on the inside and then rubbed off. this is correct about it not washing off and just rubs off. bit like the muck on my windows :o)
1 May, 2017