Posted: Today at 08:34
I wouldn't be without my automatic window arms, I believe there is a sort of gel inside the arm and when the weather warms up this gel expands and pushes the window open and when the weather cools down the gel contracts and the window shuts. I've used this method for years and I can go out for the day and not worry about the windows being open or closed if the weather turns warm / or cold.
I hate the painted on shading it looks such a mess when you try to get it back off the glass, I use greenhouse shade netting, but what ever shading you use remember when in place it cuts down the light level so don't put it up too soon.
most of all enjoy your greenhouse, happy growing. 🤗