My old roof had gone a bit warped last year in the sun, so I spent the other day re-making a new roof. This time with anti-reflecting materials... i.e., some hardboard that was laminated white from Wicks ;-)
My old roof was just the painted perspex, and it used to let a lot of heat in. Now the temperature has dropped by about 15-20 degrees :-)
I got the work done just in time, the other week we had a whole day of rain and the roof worked super.
Below is a picture of the scope in action.
I like this roof, I can have a section open at a time, depending on what I'm doing, therefore it's much more snug.
The Cardoon's getting big!