The back of the solar panel will be insulated properly with a rock wool or styrodur of 20mm 0 8 inch.
Diy solar collector panel.
Diy solar project takes shape when i wrote about denise and dan rojas video of their diy solar collector they re building from an old satellite dish commenter luke asked what they were going.
Just as it sounds this design replaces the stack of pop cans in the solar air heating panel with standard eaves trough downspouts painted matt black to absorb the sun s rays.
I have insulated the backside of the solar collector with 20mm 0 8in rock wool.
Paint the collector panel using as thin a coating as possible of high temperature black oil base paint black car exhaust paint is a good suggestion.
Do it yourself pop can solar panel construction housing for diy solar panels is made using plywood 15mm 0 6in thick while its front is a polycarbonate sheet 3mm 0 12in thick.
Glue and screw the sides together a b and c.
Assembly of the solar collector cut the timber treat all sawn ends with a good quality timber preservative.
You can use tempered glass but it will make your solar panels much heavier.