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.
Diy solar collector panel.
You can use tempered glass but it will make your solar panels much heavier.
The back of the solar panel will be insulated properly with a rock wool or styrodur of 20mm 0 8 inch.
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.
Diy solar panel assembling the case that will nestle the solar panels will be realized out of wood of 0 6 in 15 mm while in the front a 0 12in 3mm poly carbonate or plexiglas sheet or tempered glass can be used.
Tools and materials table saw hand saw drill press power drill 3 4 drill bit 1 hole saw exacto knife tape measure screw driver digital thermometer caulking gun for silicone adhesive coarse round file.
Glue and screw the sides together a b and c.
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.
We know about these solar heaters which are used to heat water of a pool and many of you came up with the idea of turning them into similar flat plate solar.