finally found and ordered corrugated aluminum for the roofing. that and found the heavy fiberglass corrugated too. One piece of that may use it on roof for more light...The aluminum special ordered was $3.75 a lineal foot.. Only avaliable in mill finish.. without waiting for it.wanted WHITE....
had factory cut it in 4 foot lenghts... the aluminum is "patterened or pebbly looking"....Panels are 38 inches wide.. so when lapped make 3 feet wide.. Lighter but bit more expensive than corrugated steel....
Company is"Metal Sales" " located in Indiana... had to order thru a distrubtor.. .and they transferred it a bit closer....
Would like to put in on outside too. but dont know how those windows we have would work.. since the windows are rv or camper or topper type units....
need more suggestions.... may or may not take them. BUT will read them.....
Prob will have to use aluminum coil stock to cover outside....vinyl siding prob would not work....
This suggestion may be too late (just found your post about aluminum), but sometimes you can find derelict junk RV's/ travel trailers that are free, cheap you can get parts out/off of....Windows, doors, aluminum eats., (C-list, etc) great way to get a good trailer frame too for anybody still looking....