I have a 12 X 20 storage that we bought from a rent to own company. It was a used one that had been turned back in. It already had insulation in it but no dry wall. I didn't have the money for dry wall so we went to a gun shop that gave shooting lessons and they saved me the cardboard targets that was used. I stapled them oven the walls. Don't look good but it covered the insulation. My daughter in law gave me some commercial tiles that was left over from a job she did and she laid the down for me. My husband did the wiring for me. It's still not finished but it works for now.
Sorry about the double image.
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