Posted By robert boedeker
First question is your roof tile or shingle if shingle and heat is an issue you could apply elastrometric paint (white). For the track issue when I did my observatory roll off roof 12'x14' I used 1 1/8" angle welded to 3/16"x4" plate the wheels were 4"v casters all hardware welding material cost $875. Weight of roof 2900 lbs. As of today are temp. is 124 and with are dust storms (finer than flour) I have no problems with binding.