I did alot of checking and i found out the flat steel roof flexes the most. I found this sealer just for this type of flexing @ Home Depot for $12 a roll and it was 2Xs as wide as any i found at the RV centers. To get a good bond i used denatured Alcohol and a few rags and a floor roller.

Owner caption December 2007 · Photo 1960 of 2329