I use a Krause Model 121321 12' 300 lbs. folding ladder with a single hinge (lighter than multiple hinge ladders and folds to 6' which fits inside my closed truck bed). I'm 71, 240 lbs. and lean it against the street side gutter to access the roof. I've been using this since 1996 and hope they are still available. Bought it at a local hardware store (big box? cannot remember); made in Roscoe, IL. It is a narrow ladder (14") but has a 31" crossbar at the bottom for stability. I use mine without the crossbar as Krause sent me a couple of extra feet at no charge.