Old 1920s garage has a 1940s cottage butted up, gable end to gable end, against the back of it. Both roofs are simple, single ridge, straight run roofs, ridges run in the same line, and the rafter runs are the same length. Just two separate buildings, butted up against each other and until this week covered in one long, huge, monolithic rolled-roofing covering. 20’ wide, 65’ long rolled roofing, ugliest thing you ever saw
Ok, so hopefully you have the picture in mind. The problem is that tearing off this covering revealed that where the garage roof ends and the cottage roof begins there is a drop of 2 inches at the ridge and a varying distance drop all along the rafter run. Filling this gap was fiberboard 2" thick, 2’ long and shaved to a wedge to fill all along the roof line and make a smoother transition.
So, I’m going to shingle both roofs but between them I want to add some architectural feature that’ll solve the problem between the two roofs better and also break up the huge expanse of same-same roof.
I’m thinking about building a parapet, a low-slung monitor roof or low cupola with a low wide base across the entire width of the back of the garage roof. This’ll create a large area to flash against on both sides and break up the expanse.
Sound good? Alternatives? Designs? Some place, any place, to find designs, construction details on parapets, monitor roofs??? Please.
Or do you have experience building these and can help a newbie?