Shed roof framing options
So I came up with some cost estimates just for the framing members of a cathedral shed roof. If I could do it all over again I’d likely just go the gable attic with cellulose on the attic floor, but too late for that, so it goes.
Following prices do not include anything more then rafter material.
Framed in 2×12= ~$1000
14″ TJI= ~$2,100
18″ Parallel Chord Truss= ~5,000
With the 2×12 and TJI I’d have more cost and time into the rafter tail detail, but probably end up with a better look. At the same time the sistered on rafter tail would take up even more insulation space. With the economy of the 2×12 I could put the extra money into a layer of foam above the roof, and fill the rafter bays with fluff, this would give a very insulate roof. I do have some reservations about sealed roofs.
Parallel chord gives a nice depth for insulation and saves a little time on rafter tails. Price also includes lifting them up onto the roof. Pretty pricey though.
I am trying to attain an above code performing roof, but have limited funds. Having missed the simple approach of a well insulated, vented attic. What do you suppose is the best option?
Spray foam is not really an option as it is cost prohibitive, plus it’s pretty nasty.
Any comments/suggestions appreciated. Especially from builders who have built with the above options.
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