How Do You Add On In Addition To A-FRAME Roof?
Question:removing the hole side of roof to add on to my home. scabing in/the addition is there the next step is supporting and bring wall/roof down.
Answers:
Is this an A-frame structure, or a vertical walled house with a standard pitched ("a-frame") roof? In either case, the construction is similar -- just that the A-frame structure is essentially all roofwith no vertical walls. I assume you'll be getting plans done by a qualified architect (licensed architect, not just a designer) or structural engineer.
If the existing roof has solid sheating under the shingles, it can be as easy as removing the shingles a couple feet back from the intersection, nailing valley boards to the existing roof sheating, framing the new new roof as normal up to the point of intersection, putting in shortened rafters ("valley jacks") between the new ridge and the valley boards, sheating the new roof, apply roof felt and valley gutter, and reshingle.
If this is an A-frame STRUCTURE, there's a little more to it, as you'll be removing/cutting rafters at the intersection. Still the same idea as above, but instead of valley board nailed on top of the existing roof, you'll have a valley rafter in the same plane as the existing rafters, and each of those rafters will have to be cut to properly intersect the valley.
Here's a page that describes the process-
http://www.hometime.com/howto/projects/f...
Rafter cuts require somewhat complex compound cuts when you have intersecting rooflines. Especially when the two rooflines have different pitches (fondly refered to as a "bastard roof" by roof cutters). In fact, in framing, cutting rafters is a specialty and roof cutters are the cream of the crop of framers. If you don't have experienced assistance, get a book like this-
"A Roof Cutters Secrets to framing the custom house" http://www.contractor-city.com/rocusetof...
Not at all a good idea. An A-frame design works by carrying the weight of the top of one side of the roof down through the other side of the roof. If you remove one side to add on, the opposite side is at a grave danger of collapsing.
Having said that, there are ways to do this, but you really need a structural engineer to evaluate your current design to come up with a way to carry the weight of your roof down to the ground.
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