Tying rafters for an addition

Message 1 in thread From: Owen White Subject: Tying rafters for an addition Date: 2003-07-23 10:22:39 PST Folks, I am contemplating an addition which would involve adding a room whose roof trusses would tie into an existing set of rafters, as in: http://nilno.com/roof_example.jpg I apologize that I dont have most of the terms down, so I'll ask a question using wild gesticulating movements. My question is do most contractors yank off all the sheathing before tying the rafters between new and existing roofs? I figure the answer is yes; you have to remove the existing sheathing in order to tie-in a new set of rafters, but I wanted to check. I ask because if I were to make an addition tying two sets of rafters together and you have to remove the sheathing, that'd leave a long chunk of time where the existing crawl space would be open to the elements. Suggestions for how to reduce exposing the insulation and ceiling drywall to a good soaking during such a project are welcome. Thank you, Owen Message 2 in thread From: DP Subject: Re: Tying rafters for an addition Date: 2003-07-23 10:29:14 PST Don't remove the sheathing. After you are blacked in, cut out what is necessary for access and/or ventilation to the addition Message 3 in thread From: Bob Morrison Subject: Re: Tying rafters for an addition In article DP says... > Don't remove the sheathing. After you are blacked in, cut out what is > necessary for access and/or ventilation to the addition > Good answer. Leave the sheathing intact as much as possible. -- Bob Morrison R.L. Morrison Engineering Co. Structural and Civil Engineering Poulsbo WA Message 4 in thread From: Lyle B. Harwood Subject: Re: Tying rafters for an addition Date: 2003-07-23 13:15:36 PST In article <65a07e7c.0307230922.374c85a@posting.google.com>, Owen White wrote: € I apologize that I dont have most of the terms down, so I'll ask a € question using wild gesticulating movements. My question is do most € contractors yank off all the sheathing before tying the rafters € between new and existing roofs? I like wild gesticulating movements. It's what I resort to when I can't make myself understood any other way. The only exception is that it doesn't work very well at security checkpoints in airports. No, you don't need to remove the sheathing, only the shingles. Then you build what's called a "California Roof" to bridge between the last truss of the new addition and the plane of the existing roof. The book in this URL has a couple examples of such technique: http://www.taunton.com/store/pages/070634.asp A couple of the examples, though, are new construction, and, therefore, are shown with no sheathing. One is in the article "Framing Doghouse Dormers". The best example is the article "Simplified Valley Framing", which shows exactly your situation and the techniques you need to frame your roof. The author is from Los Angeles, and I suspect that's why he doesn't call it a "California Roof", but that's what the rest of us call it. Best of luck, and let us know how it comes out! -- Lyle B. Harwood, President Phoenix Homes, Inc. (206) 523-9500 www.phoenixhomesinc.com Message 5 in thread From: GARY Subject: Re: Tying rafters for an addition Date: 2003-07-23 21:14:39 PST So, the "California roof" basically means you build as much as possible of the addition, then remove the necessary shingles and sort of "box in " the section between the old and new. Correct? Gary Message 6 in thread From: Lyle B. Harwood Subject: Re: Tying rafters for an addition Date: 2003-07-23 22:44:42 PST In article <10241-3F1F58E4-180@storefull-2135.public.lawson.webtv.net>, GARY wrote: € So, the "California roof" basically means you build as much as possible € of the addition, then remove the necessary shingles and sort of "box in € " the section between the old and new. Correct? Yes. You snap lines for a straight valley, lay a plate along the line, and frame jack rafters to the plate. Simple, straight forward, and fast. Be careful to flash the new valley correctly. Best of luck, and let us know how it comes out! -- Lyle B. Harwood, President Phoenix Homes, Inc. (206) 523-9500 www.phoenixhomesinc.com Message 7 in thread From: Rico dJour Subject: Re: Tying rafters for an addition Date: 2003-07-24 06:28:55 PST >From: GARY35619@webtv.net (GARY) > >So, the "California roof" basically means you build as much as possible >of the addition, then remove the necessary shingles and sort of "box in >" the section between the old and new. Correct? http://www.hometime.com/Howto/projects/framing/frame_6.htm#tyingin R