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Old 09-08-2010, 10:03 AM   #16
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Identification and cutting of roof truss system for skylights?


ill get you a pic to explain

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Old 09-08-2010, 10:10 AM   #17
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Identification and cutting of roof truss system for skylights?




You can see what I did. Sheetrock is not really attached to the trusses, its attached to the framing around them, but you can see them through that opening. I didn't cut any of them out. I polyurethane-d the hell out of the trusses, and they look like furniture.

Sorry for the crappy pic, but its the best I have on hand.
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Old 09-08-2010, 10:27 AM   #18
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Identification and cutting of roof truss system for skylights?


I second the light-tube suggestion.
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Old 09-08-2010, 11:39 AM   #19
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Identification and cutting of roof truss system for skylights?


Are the skylights to reduce the attic space below 30sq.ft. to eliminate the required access? Would the solar tubes be too small to reduce the square footage enough?

Yes, you can drywall directly to the trusses, just don't attach to the wall drywall for cracking there: http://www.buildingscience.com/docum...d-but-strange/

I've installed an additional smaller bath fan in the skylight chase near the top to remove air before it condenses there.

Skylights will get warm at the top area, enough to melt snow and cause an ice dam, I&W shield is your friend: http://www.homeenergy.org/consumerinfo/roofs.php http://docs.google.com/viewer?a=v&q=...MubvjsQrLkvXfw Use some foam board under the drywall to keep the heat in the chase and not warm the roof framing. Insulate the chase well: Page 31: http://www.nybtg.com/downloads/therm..._checklist.pdf

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Old 09-08-2010, 10:25 PM   #20
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Identification and cutting of roof truss system for skylights?


Quote:
Originally Posted by GBR in WA View Post
Are the skylights to reduce the attic space below 30sq.ft. to eliminate the required access? Would the solar tubes be too small to reduce the square footage enough?

Yes, you can drywall directly to the trusses, just don't attach to the wall drywall for cracking there: http://www.buildingscience.com/docum...d-but-strange/

I've installed an additional smaller bath fan in the skylight chase near the top to remove air before it condenses there.

Skylights will get warm at the top area, enough to melt snow and cause an ice dam, I&W shield is your friend: http://www.homeenergy.org/consumerinfo/roofs.php http://docs.google.com/viewer?a=v&q=...MubvjsQrLkvXfw Use some foam board under the drywall to keep the heat in the chase and not warm the roof framing. Insulate the chase well: Page 31: http://www.nybtg.com/downloads/therm..._checklist.pdf

Gary
Awesome!
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Old 09-09-2010, 08:18 PM   #21
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Identification and cutting of roof truss system for skylights?


Well after looking at things I have yet another hurdle. The soil stack is right there and if any of the skylights are to open I need 10' clearance? So if they are fixed and do not open is it still a done deal?
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Old 09-09-2010, 09:01 PM   #22
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Identification and cutting of roof truss system for skylights?


Vent Termination
Roof--min. 6in. above {and 12in. to vert. surface} . . . . [3103.1] {906.1}
Clearance to building openings-2ft. {3ft.} above OR
10ft. horiz. [or 4ft. below] . . . . . . . . . . . . . . . . . .T-m2 [3103.5] {906.2}
Sidewall vent--min. 10ft. from PL and 10ft. above grade [3103.6] {}
From: http://www.codecheck.com/cc/pg13_14plumbing.html

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Old 09-09-2010, 09:21 PM   #23
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Identification and cutting of roof truss system for skylights?


Quote:
Originally Posted by GBR in WA View Post
Vent Termination
Roof--min. 6in. above {and 12in. to vert. surface} . . . . [3103.1] {906.1}
Clearance to building openings-2ft. {3ft.} above OR
10ft. horiz. [or 4ft. below] . . . . . . . . . . . . . . . . . .T-m2 [3103.5] {906.2}
Sidewall vent--min. 10ft. from PL and 10ft. above grade [3103.6] {}
From: http://www.codecheck.com/cc/pg13_14plumbing.html

Gary
Thanks!

Now I'm worried that the angled run in that vent pipe is even code. All pics of soil stack I can find are straight vertical.
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Old 09-10-2010, 06:35 PM   #24
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Identification and cutting of roof truss system for skylights?


Try a new post question on the "plumbing" section. I believe it depends on which Code you are under locally.

http://www.co.lincoln.wa.us/Assessor...ndout-4-09.pdf

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Old 09-19-2010, 08:05 PM   #25
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Identification and cutting of roof truss system for skylights?


You CAN apply DW directly to trusses, but I prefer to strap the trusses first. You can also cut trusses but there is a special way to do it and you'd need an engineer to approve it.
As suggested, why not use a Sun Tunnel. You can get them with built in lights for night time use. A skylight in a bathroom is asking for condensation trouble.
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Old 09-20-2010, 08:46 AM   #26
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Identification and cutting of roof truss system for skylights?


Quote:
Originally Posted by mrgins View Post
You CAN apply DW directly to trusses, but I prefer to strap the trusses first. You can also cut trusses but there is a special way to do it and you'd need an engineer to approve it.
As suggested, why not use a Sun Tunnel. You can get them with built in lights for night time use. A skylight in a bathroom is asking for condensation trouble.
My primary use is not for light but as a partition to separate the attic space above.
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Old 09-20-2010, 08:57 AM   #27
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Identification and cutting of roof truss system for skylights?


Quote:
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My primary use is not for light but as a partition to separate the attic space above.
Correct, put the Sun Tunnel, and box off the tunnel in the attic. That will give you separation.
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Old 09-20-2010, 10:46 AM   #28
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Identification and cutting of roof truss system for skylights?


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Correct, put the Sun Tunnel, and box off the tunnel in the attic. That will give you separation.
If I do Sun Tunnel will I need to move the stack vent?
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Old 09-20-2010, 12:13 PM   #29
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Identification and cutting of roof truss system for skylights?


Quote:
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If I do Sun Tunnel will I need to move the stack vent?
Well the sun tunnel has a flex duct, so you can move it far enough to be within code with the vent.
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Old 09-21-2010, 02:52 PM   #30
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Identification and cutting of roof truss system for skylights?


I agree with the sun tunnels but they look more like recessed lights than a skylight. I plan to install two of them for my dark hallway. No reason to flip on a switch for 20ft.


http://www.homedepot.com/h_d1/N-5yc1...atalogId=10053

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