Identification And Cutting Of Roof Truss System For Skylights? - Carpentry - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Carpentry

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 08-30-2010, 01:25 PM   #1
Still going...
 
ChrisDIY's Avatar
 
Join Date: Feb 2010
Location: Indianapolis Area
Posts: 985
Rewards Points: 500
Blog Entries: 19
Default

Identification and cutting of roof truss system for skylights?


Hello!

I believe the north half of my house was framed with engineered truss system. Can they be cut to allow install of a skylight? How about multiple skylights? I found this space above the shower when I did my demo. I would like to put a skylight above the shower to reduce the volume of space to within code. The plan would be to do the same thing in the adjacent bathroom so the spaces are no longer connected. The bathroom fan will need to be moved but this is the least of my worries.

Is it a realistic plan to cut joists, after knowing EXACTLY how its is to be done, frame it, up to the roof, decking then have skylight installer finish install? Then do my own drywall and finish? Is this beyond a non carpenter DIY guy?
Attached Thumbnails
Identification and cutting of roof truss system for skylights?-skylight.jpg   Identification and cutting of roof truss system for skylights?-img_2319.jpg   Identification and cutting of roof truss system for skylights?-img_2321.jpg  

Advertisement

__________________
--Chris the DIY Guy

Master Bath, still going...

Last edited by ChrisDIY; 08-30-2010 at 01:29 PM.
ChrisDIY is offline   Reply With Quote
Old 08-30-2010, 01:37 PM   #2
Still going...
 
ChrisDIY's Avatar
 
Join Date: Feb 2010
Location: Indianapolis Area
Posts: 985
Rewards Points: 500
Blog Entries: 19
Default

Identification and cutting of roof truss system for skylights?


Something like this which will require cutting that center joist.
Attached Thumbnails
Identification and cutting of roof truss system for skylights?-img_2321-sky.jpg  

Advertisement

__________________
--Chris the DIY Guy

Master Bath, still going...

Last edited by ChrisDIY; 08-30-2010 at 01:42 PM.
ChrisDIY is offline   Reply With Quote
Old 08-30-2010, 06:57 PM   #3
Registered User
 
Join Date: Mar 2009
Posts: 10,016
Rewards Points: 2,098
Default

Identification and cutting of roof truss system for skylights?


Yes, those are trusses. NO, can not cut them.

Gary
__________________
If any ads are present in my answer above, I do not condone/support/use the product or services listed, they are there against my permission.
Gary in WA is offline   Reply With Quote
Old 08-30-2010, 07:04 PM   #4
Member
 
Join Date: Mar 2007
Location: Long Island, NY
Posts: 9,519
Rewards Points: 2,000
Default

Identification and cutting of roof truss system for skylights?


I don't see any trusses, just engineered joists.
Ron
Ron6519 is offline   Reply With Quote
Old 08-30-2010, 07:37 PM   #5
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Rewards Points: 2,000
Default

Identification and cutting of roof truss system for skylights?


Post a better pic of whats up in the attic for a rafter system
Could be engineered I-joists ?
Scuba_Dave is offline   Reply With Quote
Old 08-30-2010, 07:50 PM   #6
Registered User
 
Join Date: Mar 2009
Posts: 10,016
Rewards Points: 2,098
Default

Identification and cutting of roof truss system for skylights?


The first picture sure looks like a fink truss with the lower end web behind the white plumbing vent under the blown-in insulation....... Turn your head clockwise 20*, you're looking up through the ceiling. The osb rakes down to the left outside wall.

Gary
__________________
If any ads are present in my answer above, I do not condone/support/use the product or services listed, they are there against my permission.
Gary in WA is offline   Reply With Quote
Old 08-30-2010, 10:02 PM   #7
Still going...
 
ChrisDIY's Avatar
 
Join Date: Feb 2010
Location: Indianapolis Area
Posts: 985
Rewards Points: 500
Blog Entries: 19
Default

Identification and cutting of roof truss system for skylights?


Quote:
Originally Posted by Scuba_Dave View Post
Post a better pic of whats up in the attic for a rafter system
Could be engineered I-joists ?
This space is much larger than 30 sq. ft. length is somewhere between 18-23 ft. by 6-8 ft. So 108-184 sq. ft. In order to remedy a problem was hoping could break up with skylights... If the space between trusses is greater than 16 o.c. which it looks like, have to get ladder in and actually measure. Can I or someone frame onto side of truss to make the channel? Can get as narrow as 14" x 45 skylight???
Attached Thumbnails
Identification and cutting of roof truss system for skylights?-img_2821.jpg  
__________________
--Chris the DIY Guy

Master Bath, still going...

Last edited by ChrisDIY; 08-30-2010 at 10:34 PM.
ChrisDIY is offline   Reply With Quote
Old 08-30-2010, 10:19 PM   #8
Registered User
 
Join Date: Mar 2009
Posts: 10,016
Rewards Points: 2,098
Default

Identification and cutting of roof truss system for skylights?


If the trusses are 2' on center, (as they appear), install a skylight between two, as is the norm. It doesn't have to be centered in the room, just install the fan next to it.

"I would like to put a skylight above the shower to reduce the volume of space to within code." ---- Could you explain this more, please?

Gary
__________________
If any ads are present in my answer above, I do not condone/support/use the product or services listed, they are there against my permission.
Gary in WA is offline   Reply With Quote
Old 08-30-2010, 10:30 PM   #9
Member
 
Tom Struble's Avatar
 
Join Date: Dec 2008
Location: west milford n.j.
Posts: 2,785
Rewards Points: 2,000
Default

Identification and cutting of roof truss system for skylights?


skylites in the bathroom look so pretty in the pictures,but with the anount of possible condensation they can sometime be a real problem
Tom Struble is offline   Reply With Quote
Old 09-02-2010, 12:27 AM   #10
Still going...
 
ChrisDIY's Avatar
 
Join Date: Feb 2010
Location: Indianapolis Area
Posts: 985
Rewards Points: 500
Blog Entries: 19
Default

Identification and cutting of roof truss system for skylights?


Quote:
Originally Posted by GBR in WA View Post
If the trusses are 2' on center, (as they appear), install a skylight between two, as is the norm. It doesn't have to be centered in the room, just install the fan next to it.

"I would like to put a skylight above the shower to reduce the volume of space to within code." ---- Could you explain this more, please?

Gary
Unless I am misreading (don't have printed source, only online) any attic space larger than 30 sq. ft. needs access.
__________________
--Chris the DIY Guy

Master Bath, still going...
ChrisDIY is offline   Reply With Quote
Old 09-02-2010, 12:34 AM   #11
Still going...
 
ChrisDIY's Avatar
 
Join Date: Feb 2010
Location: Indianapolis Area
Posts: 985
Rewards Points: 500
Blog Entries: 19
Default

Identification and cutting of roof truss system for skylights?


This is my framing plan since I need to provide support for drywall etc. I will need to do this 4 times along the space. Once over this bathroom and twice over center of adjacent bathroom and maybe the fourth over the new master shower, but very reluctant since this shower will get heavy use.

Identification and cutting of roof truss system for skylights?-framing.jpg

tomstruble can you go more in detail about condensation issues? On skylight or walls?

Planning on using this shower door.

Name:  aaa72922.jpg
Views: 1407
Size:  11.1 KB
__________________
--Chris the DIY Guy

Master Bath, still going...

Last edited by ChrisDIY; 09-02-2010 at 12:44 AM.
ChrisDIY is offline   Reply With Quote
Old 09-02-2010, 08:59 AM   #12
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Rewards Points: 2,000
Default

Identification and cutting of roof truss system for skylights?


Hot steam/water vapor rises & will condense on the cooler surfaces
That will usually be the skylight
I take fairly long, hot showers at times & the water vapor condenses on every wall in my bathroom & the ceiling...no skylight

So even without a skylight you can have the condensation issue
A good fan will help get rid of the mositure
My bath fan is around 110 cfm, bathroom is round 330 cf
I have skylight in my 2nd floor bath
But we do not use the shower that much
I like the light in the bathroom
Scuba_Dave is offline   Reply With Quote
Old 09-02-2010, 09:55 AM   #13
Member
 
Join Date: Apr 2010
Location: NY, NY
Posts: 167
Rewards Points: 150
Default

Identification and cutting of roof truss system for skylights?


How about installing a velux suntunel? One, the deflector is far away from the bubble on the roof, so the deflector will stay at room temp., no condensation Two, you do not need to worry about the rafters. The tunnels are 14" wide at most. I can tell you from first hand experience that these give off so much light, that during the day, there is no point to turn on the lights in the bathroom.

Other option, leave the rafters, get a 48" skylight, decorate the rafters, and run sheetrock down and around them. I have done this too. 3 times in the last 2 years actually. Let me know if you want some pics.
slickgt1 is offline   Reply With Quote
Old 09-02-2010, 10:56 AM   #14
Still going...
 
ChrisDIY's Avatar
 
Join Date: Feb 2010
Location: Indianapolis Area
Posts: 985
Rewards Points: 500
Blog Entries: 19
Default

Identification and cutting of roof truss system for skylights?


Quote:
Originally Posted by slickgt1 View Post
How about installing a velux suntunel? One, the deflector is far away from the bubble on the roof, so the deflector will stay at room temp., no condensation Two, you do not need to worry about the rafters. The tunnels are 14" wide at most. I can tell you from first hand experience that these give off so much light, that during the day, there is no point to turn on the lights in the bathroom.

Other option, leave the rafters, get a 48" skylight, decorate the rafters, and run sheetrock down and around them. I have done this too. 3 times in the last 2 years actually. Let me know if you want some pics.
Can you attach sheetrock directly to trusses?
__________________
--Chris the DIY Guy

Master Bath, still going...
ChrisDIY is offline   Reply With Quote
Old 09-08-2010, 11:02 AM   #15
Member
 
Join Date: Apr 2010
Location: NY, NY
Posts: 167
Rewards Points: 150
Default

Identification and cutting of roof truss system for skylights?


Quote:
Originally Posted by dawktah View Post
Can you attach sheetrock directly to trusses?
Yea why not. I've done it, and seen it done countless times.

Advertisement

slickgt1 is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Top of Page | View New Posts