DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Framing and Foundation > broken roof truss?




Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 11-09-2012, 10:03 PM  
kskatz
Junior Member
 
Join Date: Nov 2012
Posts: 7
Default broken roof truss?

Hello, I just bought a house and the porch roof overhang is sagging. there's no post on this corner supporting it. (wasn't designed to be)
Is this a problem caused by damaged or rotten roof truss? If so,.. what's the repair method?
Thanks,



front.jpg   2113-mistletoe-ln.jpg  
__________________
kskatz is offline  
 
Reply With Quote Quick reply to this message
Old 11-10-2012, 08:44 AM  
notmrjohn
Obnoxious Knowitalll
 
notmrjohn's Avatar
 
Join Date: Sep 2012
Posts: 251
Liked 24 Times on 23 Posts
Likes Given: 12

Default

The problem is the design. That end of the roof, at least, does not have trusses.
The sag is caused by there being such a long unsupported overhang of rafters beyond the beam.
There does not appear to be any damage to rafters, roof isn't bulging to show a break. Is there a ceiling in open area? The only way to really check rafters would be to remove it so you could see what's up there.

You could run a hefty beam from back wall, fastene to post and on out to roof corner. Easier would be to put a post at the corner, and possibly a beam across to stone wall.

But the sag is made more noticeable by that bizarre gutter and downspout arrangement. What's with that U bend? And the slope of gutter is opposite sag of roof, emphasizing it. Is there some reason it drains at the house side?

I'd reverse the slope of the gutter anyway. Instead of drain pipe use a steel pipe that would also be the supporting post. Or run drain pipe inside box column.

A neghbor of mine has similar but worse eave problem of similar width and overhang, but with truss roof. every five to ten years or so, they rip off fascia and soffit, sister in new rafters and joists. Sag reappears. That roof must be solid rafters by now. For some reason they refuse to put up a post.



__________________

[CENTER][FONT=Comic Sans MS]Measure twice, cut once.[/FONT][/CENTER]
[CENTER][FONT=Comic Sans MS]Look at the nail, not the hammer. Watch the fence, not the blade.[/FONT][/CENTER]
[CENTER][FONT=Comic Sans MS]If you hook your thumb over your belt you won't hit it with the hammer or leave it layin on the saw table.[/FONT][/CENTER]

notmrjohn is offline  
 
Reply With Quote Quick reply to this message
Old 11-11-2012, 08:39 PM  
nealtw
Contractor
 
Join Date: Nov 2010
Location: vancouver, b.c.
Posts: 9,337
Liked 732 Times on 653 Posts
Likes Given: 1281

Default

The beam between the house and the post should be level, Have you checked it?

__________________
nealtw is offline  
 
Reply With Quote Quick reply to this message
Old 11-12-2012, 10:14 AM  
nealtw
Contractor
 
Join Date: Nov 2010
Location: vancouver, b.c.
Posts: 9,337
Liked 732 Times on 653 Posts
Likes Given: 1281

Default

I suspect that the footing under that post was not big enough or was not on undisturbed soil and has settled. If that is the case, the beam could be lifted back into place. If then it continued to settle the footing would have to be dug up and re-done properly.

__________________
nealtw is offline  
 
Reply With Quote Quick reply to this message
Old 11-13-2012, 09:50 AM  
CallMeVilla
Contractor
 
CallMeVilla's Avatar
 
Join Date: Feb 2010
Location: San Diego
Posts: 1,211
Liked 349 Times on 276 Posts
Likes Given: 138

Default

A fixable mess ... I would remove the fascia and jack the entire front up to the proper angle, ensuring the front is level. Remove the existing post and pour a new, deeper footing (accounting for freeze-thaw). I would add a footing in the bedding in front of the rock wall for a new post. Next, I would add a horizontal beam spanning the rafters left to right, supported by new posts. Attaching the rafters to the new beam and replacing the fascia will finish the fix ... maybe for a very long time.

Oh, and fix that silly downspout too!

roof-3.jpg  
__________________
CallMeVilla is offline  
 
Reply With Quote Quick reply to this message
Old 11-13-2012, 01:05 PM  
JoeD
Contractor
 
Join Date: Mar 2006
Location: Welland, Ontario
Posts: 930
Liked 91 Times on 76 Posts

Default

What's deal with the big C bend in the gutter downspout? Why not straight down and why not at the end away from the house?

__________________
JoeD is offline  
 
Reply With Quote Quick reply to this message
Old 11-13-2012, 03:04 PM  
mudmixer
Contractor
 
mudmixer's Avatar
 
Join Date: Sep 2006
Posts: 587
Liked 42 Times on 35 Posts
Likes Given: 36

Default

kskatz -

If would help if you gave your location to determine the problems the home could have encountered due to the weather and frost, etc.

Are those really trusses extending over the entry area or are they just joists with little continuity back into the home itself? - The adjacent section of the house behind the does not seem to be trussed because of a vaulted ceiling.

The strange drainage pipe on the right of the entry certainly could be responsible for the accumulation of junk in the gutter and the sagging since there was no way for it to drain decently.

It does appear the the outer (left end) of the roof is slightly lower than the rest, but the sagging gutters throws every thing off. that is certainly a large area to collect water and leaves and choke down through a single downspout even if it is straight.

If there is no breaking of the roof members, it may be possible to replace the posts and/or footings and make everything level and drain well.

Dick

__________________
mudmixer is offline  
 
Reply With Quote Quick reply to this message
Old 11-13-2012, 11:02 PM  
BridgeMan
Senior Member
 
BridgeMan's Avatar
 
Join Date: Aug 2011
Location: Cottage Grove, Oregon
Posts: 737
Liked 73 Times on 65 Posts

Default

That overhang looks way too low, such that only very short people are able to walk under it without ducking down. Have you considered just cutting it back 3 or 4 feet, making it shorter and higher?

__________________
BridgeMan is offline  
 
Reply With Quote Quick reply to this message
Old 11-13-2012, 11:16 PM  
nealtw
Contractor
 
Join Date: Nov 2010
Location: vancouver, b.c.
Posts: 9,337
Liked 732 Times on 653 Posts
Likes Given: 1281

Default

I'm still waiting for the OP to put a level under that beem, the post has to be 3" down.

__________________
nealtw is offline  
 
Reply With Quote Quick reply to this message
Old 11-13-2012, 11:34 PM  
BridgeMan
Senior Member
 
BridgeMan's Avatar
 
Join Date: Aug 2011
Location: Cottage Grove, Oregon
Posts: 737
Liked 73 Times on 65 Posts

Default

We call them "beams" on this side of the border, nealtw.



__________________
BridgeMan is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 On
Refbacks are On


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Floor Truss Goof ChrisM Framing and Foundation 21 08-06-2012 08:25 PM
Floor Truss Problems chriswv Flooring 2 08-12-2011 02:52 AM
Too tall to tip (need to remove a truss) man Framing and Foundation 3 01-05-2011 04:45 PM
Floor truss too long!!!! dbailey Framing and Foundation 4 05-22-2010 10:04 PM
Additional weight on Truss reprosser Framing and Foundation 5 05-07-2010 05:16 AM