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gwitz 05-07-2014 04:58 AM

Purlin Braced to Joists
I am contemplating the purchase of a home and need some advice on roof repairs. It is a small home measuring 24'x40' that was built in 1953. A new composite roof was installed in the past 6 months(old shingles were removed).

The roof sags in one area due to the purlin being braced to joists. I assume the resulting sway in the 2x6 rafters is there to stay. There is not a load bearing wall to properly brace to in this area.
Should I:
- Install a strongback to re-brace the purlin. If I go this route should I attempt to remove the sway?

- Just live with it as is, 60 years old whats done is done

- Some other idea from someone who has more experience than me

inspectorD 05-07-2014 05:12 AM

Well, as always, you should probably consult with an engineer for the correct answer.:D
However, with some pictures and some more answers, we can probably get you to a quick temporary fix, or even a pretty good guess as to what you can expect from an engineer.
So how about those pictures?.. because anything can be fixed with some $$...

gwitz 05-07-2014 05:36 AM

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Thanks for the reply. As of now the only picture I have is the portion of above the garage where there is no bracing(at least not yet). The build on the home portion in question is the same with the addition of purlin and braces running down to the joists.

nealtw 05-07-2014 07:38 AM

Most times it would require pulling one or two walls back in place, can be nasty. A photo from outside showing the sag would be good too.

gwitz 05-07-2014 08:06 AM

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Thanks. Here are a couple photos from photos from outside the home. Of course in the pictures I have you can get a real good look at the sag. I will try to get some better shots this afternoon.

Jungle 05-07-2014 12:22 PM

Cut a hole through the ceiling and get a jack post on the sagging beam, slowly push it back it place. Sister another beam on there, secure the beam with more trusses.

oldognewtrick 05-07-2014 02:44 PM


Originally Posted by Jungle (Post 104504)
Cut a hole through the ceiling and get a jack post on the sagging beam, slowly push it back it place. Sister another beam on there, secure the beam with more trusses.

I would absolutely not recommend jacking up any rafters till you know where the load points are. For every action, there is an equal and opposite reaction, don't forget.

As inspector stated, an engineer will be able to provide a road map of how to proceed. Money well spent in the long run. Just my :2cents:

bud16415 05-07-2014 05:06 PM

I would have a pro look at it for peace of mind. Most people would live with it if its not changing. You should see clues if its changing. You could then stabilize it from moving more. If the plan becomes making it straight plan on some expense. DO NOT jack it up as a quick fix. Something like that take a lot of planning.

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nealtw 05-07-2014 06:24 PM

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I would go for a little style and a front porch over to the garage.

gwitz 05-07-2014 09:06 PM

Thanks for all the comments. Leaning towards bud16415 and nealtw advice. I can live with it how it is as long as I can keep it that way. I would much rather spend dollars and energy finishing out the garage and adding a larger porch. Just not one quite that big.

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