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Old 03-27-2014, 04:14 PM   #1
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Repairing ends of roof rafters


Frequently I've seen roofers repair the ends of rotted roof rafters by cutting them off at the wall of the house and nailing a new piece in. While I can't think of a different way to do things, it does seem that new piece will have little structural strength, wouldn't help much in holding up the edge of the roof. What do you guys think.

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Old 03-27-2014, 04:28 PM   #2
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Repairing ends of roof rafters


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Frequently I've seen roofers repair the ends of rotted roof rafters by cutting them off at the wall of the house and nailing a new piece in. While I can't think of a different way to do things, it does seem that new piece will have little structural strength, wouldn't help much in holding up the edge of the roof. What do you guys think.
You need 2/3 of the sister attached to the rafter. I other words if you have a 2' overhang the new sister tail would need to be 6' in length with 4' of it attached to the existing rafter for it to be structurally sound.

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Old 03-27-2014, 04:42 PM   #3
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Repairing ends of roof rafters


Depends on how long the over hang is what you can get away with.
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Old 03-27-2014, 04:50 PM   #4
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Repairing ends of roof rafters


Very little weight is being carried at the roof edge.

As a general rule though, you will see them extend the repair approximately two times the length of the replaced section inward.
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Old 03-27-2014, 08:40 PM   #5
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Repairing ends of roof rafters


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Originally Posted by darsunt View Post
Frequently I've seen roofers repair the ends of rotted roof rafters by cutting them off at the wall of the house and nailing a new piece in. While I can't think of a different way to do things, it does seem that new piece will have little structural strength, wouldn't help much in holding up the edge of the roof. What do you guys think.
What do I think? Jacklegs are doing the work.
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