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Old 09-26-2011, 03:54 PM   #1
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Cut through 50% of Floor Joist


While removing a sofit in my kitchen, I accidentally cut through the bottom half of the ceiling joist. What should I use to re-brace this?
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Old 09-26-2011, 04:05 PM   #2
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Cut through 50% of Floor Joist


The accepted practice around here would be to block along side of it, 24" to either side of the cut with the same size material. So you'd basically would nail and glue a 2x xx at least 4 ft long and center it on the cut. My preferred way, if the builder has the materials, is to sister the thing from one end to the other. Sometimes that won't work because of plumbing or electrical so we make the sister piece as long as possible and center it on the cut. Never had an issue with either fix.

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Old 09-26-2011, 06:04 PM   #3
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Cut through 50% of Floor Joist


How do you "accidentally" cut that far into it? Sister that with a full joist if at all possible.
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Old 09-26-2011, 06:37 PM   #4
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Cut through 50% of Floor Joist


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I accidentally cut through the bottom half of the ceiling joist.
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Old 09-27-2011, 10:59 AM   #5
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Cut through 50% of Floor Joist


Should the new block be nailed or screwed, is one better than the other?
Anything special to glue them together or simple PL Premium?

Thanks for the help!
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Old 09-27-2011, 04:42 PM   #6
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Cut through 50% of Floor Joist


Good thing it wasn't the next joist over, or you would have been able to find out whether your blade was suitable for BX!
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Old 09-27-2011, 05:24 PM   #7
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Cut through 50% of Floor Joist


pl premium or lumberlock will do fine, sistering the full length of the joist is the best thing to do but if you cant get it in do to pipes and electrical either call someone to reroute the lines or just do as others have stated and install the longest peice of lumber possible
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Old 09-28-2011, 07:36 PM   #8
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Cut through 50% of Floor Joist


You could either sister with another 2x8 or you could buy some steel brackets or plates and bolt them on by sandwiching joist. Make sure you apply constructive adhesive everywhere including inside the cut.
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Old 09-28-2011, 07:43 PM   #9
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Cut through 50% of Floor Joist


Quote:
Originally Posted by TrapperL
The accepted practice around here would be to block along side of it, 24" to either side of the cut with the same size material. So you'd basically would nail and glue a 2x xx at least 4 ft long and center it on the cut. My preferred way, if the builder has the materials, is to sister the thing from one end to the other. Sometimes that won't work because of plumbing or electrical so we make the sister piece as long as possible and center it on the cut. Never had an issue with either fix.
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