Joist Repair Sister Method Existing Floor - Building & Construction - DIY Chatroom Home Improvement Forum

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Old 07-27-2012, 09:23 AM   #1
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joist repair sister method existing floor

level of floor off by 2 inches 6 joist's need to bee sisterd in order to get back to level can new sister joist furthest from undamaged joist be offset the 2 inches higher then work back 1 3/4 , 1 1/4 , 3/4 and so on untile i am flush with the undamaged joist


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Old 07-27-2012, 09:41 AM   #2
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If the joists have cracked or sagged, new ones sistered beside will straighten them out.
What size are the existing joists, what span, and how far apart.
Maybe you need additional support under them?


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CopperClad (07-27-2012)
Old 07-27-2012, 09:42 AM   #3
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Hi, welcome to the forum. We will need a little more information in order to help you address your situation. How old is the home? How many floors is the home? What floor of the home are you having issues? What size are your existing joist? Is the floor sagging in the middle or? What is supporting both sides of the joist?
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