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I feel the same way as LJ does, but

Posted by Moderator, Steve on December 22nd, 2002 05:24 PM
In reply to Thanks. Any idea how much better...? by Kevin on December 22nd, 2002 04:54 PM [Go to top of thread]

I have never read or seen any studies or tables that have been gleaned from sistering to show just how effective the process is.

I also feel that the amount of screws and the screw pattern has allot to do with the effectiveness of sistering and the support added. I also feel that sistering on both sides addes even more strength than on one side.

Sistering is only a patch to strengthen a long joist that has been compromised. Your comment about sistering a 2x10 to a 2x6 and having the floor above be fastened to this sistered higher board is NOT a good idea at all. In my thinking a sistered board is to support that joists but not to be the main joists or joists for a new floor being higher that the original joists.

This will not support it and will probably fail in time.

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