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  1. MIB4X4

    SISTERING JOISTs or LVLs

    ztengguy - Thanks for the reply. There are two windows installed in the gables of his attic so that is how he will get them up there. Do 3-2x8s sistered offer the same strength as 3.5x7.25 LSL?
  2. MIB4X4

    SISTERING JOISTs or LVLs

    I am helping a friend who is wanting to add a room in his attic. The current joists are 2x8x16 - 16" OC. He is wanting to add a set of stairs from the second floor to the attic. The stairs are to code but i told him that his fastening points look questionable. The room underneath is a...

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