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    lucia23's Avatar
    lucia23 Posts: 2, Reputation: 1
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    #1

    Dec 19, 2010, 07:06 PM
    Is there a specific bracket for sistering 2x4's together, or is it sufficient to scre
    Dedicated bracket
    Is there a specific bracket for sistering together 2x4's, or is screwing them together sufficient?
    creahands's Avatar
    creahands Posts: 2,854, Reputation: 195
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    #2

    Dec 19, 2010, 07:30 PM

    What will double 2x4 be used for?

    For sistering lumber used construction adhesive and screws. Start about 3'' from end and screw every 16'' to 24''. Use 2 1/2'' screws and drill pilot hole size of shaft of screw. Both sides for max strength.

    Chuck
    lucia23's Avatar
    lucia23 Posts: 2, Reputation: 1
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    #3

    Dec 19, 2010, 07:46 PM
    Thank you Chuck! The sistering is mainly to provide a wider surface for several sandwiches of lattice/hardware cloth/window screen which rest atop the 2x4's. They are the rafters of a pergola, and in eleven places the single 2x4 edge is not wide enough to catch the edge of the sandwich.
    Lucy
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