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Discussion Forum

Gluing TREX railings

Lyptus | Posted in General Discussion on January 14, 2007 12:11pm

Hi All,

I am building a deck with TREX decking, posts, and railings.  I deviated from the recommended spacing between my posts (72″) by spacing two 78″ apart.  The railing only comes in 76″ sections so I am short two inches.  I’d rather not move my posts because I already picture framed the decking around the posts.  So, I would like to extend the railing 2″ by using biscuits and glue in the butt joint to attach a 2″ piece of railing to the 76″ piece.  I want the joint to be strong because it is that 2″ piece which will be screwed to the post.  Will wooden biscuits and wood glue (Tightbond III) work or should I use Gorilla glue or Epoxy?  Also- would 2 dowels be stronger than biscuits?  Any other suggestions are welcome.

Thanks,

Lyptus 

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Replies

  1. User avater
    Sphere | Jan 14, 2007 12:19am | #1

    PL Premium. Sounds like a bad idea tho' no matter what, I'd do something different, like add a mid post or switch to different rail stock...glueing on a fix-it just reeks of HACK.

    Spheramid Enterprises Architectural Woodworks

    The secret to a long life is knowing when its time to go.  M. Shocked

    1. User avater
      Matt | Jan 14, 2007 12:26am | #3

      I was typing while you were - great minds think alike :-)

      1. User avater
        Sphere | Jan 14, 2007 12:30am | #4

        Yup. That just ain't cool.

        Maybe, just maybe a decorative block on the side of the post, or something, but splice a 2" hunk on? BARF.

        Spheramid Enterprises Architectural Woodworks

        The secret to a long life is knowing when its time to go.  M. Shocked

        1. User avater
          Matt | Jan 14, 2007 02:06am | #5

          Yea!  That's the ticket.. make it into a "design feature".  :-)

           

           

          Actually, sounds like a re-do to me :-(

  2. User avater
    Matt | Jan 14, 2007 12:24am | #2

    It's been a while since I worked with Trex, but I thought the top and bottom rail pieces came in 12'.  I haven't had a lot of luck with gluing it.  I tried gorilla glue and it didn't work very well.  To tell you the truth, the thought of splicing a railing like you describe would not even cross my mind - generally, they just need to be 1 piece, regardless of what material they are - maybe if you were doing some kind of laminated curved design...

  3. IdahoDon | Jan 14, 2007 02:34am | #6

    Move the post.

     

    Beer was created so carpenters wouldn't rule the world.

    1. User avater
      Sphere | Jan 14, 2007 02:37am | #7

      Yeah something this funny belongs in the Tavern.  LOL

       

      Oh, THAT post..nevermind.

      Spheramid Enterprises Architectural Woodworks

      The secret to a long life is knowing when its time to go.  M. Shocked

  4. User avater
    McDesign | Jan 14, 2007 03:06am | #8

    I say do it.  Put screws end-wise as well.  I don't think it will ever show, and with the screws added will be fine for strength.

    Forrest - make it work

     

    1. calvin | Jan 14, 2007 03:11am | #9

      If you elect to try it, I might suggest a 1'' pc. each end.  Screw through from each end.  Ease the edge of both sides of the splice.  Carve a slot in the same spots on the other rails, make it look like a McDesign'd feature.A great place for Information, Comraderie, and a sucker punch.

      Remodeling Contractor just outside the Glass City.

      http://www.quittintime.com/

       

      1. User avater
        McDesign | Jan 14, 2007 03:23am | #10

        <and a sucker punch.>

        Ooof!

        Forrest

        1. calvin | Jan 14, 2007 04:05am | #11

          Forrest, no punch intended.  If he's gonna scab on a pc. , just thinking two is more balanced.  And you know hiding something, just doesn't happen easy.  Might as well accentuate.

          See, now you've got company.  Wouldn't think of leaving you hanging out to dry with the purists.A great place for Information, Comraderie, and a sucker punch.

          Remodeling Contractor just outside the Glass City.

          http://www.quittintime.com/

           

    2. User avater
      Matt | Jan 14, 2007 07:12am | #14

      Yea - that would work. 

       

      On second thought, I wouldn't do it if I were charging someone though.  Probably wouldn't do on my stuff either...

      Edited 1/13/2007 11:14 pm ET by Matt

  5. nailbanger | Jan 14, 2007 04:47am | #12

    There's a reason that they only make them that long (strength, amount of defection, etc). Now granted 2 more inches aint a whole lot but I wouldn't do it. I'd go with a mid post or build out the sides of the existing posts somehow.

    BILL

  6. arnemckinley | Jan 14, 2007 04:52am | #13

    can you add a plate in which to mount the railings on the inside of each post to shorten the distance?

  7. User avater
    BruceT999 | Jan 14, 2007 08:16am | #15

    Before you start thinking about tagging a little piece onto that Trex railing, consider that it's basically made of recycled HD shopping bags and sawdust - no adhesion and little strength. Now imagine the barbecue party where 300lb uncle Harry leans back against the railing. Then imagine having to find a good lawyer.

    Move the posts and replace those picture-framed deck boards or rip a deck board in half, ease the cut edges with your router and scab them on the sides of the posts to reduce the span.

    Or maybe you can move those two posts right and left (move the picture-framed deck boards with them) and insert another post between, resulting in three 50 3/4" spans.

    BruceT

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