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How to install trim on curved walls?

rpitre | Posted in Construction Techniques on February 23, 2005 04:13am

I was wondering if anyone had any trade secrets on how to install a piece of chair rail on a curved stairwell? My customer already has chair rail in her entrance and wants to continue it down her stairs into the basement. The chair rail is 2-1/2 by 1-1/4 thick. Any help would be greatly appriciated.

 Thanks, Rob

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Replies

  1. User avater
    CloudHidden | Feb 23, 2005 05:02am | #1

    Might be easier to order a section of polyurethane or polyester trim, both of which are bendable.

    http://www.ultraflexmoulding.com/
    http://www.flexiblemoulding.com/

  2. Shep | Feb 23, 2005 05:15am | #2

    Unless you want to get into major overkill, and rip and laminate the chair rail so it conforms to the wall , a major PITA, in my opinion, just go with the flex like Cloud says.

  3. UncleDunc | Feb 23, 2005 05:59am | #3

    What's the radius of the curve?

    1. zendo | Feb 23, 2005 06:18am | #4

      I agree with the others. 

      If its painted, and not too tight, pine will bend like a mutha, if you can hit the studs. 

      If its flat on top you could veneer, or fill. 

      You cant kerf it if its shaped, without showing, and the fill job would be more work then the value of the flex.

      Idea-  you could cut off the small part on top of the molding, (bandsaw would be great) kerf the thick part, then tack the strip back on, covering the kerf. (like curving 2-3 part base or skirt)

      -zen

  4. firedude | Feb 23, 2005 06:27am | #5

    think about steaming it? piece of 3" dia pvc as a steam tube attached to something create the steam, let it steam and you should be able to get some flex

    1. User avater
      hubcap | Feb 23, 2005 07:11am | #6

      you can kerf the back down to 1/8 inch or so -set up your saw like you want to run dado's- easy enuff to do with a mitre box or a slider

      then steam it and fasten and forget

      rip some scrap stock into a ribbon to bend around the curve to get a length and mark ,

      or use ribbon come to think of it,

      transfer it to the finish piece and bingo

      you is done

      you can also rip the profiled parts and steam

      kerf the flats

       and put them all back together on the wall

      steam box pic and curved base

      1. Pierre1 | Feb 23, 2005 09:12am | #9

        This pic http://forums.taunton.com/n/mb/at.asp?webtag=tp-breaktime&guid=DC0D9498-AC3F-4847-985E-617D5B68D1FD&frames=no

        would make a great cover for FHB. Your work?

        1. User avater
          hubcap | Feb 23, 2005 03:31pm | #10

          yep.

  5. User avater
    basswood | Feb 23, 2005 08:18am | #7

    I use a combination of the steaming and kerfing techniques already described here. For steaming I hook an old wallpaper steamer up to 3" PVC with a few perforations in the cap at the far end to allow the steam to move through the pipe.

    Edited 2/23/2005 12:20 am ET by basswood photo way too small



    Edited 2/23/2005 12:30 am ET by basswood

    1. User avater
      basswood | Feb 23, 2005 08:29am | #8

      larger photo of Curves in Oak

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