Hello All
I remember (10+ years ago) a “TIP” or mention in an article re: levelling sheetrock ceilings, a technique, but I am unable to find this through the archive search. For butt ends, a piece of 1/2″ ply, 4′ long and of (?)width is installed above butt joints. Two 4’X 1″ strips of 1/8″ material (door skin) is glued to each edge of the ply facing down. When the butt ends are screwed to the ply from below, the 1/8″ strips cause the sheetrock to deflect up a bit creating a tapeable joint. I need to know (if any of you remember or know how to find it) the width of the 1/2″ plywood (somewhere in the 10″ – 15″ zone). thanks
Daniel
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http://www.butthanger.com has what you are looking for. but if you want to make your own, the width of the plywood strips is arbitrary. You decide. I have used them about 4-6" in width in the past.
Thanks guys. Looks like 10" is the right number. Don't want it too wide, or as I remember, it can mean a lot of extra compund.
Another way to try that I like to use....
Cut 1/2" OSB or plywood 4" wide and 14" long (many of them), screw 3 in place above the butt end (assuming 16" OC), butt up the next piece, screw it to the OSB, then make a shallow cut 1.5" back on each butted piece and tear off the paper...bed your tape, mud and away you go.
Some don't like this, because it requires removing some of the end paper, but I've never had a problem and ceilings I did 10 years ago still look great.
BruceM
Add a little water to the face of the butt ends either before or after its hung. This will allow the rock to deflect with little stress and your backing won't have to be so perfect for non envelope ceilings and walls. In all envelope situations, be aware of how your backing and screws could puncture the vapor barrier. If you remember to place the butt ends in a void but forget to add the backing, spray the ends, place a 2x4 lengthwise along the joint and add kickers to create the pressure to deflect the ends. You can also do a tailight job and spray the ceiling!
I've seen the tip, and it sounds like you have it down. If you go 8", less the 2 one inch strips, you have three inches for each board end to deflect. Sounds like that would leave you with just enough depression to bed the tape level.
Edited 7/15/2002 8:19:00 PM ET by Qtrmeg