WebTo even out the wall, we'll need to shim the backer board up to a 1/2" in places, including along the horizontal cut line along the countertop. I understand we should tape cement board joints with alkali-resistant … WebAug 8, 2008 · As long as the backer board does not flex on it's width, any type of backer can be used. 7/16" OSB with a width of 3 to 6" does not flex on it's width.-----Because the backer board with the ButtTaper or the "V Groove" is secured well, both methods work in the short term but the ButtTaper also works in the long term.

When taping cement board do I need to tape at the walls?

WebNov 17, 2002 · Re: Drywall butt joins The backer Myron refers to sucks the joint back from the face of the board allowing the mud to fill in a concavity, rather than have to feather it out 3 feet or more. It saves time, and gives a nice high end finish in that type of work, but if you are more into production, it is probably not appropriate. Dennis WebAug 10, 2011 · Joined May 4, 2011. 511 Posts. #4 · Aug 9, 2011. New and improved ButtBoard. For the last 7 years our drywall splicer has been made from MDF and since last year all MDF only comes from china we had to do something. Our Trim-Tex Team was up to the challenge and now our new and improved Splicer is made from USA made OSB … square box keyboard symbol

Backers for drywall butt joints - DoItYourself.com

WebMar 16, 2013 · Mate, Here they back block the butts, Place a piece of wallboard onto the back of the butt, mud it, Then screw 2 battens to the face of the board accross the butt and pack up the edge of the two butts to make a raised spot, Like a buttboard would. All as i think you do too. WebMay 27, 2010 · I applied the mud on my butt joints and they are nice and smooth. But as always, there is a hump, the joints are about 8" wide now. I tried to hide it by putting compound on either side of the joint but when I drew my 8" knife, one end of the knife was at the peak of the hump and the other end was on the drywall, I could see a gap, I … WebJan 10, 2005 · Tapered end drywall doesn't work when framing OC spacing runs off. A main problem with buttseams attached to the framing is that it is a very weak joint because it is attached to the framing. By the time it is attached the ends are damaged and weak and very likely to crack and ridge if the framing moves or shrinks. square box of tissues