HOW TO TAPE 45 DEGREE CORNERS

not long before this beautiful corner was here it was bare drywall and I bet you want to know how I got it there well back in the day you used to just have paper tape and you try and sort of mash it in there and make it straight it would follow the framing in fact it would even do its own thing overtop of good framing but along came the composite corner beads tada no coat and other such products there's also things like straight flips but let's take a look at what we have in here so this comes on a roll and what it is is a paper composite so plastic on the other side paper on this side flexible corner bead can be used on inside and outside corners this is what I like to use on every off-angle corner that's what we call a corner that is not ninety degrees so we stick this on like any corner bead or paper tape with taping mud or heavyweight all-purpose mud so if you take a look it's nice and flexible can be put on any inside angle or outside angle - once it's bent it starts to get pretty rigid and doesn't flex around a lot so it stays nice and straight this is the no coat Ultraflex 450 so this is the widest one they also have a 350 that's a little more forgiving to apply but doesn't straighten out the corner is nicely so the best time to install this is after you've already done all your corner tapes I now have my corners taped and it's pre filled so I think this is going to be the easiest sequence for people who don't do this often now one of the hardest things about working with this stuff is getting it nice and snug getting a nice snug fit from corner to corner so you can sort of try and hold it and wrestle it from one corner to the other and cut it and you may wind up too long or short or you can also wrestle with your tape measure from corner to corner and then try and roll this stuff out on the ground with your tape measure and I've done both both are a bit of a challenge so today I'm gonna actually try something new so first I think I'll rough cut this too I'm gonna but this corner up with a few inches going past the wall over there so this is now probably about six inches long so I'm going to start by folding this stuff in the direction I wanted to go and I want the dark line facing outward stuff is like wrestling a snake there we are right in the corner I'm gonna give it maybe 1/16 of space not all the way in you don't want to damage this stuff now that I have it stretched and pulled tight from the other side I can now start to see where it's gonna be so I'm gonna probably cut it a bit long still and I just eyeball it straight still needs a little more okay that is hold tight I do have a tiny gap and that's okay well split the difference when installing it I'm now gonna mug the corner up from end to end I'm just using a 5-inch knife making sure to make sure that the bead of mud is wider than the no coat I'm gonna thin it down a little you don't want too much under it when you're installing it just enough to make it stick and float out any inconsistencies so I'm just making sure that this is about an eighth of an inch thick you don't want too much mud under here unless you have a big wave you're trying to get out of here but generally the more mud you put under here the more you have to take back out when installing it now that I've got an even spread of mud from end to end I'm ready to install it you can also use just about any of these vinyl composite beads no coat is one of the most popular but there's a whole bunch straight flex makes one there's a bunch of them and they're all pretty similar no code I think was just one of the first ones that was really good in reliable creasing it like an inside corner so it's looking pretty good I have less than an eighth of a gap on either side so here's a little trick to squash the mud out from here you can use your snips you just use it like that and it pushes on either side and helps embed the trim and push some of that excess meadow [Music] you can also use the heel of your knife so now I'm sure that I've gotten the plastic part of the note coat firmly up against the wall with most of the mud pushed out and I can now start wiping out the excess mud from under the tape on flange of it you really want to make sure that this edge is squished down and you've gotten most of the mud out and left just enough to embed it you also want to make sure that there isn't high spots in here because what you need is some light right here you need there to be room to fill so this is what I mean see that little sliver of light you want that same width right here good good good good okay so I'm all set up for an easy coat on this and we'll do that tomorrow cuz this job is big enough that I can let everything air dry overnight so one other quick thing to note is on a really short angle like say about six inches long or even 10 inches long I don't bother using no coat in an off angle like this or like this in fact ones that are acute angles I actually just use paper because if you're skilled at installing inside corner just paper tape you can pretty much always do these zones with paper tape and it's not a problem it's these ones that usually require a flexible trim to get a nice straight line another thing I should mention is that when installing these especially on ones that are an even shallower angle you really want to make sure that you actually get it where your corner is you might even need to pull it off and take a look and make sure that it's actually in that corner and then kind of jiggle it until you know it's found its place because it's really easy to install these especially on the shallower one in the wrong spot what that's gonna do is it's going to make it so that you're gonna have to bury the line on one side and the other side is going to take a huge fill it just won't look right and never make it look nice and straight so it's now time to put my first coat on the no coat so it's kind of an ironic name but anyways I can see the tape state where I wanted it so I've got a little bit of room to fill there's a bit under 1/8 maybe like a big sixteenth so I'm just gonna pick the mud up on one corner my blade like so and just run it down here and the most important part here is do not bury this blue line if you start to bury this blue line then you're gonna have to sand it out and you're gonna give yourself a nasty looking corner so I'm working back in towards my wet butt joint here so I'm going to feather this edge the bottom and I'm gonna feather this top edge now that both the edges are feathered it's just a quick finished pass into the butt joint lifting off right into the wet mud same thing on the top basically get the mud on the corner of my knife like so and again don't get it all the way into the corner where you want it feather my edge feather the edge in the corner need a little more right here so that's the further in here let's take a closer look at that so as you can see you can still see the blue line everywhere and you can just sort of see the tape shadowing through so there's not too much mud on there which means I had the bead on nice and tight anyways that's how it should look the deepest part of the fill is right about here so this is how to chance to dry it's time for my second coat over top of this bead I'm gonna scrape up any little chunks but it's generally looking really nice and smooth so on my last coat I was using a six inch knife on this coat I'm gonna be using an eight inch knife to go just a little bit wider than the original line I'd left there so it's basically the same thing just go almost right up to the corner bring it back into this butt joint over here okay so now it's the same thing feather the edge feather the top edge and then just a nice smooth pass to leave a really nice thin coat over top it'll stand out real easy I do the same thing to the top let it dry and tomorrow sand it now that this finished coat is dry it just needs a quick sand with a bowl sander and a sponge so I'm gonna start just by burning down my edge and stand up in here a little bit [Music] [Music] and then you're gonna want to get right into the corner and get anything in there that isn't there it never hurts to shine a light on your work so you can see what you're actually doing because if you don't you're not gonna see what you're doing until you put paint on it and then you need to do touch-ups instead of being able to send out a mistake that might be there from sanding and when you get to your corner and the little bits you can't get out you just gently scrape in there and that is a nicely finished off angle corner and when you're finished the most important thing you want to make sure of is that you can see that blue line everywhere as long as you can see that blue line you know that you're gonna have a nice straight corner well that's how I install these corner beads and that's how this got looking like that so thanks for watching Vancouver carpenter I hope you found this video useful and until the next video

Channel: Vancouver Carpenter

Views: 165,493

Rating: 4.9252338 out of 5

Keywords: drywall, angle, corner, 45, degree, off-angle, 90, tape, how to tape, no coat, bead, perfect, mud, taping, mudding, paper, mesh, metal, spackle, paint, repair, fix

Id: 65Id0fuTCj0

Length: 14min 26sec (866 seconds)

Published: Wed Dec 26 2018