They give the adhesive a good surface to attach to. Now in order to do, that we had to drill these holes, and we had to put the conditioner in that would seal the old plaster. This is designed specifically to reattach old plaster to wood lath, brick, or masonry. What we're going to do next is inject A specially-designed adhesive. It's important after you finish using the sprayer to run clean water through it so it doesn't clog up and you only get one use out of it. Now, we're going to put conditioner on this side as well. Okay, now I'm going to take back to stream and into the holes. Okay, we'll let that conditioner set up before we put plaster on it. While I have the conditioner Out, I'm going to take and spray down the lath and the edges of the raw plaster, which helps seal it and helps the new patching plaster that I put in bond to the old stuff and to the lath. Okay, what you do is you put on spray … and you put that tip right up to the hole and you spray in. What it does is it gives the adhesive a good surface to bond to. This is a conditioner that's a very important step in this whole process. It's important to get as much dust out of there as you can, so that's why we vacuumed the holes. When you drill through the plaster, then it stops. This is a 3/16-inch masonry bit, will not dull as it goes through the plaster, but it will not drill through the wood lath. It's important the type of type of bit that we use to drill these holes. What we're going to do is we're going to reattach the plaster to every lath. So, because of that you can see how loose it is. The plaster is loose all the way around, because when they cut this off with a reciprocating saw, it jiggled all the plaster and that's what made it fall off. It doesn't take much to get these keys out of here, but they’ve got to be gone for the plaster to attach. Now that we have that lath in there, we're going to clean out this is key right there, and then we're going to do the adhesive work around the edge. So, I'm going to back off a little bit so I can get plaster in behind it. Oh boy, that tightens it up real nice right there, real nice. I'm going to stick this in here and do a couple things: I'm going to attach it to this piece of framing here, and I'm going to try to attach this this duct to it as well. Okay, I'm going to cut this to, say, 14-1/2 inches. But that's good because it'll reinforce everything. So what I'm going to have to do is … glue the lath to the back of this plaster to hold it in place.
Unfortunately, when they cut the lath off to put this duct in, they cut it off at the stud, so there's really no way to attach it here.
Let's measure up and see what we can do for wood lath in here. I'm going to pre-drill this one so it doesn't split the lath any further. Then we need to stabilize all the plaster around here, and glue that right back to where it was.įirst thing we want to do is to reattach these two pieces of wood. We need to tie this lath down, put another piece of lath in behind here and glue this plaster to it. Reattaching the Lathįirst thing we do is we want to take the grate off so we can see what we have to do to repair this. There are easy ways to do this and hard ways to do this this has been done the hard way, but we can fix it. Today what we're going to do is we're going to repair what happens when you put a duct through a plaster wall and you don't pay attention to the way it's built. I'm Rory Brennan, owner of Big Wally's Plaster Magic and Preservation Plastering. This time-tested repair method restores the plaster wall to good-as-new condition.īelow is a lightly edited transciption of the audio track.
Poking holes in plaster walls can leave bare lath flapping and loosens the plaster surrounding the opening.
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