Restoring Original Plaster - how to repair lath and broken plaster

hi I'm Rory Brennan owner of big Wally's plaster magic and preservation plastering been repairing plaster for 30 years 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 it's the easy ways to do this and hard ways to do this this has done the hard way but we can fix it that's the good news okay let's go first thing we do is we want to take the grate off here so we can see what we have to do to repair this there we go it's a couple things we need to do we need to tie this tie this laugh down put another piece of laughs in behind here glue this glue this plaster to it then we need to stabilize all the plaster around here and we glue that right back to where it was first thing we want to do is to reattach these two these two pieces of wood I'm going to pre-drill this one so it doesn't split the laugh any further okay those are nice and firm let's measure up and see we can do four would laugh in here unfortunately when they cut the lath off to put this ducted they cut it off at the stud so there's really no way to attach it here so what I'm gonna have to do is I'm going to have to glue the left to the back of this plaster to hold it in place well that's good because it'll reinforce everything okay I'm going to cut this to say fourteen and a half inch okay I'm going to stick this in here and he would took up 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 oh boy that tightens it up real nice right there real nice so I'm going to back this off a little bit so I can get plastering behind it now let me have that laugh in there we're going to clean out this is key right there and I'm going to and then we're going to do the adhesive work around the edge so doesn't take much to get these keys out of here but they got to be gone for the plaster to attach because the plaster is loose all the way around because when I cut this off with the with a reciprocating saw it jiggled all the plaster and that's what made to fall off so what we're because of that you can see how loose it is what we're going to do is we're going to reattach the plaster to every laughs and it easy to find it's important the type of type of bit that we use to drill these holes this is a 3/16 inch masonry bit now the masonry bit will not dull as it goes through the plaster but it will not drill through the wood laughs so when you drill through the plaster then it stops it's important to get as much dust out of there as you can so that's why we vacuumed the holes this is a conditioner that's very important step in this whole process but it does is it gives the adhesive a good surface to bond to it's very necessary okay what you do is you put this on spray you want me run through this put this on spray okay and you put that tip right up to the hole and you spray in how far away well I have the conditioner out I'm going to take and spray down the laughs and the edges of the raw plaster which helps seal it and helps the new plaster the patching plaster so they put in a bond to the old stuff and to the laughs okay we'll let that add heat that let that conditioner set up before we plaster on it okay now I'm going to take this back to stream and into the holes okay now we're going to rub put conditioner and on this side as well there we go now we're ready to do the adhesive work 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 there you go what we're going to do next is inject especially designed adhesive spits this is designed specifically to reattach old plaster to wood laughs brick or masonry now in order to do that we had to drill these holes we had to put the conditioner in that would seal the old plaster they give the adhesive a good surface to attach to now we're going to take and just cut off about a little bit less than a quarter inch of the tip open it up so it looks about like that then we want to squirt in just enough so we can see the adhesive peeking out we don't want any more than that okay there we go we can just see it right over here like that see that release the pressure move to the next hole everyone smile it's good to rinse off the tip of your adhesive cartridge next thing we want to do is take a damp cloth a rag and wipe down the excess adhesive it's important to do this now well it's still soft then rinse out your rag so the adhesive doesn't solidify it first thing we'll do is we need to clamp this thing because this plaster is more than a quarter inch away from the last so we have to clamp this all together and we use these washers and screws which are supplied from the big Wally kits you clamp it till it comes into soft contact you can see a little bit of adhesive coming out there and that's great so I'm going to put another one in right here okay soft contact you don't want to squeeze the adhesive out and I'm going to put another one in down here you do not need to put one in every hole because the plaster has its own integrity now because you put in this new piece of laughs I'm going to include it I'm going to screw that laughs to the plaster and once the adhesive sets it'll be solid over on this side we're pretty tight a little loose right there let's put a little note let's put another one in there when this adhesive sets this will be the plaster will be attached as firmly it was when it was first done okay now I'm going to get the rag and I'm going to wipe that down and we'll make some plaster and we'll fill in the hole now it's time to fill in this hole we have for sale and big Wally's plaster magic we have a patching plaster that's specifically designed to patch old plaster it's not like a modern plaster it made especially for this purpose so what you do is you put some water in a bucket like this mixer like this can be bought at your hardware store and you pour in the plaster until it comes to and peanut butter like consistency the plaster is too loose after you mix it up it falls off and if it's too stiff it'll fall off so you'll know when it's the right consistency that's too loose we need to stiffen that up so we're going to add a little bit more plaster just a little bit now see that's perfect consistency when you mix this up you want to make sure it's like a peanut butter like consistency the idea is that when it's about 1/2 an inch thick and you turn it upside down it'll stay in place okay if it's too loose it'll fall off and if it's too stiff it'll fall off okay what we're going to use this is very nice tool this is called the bucket trowel and use it for getting plaster out of bucket so what we're going to do is are going to just take this up like this hold it up and smear the plaster into this into this space you want to make sure we get plaster underneath underneath the this ductwork we have to leave enough room in the patch and the depth of the patch in order to put the next layer on and fill it out completely and that will happen just after this set in about an hour make sure you tuck this it right in behind okay now we've got the hole filled in all this extra rough stuff plaster I'm not going to worry about it right now after its set up it'll scrape off really cleanly and allow us to add the next layer on but what I'm going to do is I'm going to strip scratch this to allow the second layer to bond onto it really well with a nice mechanical bond traditionally a plaster would use this tool but they're not easily obtainable for most people so what I have found and this is a tile right adhesive spreader and what they do is it's notched to give some texture and this works perfectly in this instance so what we're going to do is we're going to do this we're just going to give it some nice texture to allow the second coat to bond right on to it okay we're done until the sets in about an hour two hours we have we applied the scratch coat of plaster to the patch and we did the adhesive work we the plaster sets up and about an hour but we came back the next day because I wanted the adhesive to set up as well that way we can do the fill coat and just be done with the job okay so first thing we do is take out the washing whoops take out the washers that clamped the plaster well as you can see I'm earlier this this plaster was bouncing all over the place it is now secured in and intact okay now we want to do is going to scrape off the high points of the high points of the plaster and trim it up around the edge as you can see for right here it was so such a small space that we filled it in with one coat of plaster now that we've got that all scraped off and trimmed back I'm going to loosen this screw a little bit so I can tuck the plaster in behind it now we mix the plaster I mix the last batch of plaster mechanically for the mixer and a drill but I'm going to do this one by hand just to show you how it's done it's pretty simple operation put a little bit of water in the bucket then add the plaster just mix it up see how this is a little stiff I'm going to add a little bit more water to it it's always better to add a little bit of water at a time it's very difficult to get water out of this stuff okay good to go because this has a set overnight and dried out a little bit we're going to spray down with a little bit of water so the so it bonds better well he needs a little spritz like that and take your plaster I'm using what's called a midget trowel do this because it's a small trowel and it it's easier to control you can probably get those at any of the big home supply stores this could also be done with a putty knife it just takes a lot longer with a putty knife most important thing is to get the plaster up onto your patch once it's up then you can take your time smoothing it out got that roughed in scrape around the edges so it's flush with the original plaster okay I'm using a 3-inch putty knife because it's easy to maneuver and it helps scrape down the edges of the wet plaster quickly and easily it's okay to leave it rough like this because you're going to scrape it down and even it out after it sets so we'll be back in an hour to do that then we'll put the skim coat of joint compound on it and your patch will be finished okay now that the second coat has hardened we want to scrape it down and clean it up and get ready to put the finish coat of joint compound on what would happen scrape it down everywhere hit see yeah I already hit the old plaster we've scraped down the base coat plaster that we put in we're going to put a thin skin coat of joint compound over to take care of all the cosmetic imperfections and then we'll finish off with a with a sponge it'll be no sanding so first thing you do is you want to get get the material on the wall as it's on the wall then you can then you can smooth it out and make it look good the idea what joint compound is you want to put it on so thin you can see you can see the wall underneath it helps to have different sized knives so you can get every piece every place done you can use almost any type of ready ready-made joint compound they're all pretty much the same thing while you're using it for is to fill in the cosmetic imperfections you may have to do more than one coat but if you do thin coats and finish it off with a sponge and they'll be no sanding involved now that we have skimmed the joint compound onto the plaster we're going to finish it out with a sponge and it's real simple you just go vary the damp sponge you go very lightly over it and it eliminates the need for sanding the advantage of using santé sponging over over sanding is that eliminates the dust which limits cuts down on the amount of amount of the work that you need to do and we want to keep this as simple as possible so if we wipe it down with a sponge there's no cleanup afterwards and it looks perfect now the plaster is repaired we're going to just secure the duct in place and put the great Oh back over it now all we have to do is put the grate on and we'll be finished all the materials that were used in this repair you can buy a plaster magic com there's any videos you'd like to see email us at info plaster matcom and we'll do our best to give you the video that you want Thanks

Channel: BigWalleze

Views: 739,503

Rating: 4.6885905 out of 5

Keywords: plaster repair, plaster, restore, restoration, big wally's, big wally's plaster magic, plaster magic, how to, repair, lath, wall, original plaster, instruction, instructional, guide, big wallys

Id: M4C9ncE2fYA

Length: 18min 56sec (1136 seconds)

Published: Thu Nov 29 2012