so do you have a water problem next to yourbathtub like this? well if you do, i’m going to be doing an experiment today using schluter’skerdi-band to see if i can waterproof this drywall and prevent this from happening again.so let’s dive into the video. again, this is a total experiment, but i think it mightwork. and i was getting some help from schluter’s technical people. so i’m pretty stoked todo this experiment. let’s do it. first thing’s first, what we’re goingto do is cut any silicone that’s on top of the baseboard and the quarter round here.so i’m just going to slice that. and this is just going to come right off, which isgood. now i’m going to use a razor scraper tocut off any existing silicone sealant that’s
up against the tub surround. now what i’mgoing to do is start right here and slice all the silicone that’s up against the tubthe whole way down because this is where we’re having a water problem. so that’s what i’mgoing to do. not really that hard. and i’m just going to cut across. now there’s papertape here. i’m going to remove all that paper tape. again i’m going to run the razorscraper along the side of the tub. this is schluter kerdi-band. this is waterproofingband that you usually use to waterproof the kerdi-board. but for today we’re going touse it to waterproof this section. so this is what kerdi-band looks like. it’sorange. this is 5†wide, and it’s waterproofing material. so i cut a piece of the kerdi-band,and what we’re going to do is just put it
right over top of the drywall here using unmodifiedthinset. so you can see i just cut it down to size so it comes out to the edge of thedrywall. we just want the thinset to be thick enoughso it’ll stick to a trowel or stick to a putty knife. i just wanted to make sure thati got the right piece of kerdi-band before i start putting in the unmodified thinset.so i’m going to start at the top and work my way down with the thinset. this is a very,very tight space. oh, and the other thing i wanted to point out to you is i could’vetaken out the drywall here and replace it with new drywall. or i could’ve repairedit with cement board and done this. but for right now, this is solid enough, so i’mjust going to put thinset right over and embed
the kerdi-band.so here you go. i’m just going to embed the kerdi-band. now i’m just going to embedthe kerdi-band into the thinset. and definitely squeeze out any excess thinset. that’s whatyou want to do. definitely make sure you get all the thinset off the tub. you don’t wantthis drying. for right now i’m going to clean up theexcess thinset, let it dry, and then come back and put joint compound over it. but we’regoing to let this set up and then come back. we’re on day 2 now. the thinset has setup. and the kerdi-band is completely dry. so what we’re going to do for the next stepis apply a thin coating of setting-type joint compound. before you do that, though, justmake sure that any loose thinset, you wipe
it off the top of the kerdi-band and off theside of the tub if you have a tub surround like this one. the kerdi-band is pretty well-adheredto the latex paint and the part of the drywall that was damaged. yeah, it’s in good shape.in this case, i’m going to be using easy sand 20, so it should set up in about 20 to30 minutes. again this is setting-type joint compound. you don’t want to use pre-mixedjoint compound. i’d mixed up the joint compound to have a consistency of a thick milkshake.it’ll stick to the putty knife here. i’m going to use my trusty 6†knife to embedthe joint compound onto the kerdi-band. so i’m just going to go up and down the kerdi-bandlike so. then what i’m going to do is take my knife and run it up the drywall just tosmooth this out even more.
we’re going to let that dry, come back,sand it, and then prime it. now if your joint compound doesn’t look absolutely perfect,you can always put another coat on top of it. i want to stress that this is an experiment.knock down any high spots on your joint compound with your knife. then you can sand it smoothusing a sanding sponge, my favorite tool for sanding down joint compound. then you wantto apply kilz 2 latex primer to the joint compound. that’s super-duper important.i love using purdy paint brushes. once you get all the primer on, it dries, you can thenapply your latex paint. once this paint dries, i’m going to runa bead of silicone sealant between the drywall and the fiberglass tub surround to make surethat it’s waterproof at that junction.
well this is my experiment on how to waterproofdrywall that’s right next to a bathtub. now ideally you would have waterproofing herealready and then tile over. but i have a fiberglass surround, so it would kind of just look weirdin this case. now this is an experiment, so i don’t knowif it’s going to work. i’ll keep you posted on it. i just wanted to do this and see howit turns out. let me know what your thoughts are in thecomments here on youtube or over on home repair tutor. i really want to get your feedbackon this one. but i’ll definitely let you know how it goes.all right, thanks for watching the video. take care. i’ll talk to you soon.so as a side note, my new tenants are moving
in in about 10 days. so that’s why i wantedto fix this asap. they’re awesome guys. i’m excited to have them on board. beinga landlord is not easy. and finding really great tenants, that’s even harder. trustme. i’ve had really bad tenants before. so these guys i’m excited to have. wes,dan, you guys are awesome.