How to Install Cement board, all the steps needed form cutting and installing to waterproofing.

so this is a how-to video on on installing cement  back apart from cutting the board to throwing out   the walls to prepping the joints and waterproofing  the entire system everything that is required to   install the board correctly okay so hey how do  you cut the rock it's actually quite simple okay   so I need to cut like an inch and a quarter off  that end I'm gonna make an L for the curb there   cut out like a corner and then I have to cut  a hole so to cut to rock also you really have   to do with your score and snap it you actually  want to try not to use power tools or anything   that will create dust because to rock has  silicates in it and it's not good good for   you to breathe in so you want to keep the dust  down so like I said just score really well with   a utility knife and then you bend it back and  cut the backside and it's all done very easy   to cut if you want you could also use a carbide  scoring tool but then that's you still need to   use utility and I have to cut the the backside  of it when when you bend it over so you know   durock usually cuts very well with utility  knife and the same goes for really any kind   of cementations back a unit except for Heidi  board which is a little more difficult to cut   because it doesn't doesn't score that easily  so in that case you would use a carbide tool you're not going to cut the the hole  okay you can get all kinds of fancy   tools to cut a hole easiest  way to do it get a keyhole saw this is that okay so then you can't use drywall  schools you can't use anything that's not coded   or protected or galvanized these are actually  two rocks truth you can get these ones here   get these ones here to rock do not use drywall  screws because the chemicals in the the boards   are just either away over time so I'll show you  gotta correct screws and you put one every eight   inches I don't want every foot every eight  inches these screws first of all they have   like a little on the inside they have a little  bit of a an edge and what that'll do is it'll as   you screw it in a grind the door rock sunkens  it'll sit flush and also drywall screws which   aren't coated will be eaten away by the do rock  over time okay so I put this level across here   all the studs touch except for this one so I'm  gonna shim that out that quarter-inch see this   one touches I'm gonna catch it no one touches  that one touches that means they're all in plain   but this one here is out by a quarter-inch this  here this wall is way out of whack that put this   level across yeah as you can see that's big  gap on this side on this side and it's flat   over here so I'm gonna furthest out so I'm gonna  shim screw it on and then that'll be all in place here's the first thing I did let's protect  the tough this is a brand new tub I want to   scratch it and only any crap on ok so I'm  putting this new rock on and I further out   on the back wall the blogs already episo--  you can't see it but on this wall here and   so that the when I put the board on it'll go  over the lip and on top of the lip or behind   the lip this way the board will come over  this lip and that's how it's supposed to go   so I'm supposed to go on top or behind that  way you keep keep the water out of the wall so you might wonder why there's no vapor  barrier well the reason is because I'm   gonna waterproof the whole surface of  this de Rock so you don't need a vapor   guard behind if you put one in front in fact if  you put one in front you don't put one behind so I'm staggering the joints I don't have one   line going straight up and down and  I'll fill these pieces in as I go up so I'm putting in the fiberglass mesh tape which  is a new rock tape is in its alkali resistant or   corrosion resistant tape don't use drywall  tape and contrary well tape will deteriorate   over time this has to be alkali resistant  you can't use the drywall version of this   it has to be alkali resistant this is what  I'm pulling up now and then I'm gonna matter okay so this is just since that I'm gonna use and you want to keep that very very  thin so you don't get a hump when   your tile it so you just cold over  it fill the joint and keep it thin   okay so that's all done when  I try it waterproof it with no waterproof this shower now and in  the corners I and in the knee wall I'm   gonna put this fabric turn your faucet  it's a fiberglass fabric and let's get   impregnated with the with the little  proofing and then I'm gonna call the   whole thing with the waterproofing okay so  I'm cutting the fabric fleece corners that   piece goes in that corner my piece goes  in that corner and this goes like this more than a corner like that in this piece goes like that now we're gonna hit this one over  here okay so this is do rock and everyone seems   to think that it's waterproof it's not what a  safe but it's war not waterful I put a sponge   on here just gonna soak up all the water she's  gonna soak it up so you need to waterproof this   and coat it with a waterproofing over here don't  need to because Southside the shell but in the   shower needs to be completely covered two coats  just absorb some of the moisture sucks it right   in you want to make sure you wear gloves this  stuff gets in hand you're not get it off okay   so see how it's been sitting for a while and it's  all settled we'll make sure you start really good get all components all mixed together this is been sitting on the shelf for a while make   sure it's all mixed in together  okay so I mixed up the gnarly okay to roll it on you can use a half inch or  3/4 inch in that role I have to be really like   thick nap to get it on there good I am gonna  give this two coats I'll put some fabric around   the bottom just to make sure everything gets  sealed up nice and in the quantities but I'm   not going to cover the ceiling now the rock  is what is safe but it is not waterproof it   will absorb moisture and with enough moisture  it will soak all the way through so that's why   you coat it with a waterproofing membrane  a liquid apply waterproofing membrane so   that the water any water that gets on the  durak even if the tiles on it gets behind   the tile it will not go through the door  the rock and penetrate into the wall cavity   that's why you waterproof it okay so I'm  gonna give it a coat with a paintbrush and see I have that tape after the it's  there I know that the time is going   to cover all that edge there so I don't  have to worry about getting it on the top okay so I got it all although Colin  isn't everything on and I'm gonna   roll it just in one direction  let it dry and then going in okay so that's one coat I'm not gonna  do the ceiling but that's one coat on   the walls and I went up and down the  next coat when this dries we'll be   side to side and that'll get you that'll  give it full coverage and make the walls   waterproof so it's pretty much dry so  I'm gonna give everything a second coat okay so that's two coats and everything is  wonderful obviously it's gonna dry okay so   at the very end here these just a few  shots of the finished bathrooms that I   was working on I think there's like four  of them and as always and don't forget   to subscribe leave your comments in the  comment section below I will leave some   links in the description and in the cards and  please visit my online store diplomat calm

Channel: Sal DiBlasi

Views: 1,411,942

Keywords: How to install cement board, Installing Cement board, How to apply waterproofing to cement board, how to install Durock, Installing cement board, Installing Durock, How to Build a shaower with Cement board, backerboard, cement board, backer board, installation, bathroom remodel, how to install backer board, how to waterproof a shower, installing cement board on a wall, how to install cement board, how to install hardi backer, how to cut hardi backer, How to cut backer board

Id: rsubb1HuLks

Length: 27min 52sec (1672 seconds)

Published: Sat Sep 16 2017