How To Render A Wall | COMPLETE BEGINNERS GUIDE...FULL PROCESS!

[Music] hello blaine gray plastering beginners and today i'm going to show you how to render the wall so i'm going to show you the full process i'm going to go through each step bit by bit and show you the full process on how to start rendering before we start what i'm going to do is give you a brief rundown on exactly what's involved so there's five steps you've got step number one which is applying the render we call the first coat the scratch coat and just to let you know there's always two coats of render and a traditional sans cement render fixing so you've got the first coat which is a scratch coat you apply it and then you scratch it we'll go into this in pure detail but the reason you scratch it is so when you apply the second coat it's got something to grip to if you don't it'll just fall off so the first stage is applying the second coat and then you rule it which is where basically you get um it's a long metal bar which is flat and what you do is you rule the render flat so you never apply your render and make it flat with your travel you always rule it so it's completely flat all the way across horizontally and vertically so we're going to go into that then the fourth stage is floating it's basically where we continue to flatten the wall and that's when you also start to smooth it at the same time and the fifth stage is sponging so there's your five stages to rendering a wall that's a brief introduction and what we're going to go into this video and what i'm going to do is walk you through each stage bit by bit we're also going to talk about the mixing rendering and i'm going to give you an opportunity to explore that further so what i'm going to do is just jump straight into the video i'm not going to waste any of your time and let's get straight into it the first stage is applying the scratch coat okay let's quickly talk about the mix basically there's three main ingredients to render you've got sand you've got cement and in the top coat which we'll talk about in a bit you've got a hydrated lime these are the three main ingredients that you make and put together to make that sentiment render we're using in this video so the first mix which is a scratch coat is always four sand one cement and some waterproofers and this makes sure that any water that can penetrate top coat is not going to come through into our building so that is the in this edition the additive is a waterproofer the two main ingredients for the scratch coat is sand and cement so you've got four sand to one side one cement it's that simple and what you usually do is mix it with like this or you can use a big cement mixer so that's the mix and by the way at the end of this video i'll um provide a link where we'll go into the mix for render in pure detail so stay tuned for that i'll give you an opportunity to have that it's just a totally different subject in itself but anyway so what i'm doing i've mixed it up i can see the consistency you don't want it too thick you don't want it too runny it's gotta have a bit of body to it when you're applying render it's got a bit of um a bit of thickness because what we are doing this is gonna be an overall thickness of 15 mil so you need it to be able to hold its weight so you do not want the mix too runny as you can see what we're doing is applying the render in little sections so i always fill my hook up which is the handboard i'm using and the trowel is in my right hand but what you really want to be doing is just working in little sections at a time like i said it's going to eat a lot of your render up but what we're doing is we're pushing a lot of pressure behind the trowel to push the rendering to the block work and then from there you want to give it a quick flattened but you don't want to over trial the render what will happen if you keep troweling render you'll pull the mesh from the back of the render and you'll bring it to the front which basically means the render will have no grip to the brickwork what i've done before this as well as i've sprayed the wall down a bit of water and what that means is when you are applying the render it's got something to work to it's got a key to grip to so you always want to be working with moisture on your background before you apply any render you don't want to be rendering when the background is completely dry so like i said we're just applying the rendering sections and we're giving it a quick flattened but not too much well first that's the first stage all we're doing is applying a render there's not much pressure there what i'm going to do is i'm going to show you a little tip i always rule my scratch coats what i'm going to do is give you an introduction that's how to be going to start getting the render flat what i've actually used in this video though is an up speed skin so what i've done now is i've applied the render just before the bead so what you want is you don't want the beat the render to be overflowing you need it to be behind the point that you're going to finish to you need to give room to apply your top coat what i'm doing here is giving the wall a quick flattened i am using nut speed skin don't ever use this for the top coat by the way but it's just nice to use for the scratch because it's nice and easy but as you can see this is how we start getting the wall flat so this is called ruling like i said i'm using a speed skin but this is a quick run down on how you would start getting your wall flat after application what you do is use something that's straight and you rule it flat you never use a trowel and this means it's going to stick to the wall and not fall off the next thing once you've ruled it and so you don't have to really scratch go i just find it's good practice especially especially if you're starting out because it's better to start getting used to the ruling process straight away but what we're doing is applying a scratch coat applying the scratch to the render sorry this is basically a scourer and what it does is it provides a mechanical key and what that means is when you apply your second coat of render it's got something to grip to if you don't do this the second coat will not stick and it'll all end up on the floor so this is a mechanical key and we apply it ourselves to make sure the second coat sticks now you've got two options here i'm gonna finish the top coat and i'm gonna do it on the same day so apply the scratch and give it two hours just to let it dry up and now i'm gonna put the top coat on straight away now usually you put the scratch on wait a day and then top coat it the next day if possible obviously weather dependent i'm gonna do it all on the same day because it's such a small area i don't want to be setting up and wasting time so the process the exact same though regardless which way you do it i've just put a gentle spray of water on this um scratch now but if it was coming day after put a lot more water on just to let it soak up so i'm going to remix the render to lubricate up a bit and then carry on as we were let's do it okay so let's quickly talk about the mix again i'm about to apply my top coat the top coat is slightly different we add lime and more sand to the mix so basically the mix changes for the top coat it always needs to be weaker than the one before it so the new mixture is five sand one cement and i'm adding line to the mix now this is the third ingredient what i talked about before hydrated lime it just allows for flexibility in the render so if there is any movement it's the top coat can move with the scratch and rather than cracking it just gives it more of a chance to um to restrain any movements and buildings not only that but if there is any cracks then what could happen the lime can actually repair itself so with the water the hydra the lime can actually fill in and um and kind of heal itself if there is any damage done so you always want to be adding line to your top coat it's just good practice and as you can see the mix is it's quite you know it's not too thick we can work with it so you never want to render too thick it's just a it makes it quite tough to stick to the wall and not only that it's just hard when your body so that's a quick rundown on the mix for the top coat but like i said check out the end of this video and i'll give you a full guide on mixing render so let's crack on with the rest of the process okay so the next two clips i went to film about me applying the second coat of render and i'm useless with technology i messed up my gopro and i missed two of the main footages so what i'm going to do is revert back to all clips i've done some old rendering videos on your previous channel we're going to walk you through exactly how to apply second color render it's the exact same i'm going to go into it logistically on on why we're doing each section so follow next clip just find out what that's about okay so i'm going to talk you through the process like i said you've roughed the scene we're putting it we're putting the render into the wall and we're just really pushing into the scratch and that's that application of water getting to me that's such a difference you can see from rule the wall you can pull it off and it's not fighting us you still got a lot of moisture in there when you're reeling it's easier it's not pulling and that was definitely the biggest mistake i made in the last video was it's not prying on priming the walls ready for the the top coat and the mix is nice and creamy i don't want your mix to be too thick because you just struggle to spread it and it won't grip properly you went a bit moisture there then when you're putting it into the scratch it's got something to behind me give it a quick flattening nothing crazy now what i like to do is put the render thicker slightly thicker than what we've already ruled and that way we've got something to pull you don't want it to be too shallow because you're forever real enough putting back on again and that's the pain you want to put a section on so that was me applying the second coat what i'm going to show you now is how to rule the render like i mentioned before this is a process of getting the render flat you never do it if you travel and as i've mentioned in this video you don't want to be playing with your render too much because you will make you'll compromise it basically so i'm going to show you what your tools to use to make sure you're going to get that wall dead flat so i'm going to do is talk over this clip it was very windy when i filmed this so um ignore what i'm saying in the video basically what i'm holding here is a feather edge this is the rule i was talking about and this is how we're going to start getting the render flat what you do is you actually scrape the the high spots of the render and what we're doing is we're rolling it flat we're using this as a guide so rather than using the trowel you'd never get the render flat with trowel we're using this tool to ensure that every area of the wall is flat so first of all i'm ruling horizontally this is my usual goal so i always start horizontally uh it's just easier to start with basically i find it easier on the body and it's easier to find a guide but what you're doing is you literally you're pulling any high spots of render um like i said this is why i always try and apply the render a bit thicker the second coat because it means we've got something to work with so as you can see this is dark art to this it looks quite easy but it's actually quite tough ruling render is there's quite a skill to it so it does take practice which is why i recommend you practice with a scratch coat first um and again this is called a fever edge and the point is that it just makes it a bit easier to collect the render and scoop it back in the tub when you're done with it so what we're doing is we're always working vertically as well as horizontally and that means and ensures that the wall is flat both ways you never just rule one way because it it it just it never comes out right and it won't be completely flat all the way around so like i said you rule off you scrape off any render and you always have a clean rule to start with and to end with so now what you do if you have any low spot surrender which you will have you fill any low spots and then what you do is you rule them again so what you find when you do rule the wall you'll find some areas have not been ruled which means there's low areas so what you do is you get the render fill any spots that are low and then you rule it flat again and this is what you want is what you're looking for for your wall to be completely flat and there's no gaps or holes or rivets between the rule and the render that is the ideal situation that's what we're aiming for when we're ruling a wall now we're going to move on to the next stage which is floating which i'll talk about and that's where we continue to get the wall flatter and flatter that's what it looks like when it's ruled ready for the next stage so now we come into the final stages of rendering this is where we get the wall flat smooth and crisp so the stage i'm going to show you now this is called floating i've got a diamond float it's a raffina float but you can just use a plastic or wooden float it doesn't matter what you use and the process is always the same what we're doing is pulling any areas at high any high spots from the render and fill in any areas that are low so let me walk you through that now right we're coming to a very crucial stage of rendering here now this is called the floating and basically what i'm holding is it is actually called a float and what it is is basically a fat flat piece of plastic it can either be it can be pu it can be a wooden flow it doesn't matter which float you use but the process is extremely extremely important so when you've ruled off the render even though it is flat it's never completely flat and there's going to be a few rivets in a few areas that are either low or high and what this does it does one of two things it it scrapes any areas of high any high spots of render it pulls them off and whilst it's pulling the areas at high also fills in any low areas and you gonna have a close-up and i'm gonna show you in detail how it works but basically if there's any low spots so if there's any areas that look rough in the render where basically it's been pulled and what this does is it fills in them areas and what we're doing is starting to get that render smooth once you've done the ruling the ruling process can leave the render very rough serrated and and it leaves it in a bit of a hard way so what we're doing here we're starting to fill in any areas that got affected during the ruling process and what you do is you collect any any fat that you collected from the render when you really float him you're pulling into the low spots so as you could see then i had a low spot render on area that got affected when ruled and i took a bit of excess render and i put it in that hole and what you do is you work in circular motions and it compresses the render it pushes the rendering to itself and it not only makes it flatter but also makes it stronger so look you can collect it i always keep a bit of render in the bucket as you can see there was a few low spots there just apply the render to the low spot and then what you do is you always hold the flow flap to the wall it needs to be flat so you push the float flat and then working in circular motions you start filling them lower you see how where there was a gap before now it's filling in nicely that's because we're using the render and we're compressing it into itself so at the end of this it won't not only be flat but there won't be any holes there won't be any low areas and what we do is we always work towards the bead so what i do is float clockwise towards the bead and then run off the bead as well so by the end of this we'll not only have a flat wall but we'll be in a wall that won't have any holes or hollows or any rivets okay and now the final stage rendering bear with us probably the easiest part now this is probably the easiest stage to rendering this is called sponging all we're doing is giving it that crisp finish now and what i've just got is a standard standard um standard sponge that you use to clean a car with they're called jumbo sponges there in the uk and i'm going to show you the exact process and how to start getting that wall looking perfect so like i said in this clip this is probably the easiest stage to render in rendering is not an easy game by the way and we've took a lot in so far um but basically what we're doing after the floating process the final stage is just to give it that uh just give it that crisp finish that you really like in sentiment and all you do is you get a sponge and the first rule is don't keep your sponge wet so you clean it out and you dr you real punch and you clench the water out of it so you really want a dry damp sponge you don't want a soaking wet sponge because what it'll do is liven up the render and it'll make it it'll bring it back so what you want is to is to keep it damp whatever don't be scared by the way if you see any low spots before a sponge don't try and get it with a sponge get the float back out fill in any areas that need filling and make sure you float it flat you will not get it with a sponge when it's sun comes out you'll see any dashed areas so again straight after the flow you get your damp sponge and you work in little circular motions keeping a real light grip on a sponge you don't want to push it hard into the render it's a real soft grip and what it does is it brings the aggregate from the sand and it brings it to the surface and what this gives you is that nice nice little textured surface in the render and but like i said it's real soft grip and what you you will find is uh the render will collect on the sponge when it does just put it in the water clean it off ring the water off the sponge again and then start again but you never want the render to collect on the underside of the sponge because what it'll do is it'll start pulling lines and the lines will start to show in the top coat so you always want your clean sponge when you're doing this you'll probably see me in the clip going back to a bucket i've just got a bucket of fresh water next to me and what you want to do is just keep the sponge clean that's the biggest rule i can tell you about sponging and the final stage of render just keep the sponge clean so like i said we're just working in small circular motions um we're just basically just giving it that final final finish and look sm small circles nothing big and again running up the beach you really want to call cl pay close attention to um angles because that's probably the most important stage and probably one of the most important areas is to make sure that your angles are always crisp so as you see there was they had undecided the sponge is getting dirty there i've turned it around i've used a clean side and but once you see that where the render is collecting just put it in the bucket clean it off and then start again like i said it's not a wet i'm not getting any moisture onto the render i've never rung the water straight out the sponge you don't want a wet sponge and then if you follow the rules applied in the video you'll get a banging finish so that's the full process as you can see that's the finished wall it's a lot better than what it was and that's it that's a full process on how to render a wall like i said if you click there should be something floating above here that's the video that's going to lead you to the perfect mix and rendering like i said it's a total different process um a total different subject itself so make sure you click that but before you do that please like and subscribe to our video and our channel if you enjoyed what you've seen today i'd really appreciate if you just kind of tagged along and watched us on that journey and feel free to leave a comment we'd love to hear from you let us know what you think and uh yeah thank you so much for watching i really appreciate it and make sure you check us out and keep following so thanks a lot i'll see you in the next one cheers [Music] you

Channel: Plastering For Beginners

Views: 739,895

Keywords: cement render, cement rendering a brick wall, exterior rendering, how to do cement rendering, how to render, how to render a brick wall, how to render a wall, how to render a wall for beginners, how to render a wall outside, how to render a wall uk, how to render a wall video, rendering blockwork, rendering brickwork, rendering cement, rendering exterior walls, rendering outside wall, rendering outside wall mix, rendering tips for beginners, return to sender

Id: -O5r4NhIwSI

Length: 20min 7sec (1207 seconds)

Published: Sat Jul 31 2021