now I'm going to Bisbee and I want to give you a few tips on rendering I can't promise to make you a skilled renderer so that you can do the whole side of a house but if you want to do any patching or repair work then what I'm going to show you now stand you in good stead okay this is a previously painted surface it was a bit ropey got a few cracks in it so what I've done the render sound the paint's okay so I've gone over with renderers primer made by cement oh and that will give me a key to go on - right I'm going to get some stuff on the wall I want to talk about the mix I use lime in it rather than plasticizer and there are good reasons for that if you want to know why then go to my site self builder dotnet and I'll explain the whole thing there I don't want to slow this down by giving you a long-winded explanation about the business but it is important okay so as you can see I've got it on the wall real crowded on I haven't worried about getting too smooth and what I'm doing now is just dragging a straightedge piece of timber anything you've got that's straight across the wall just to take out the high spots and show up with a low spots are so first thing the would float or urethane float just gently move that around and what you do then is your fill in the hollow spots and you'll move the high spots off basically like using the wood rule but on a smaller thing always do a scrubbing motion with it as well does that help remove it it's all about cooking them all at the right time if you do it when it's too soft just start to take the render off if you do it when it's too hard it's game over but provided the weather's not too hot you've always got a chance to wind up I can generally bring it back even the next day sometimes the next stage is to sponge off now I use this is a solid sponge from Rafina it's actually a render of sponge and again the idea of that is that you're moving the material around but you'll notice that what's happening now is all the little cracks all a bit small tiny little holes are all starting to be filled in so that's just a nice way of finishing the surface off there's also another one called the powder puff which is a nice little sponge normally these are used internally on the plaster board and dry lining that kind of thing to fill the joints in but I kind of like them for using on render they're a bit finer but the great thing is that you just get yourself going with a nice swirly action like that this is a bit damp so you can see what it's doing it's not a bad idea to have it dent you can see that it just starts to fill in all the holes whereas that other sponge is a little bit coarse this one's just that little bit finer so when you've done with that you're going to leave it a week or two generally before you decorate I wouldn't want to go on too quickly with the paint because of the lime is in the render this is actually a very British finish having this sort of fine smooth render on the continent they tend to scrape it and make holes in it and just have a more open texture which is a bit more forgiving and a lot easier to do than this but I kind of like this and then what some people Lin do is scratch through with a spirit level to put lines to replicate block work which is also quite nice if you're joining to render then having a scratch lion food is a good way of hiding the joint it's quite difficult to bring two surfaces together okay so that's the job finished not a bad effort for a plumber really but the important thing is to get it flat you will notice it was a little sequence missing in that footage that was because it got a bit dark for filming but I came back just rubbed it and rubbed it with that would float and that straight edge just to get any ripples out of it and do have a look on self builded up there about what I've got to say about the mix because the one thing I find over and over again is plasters renderers putting a really strong sand and cement mix off that does more harm than good it traps the moisture and it causes cracking which is a disaster so that's the important thing it's too strong it'll crack and that's no good oh and just before I go does one more thing you may notice that there's a color variation between that first panel but I did behind the expansion join and this one I use the same sand the same lime the thing that I changed was a cement I used a different brand of cement and that's why we've got the color variation so if you're doing a self colored job or you're doing pointing get the cement from the same source get enough so you don't have to change and also the same applies for the sand don't change anything midstream so that's it I'm Roger Bisbee thanks very much for watching do remember to go to our site and also maybe subscribed to the YouTube channel so you can keep updated on all the new videos because there's lots more coming