How to Paint New Plaster - a Complete Guide

today's video it's all about this painting bear plaster I'm gonna be showing you what paints to use how to use them and in the process revealing the old secret that the big DIY chains might not want you to know in the room that I'm going to be painting today is the main bedroom in our old cottage now painting new or bad plaster has for some reason become an incredibly perplexing complicated subject for us DIYs so I'm going to keep things as simple as possible today by dividing this video into three sections the easy part surface preparation and then the two more tricky areas choosing the right paint by which I'm talking about making your own watered-down mist coat or using one of the ready-made bare plaster paints available in the market and finally choosing the right tools taking into account your project and budget whether those be pro or semi-professional tools like this or cheaper DIY tools like this what do we mean by surface preparation well there are two points to make here the first one is the plaster must be completely bone dry before you start painting and working out if your plasters dries pretty simple if it's this color you know it's dry if it's still dry and you'll see obvious damp patches like we had here when jarred my professional plastering mate was plastering this rave a few months ago and the second point to make is now is it time to remove any slight imperfections on the surface before painting examples might include minor trowel marks like this which I've filled with a bit of my favorite easy fella 80 grit sandpaper I recommend 180 I think hundred-twenty is still a bit rough as it can scratch the wall as you see here and brush strokes like this [Music] and the same 180 grit sandpaper I know this is a pain but it's the way to achieve truly professional finish with your painting so the plasters dry the surface is prepared and now we need to prime or seal the plus so with one to two coats of paint but why do we need to seal the plaster and what paint should we use well the trouble of the moment is the plaster is in a very porous state so if we just paint a normal emotion onto that plaster the blast will suck the water out of the emulsion the paint will dry too quickly and then now or possibly later when you apply a second or third coat you'll find that the original coat starts peeling off because that first coat basically has no roots or key into the plaster below so what you need to do is apply a watered-down coat of emulsion and it's just watering down that is why it's called a mist coat because it paints a lot thinner it sinks into the plaster and in the process properly bombs and a deer's to it which gives you a really good base coat to paint on top of a couple of final points never use a paint with a word vinyl in it or for that matter a diamond matte or flat matte like one of these for the miss coat and secondly in spite of what you may have learnt on the Internet never be tempted to apply a PVA coat to the wall before painting because with the vinyl additive in the emotion or the PVA coat all you're doing is you're basically creating a skin over the surface of the wall now this is going to cause a massive problem down the line if you ever need to repair or sand that wall and in the worst case scenario you could at some point find that that coat that skin starts peeling off and so I tend to use contract amount emotions like this to mend my miss coats because they're good quality and cheap and a 10 liter tub like this cost less than 20 pounds but a word of caution don't assume that all contraband emotions can be thinned down and this was brought to my attention to several months ago when somebody commented on a previous miss coating video I had done to say they'd bought some Valspar contract mat emotions and having watered it down and painted it on a babbler to wall it was coming off like dust on their hands I had a quick look around being cool other day when I was researching for this video and I was surprised to see that that's absolutely right the Valspar specifically says in the back it cannot be thinned down whereas the Dulux and the Leyland contract matte both direct to be thinned down if you're painting on to bare plaster so it can be a bit of a minefield and I advise you to read the back of the tubs carefully before you buy your contract matter motion in terms of the percentage it you can thin your paint down you will not get a definitive answer on this because opinions vary so widely Armstead say up to 20 percent water leyland say one part water to nine parts paint or 11% and Dulux say up to 10% personally I go a lot higher than this up to a 50/50 ratio and in today's video in fact you'll see me using up to 80% water to my paint but that's just my experience after doing a lot of mist coats and never having so much as appeal or a crack in the paint but it takes a brave man to go against manufacturer guidelines so I would suggest to you the sweet spot is somewhere between 15 and 30 percent so that's preparing your own miss coat and you'll see me mixing it in just a minute then what happens if you just can't be bothered well as luck would have it there are specialist products on the market now like this that you can get from screw fix for 18 pounds 99 for 10 eat a tub this paint apparently does not need to be watered down and can be applied to the bare plaster to be brutally honest I wouldn't have bothered buying this if it wasn't for the fact that I was trying to make this video as comprehensive as possible it's the same price as the on state contract matter motion I've got which is obviously going to go so much further because I'm going to be watering it down it looks far too thick to my mind to be painted too directly on to bare plaster but for your benefit I can be trying it out on this wall here that's going to be completely covered by yes this is how little confidence I have in this it has had mixed reviews but there are many people who think it's brilliant as don't so we'll see how we get on with this shortly okay we're on to tools full details of which you'll find in the description below the video and masking goggles are always a good idea when sanding and I've included here the sanding block and 180 grit sandpaper you saw earlier we've gone through the paint this 15 litre paint scuttle is a must-have piece of kit when you're mixing large quantities of paint and working with rollers you'll need a larger paint scuttle if you go for one of these monster 15 inch rollers a 2 to 4 foot extension pole like this is a good investment it massively increases your reach meaning you can cover larger areas more quickly and for messy jobs like miss coating it's great because it stops you getting splattered with paint I've used a 4 to 8 foot pole much less but it would come into its own for high ceiling rooms and painting outside of the house you're going to need a mixing paddle and drill driver to mix the thin down paint for getting into the corners you might consider getting a mini roller and sleeve and a mini paint scuttle like this and a few large paint brushes you will see me using this Purdy jumbo mini roller today rather than my standard mini roller nothing wrong with this I use this almost all the time but I'm using this one today because I was intrigued by the fact that not only do they do a four and a half inch mini roller sleeve and they also do a six and a half which I think it's a really good bridge between your much larger nine or 12 inch roller and your mini roller for getting into the tricky corner areas but bear in mind that the sleeves for these jobs no mini rollers are a lot more expensive than your standard mini roller and the attachments are obviously very different so if you invest in a jumbo mini roller like this you'll tied to the Purdy brand and they're expensive sleeves although this roller does screw onto the quick-release extension fold which is a nice touch while it's just on the roller pushes onto it which is also still okay and once you can get plastic sheeting like this to protect the floor I've got several duchies including this heavy-duty one which would be more than adequate to stop the paint getting through although I have got this plastic sheeting to protect the beams now I know we're seven minutes in but please bear with me because I've got some really important buying advice do anything like me over the last seven years at times you've used some pretty basic tools and in my last Mis coating video I got attacked quite aggressively by painters for using a kit like this but that criticism whilst uncomfortable was well-founded because quite frankly there's no comparison between the budget Harris roller that I've used in the past and the Johnstone's fat hog accessories featured in today's video just a quick release extension pole just exudes quality and whilst you've got the ability to put your rollers onto the end like that quite frankly with this twisting mechanism why would you because this is so much more secure the difference in quality and the roll of frames is obvious and the roller sleeve you buy from your typical DIY store are going to be narrower in diameter and therefore will carry less paint and give you less coverage how often you go have a roller sleeve like this completely slide off the roller whilst you're painting well this simply can't happen on a quality piece of kit like this because the sleeve is mechanically fixed to the arm and the cage frame also gives you a properly tight fit so get yourself down to your local decorators Center whether that's Brewers Dulux or Johnston's and see what they've got to offer don't be intimidated they're not just for trades I split two Johnston's about this the other day and they said they massively welcomed members of the public you're going to get much better quality advice than you get from your typical national DIY chain and you're going to get them better quality of product because they're catering for professional tradesmen now a conscious it could be seen as being a bit arrogant look at me with my smart tools so have a look for yourself at the alternatives being offered in places like being key but fundamentally tools like this are going to last and they're going to make your painting so much easier and there's one other point I should make the cost of these two might surprise you paint scuffles wherever you going to get them from again it cost under ten pounds and here are the typical prices at Johnston's for the tools featured in this video I should add that I'm not being paid by Johnston's to do this video and I brought all the tools featured today at full market price and you might be surprised to know they've got offers on all the time such as 4 pounds 50 for this 9-inch cage frame roller and 1699 for this quick-release extension pole which is basically 50% off so you can buy all the main tools featured in today's video for 32 pounds a great price for a product that's going to last but you should also consider buying your paint direct from the manufacturer through one of their decorator centers rather than from a national DIY chain and this is the secret I was referring to at the start of this video in some cases the National DIY stores dictate to the manufacturer the price they're prepared to pay for a particular line of paint and then the manufacturer has to manufacture that paint to that price if you know what I mean this means that the quality of that paint could be less if you bought it from a national DIY store rather than direct through the manufacturer from their decorators Center ok so we're into the business end of the video finally I hear you say I'm not using my smooth roller today instead the semi rough with its high absorption and transfer rates ideal I think for an emotion miss coat now these dual function double arms come with a bar and also shorter bolts because bizarrely with some roller sleeves the hole doesn't pass all the way through the roller whereas for others they do the shorter bolts are great though because it's a bit of a faff to try and guide the long pin all the way through the sleeve and I suspect this is how the shorter bolts came into being I also have a semi rough sleeve for my 9 inch roller but didn't end up using this roller in today's video so effective was the 12 inch so it was a quick stir with the Armstead contract matter motion and then I pulled 3 litres into the paint scuttle which when watered down ended up being a perfect amount to do the ceiling and three walls of the room notice the consistency of the un-- watered down paint which is pretty much identical to the screw fix bare plaster paint that you don't have to walk down the massive benefit of this 15 liter capacity of paint scuttle isn't giving you the ability to makes large quantities of paints if I'd use something like this roller tray which holds less than 1 liter I'd have had to mix the paint in a larger bucket and constantly decant it into the tray so into the 3 liters of paint I initially poured just under a liter of water and mix it up with the paddle mixer freezing my two to four foot bulbs get started however although a fairly watery consistency in the scuttle when I started rolling it onto the wall I wasn't happy with the consistency it was too thick for my liking so I ended up putting a further half a liter into the mix and then surely after the whole 2.5 liters making the mix just shy of 50 50 or nearly one part water to one part paint depending on how you want to look at it now I'm not from minute suggesting you do this particularly given the manufacturer recommends you only water it down 20 percent compared to my 80 but I've done every room in my house this way with excellent results and I know that the paint has properly sunk into the plaster you might think it sounds too thin but look at the finished results which my wife remark looks like a nun watered-down emulsion and you don't want to worry about the consistency when it goes on because when it's dried it looks very different [Music] [Music] [Music] [Music] now applying misko is meant to be a really messy job but when you look at just how little paint actually fell on the floor while I was doing this I think it's testament just how good these high absorption high transfer roller sleeves really are and it's particularly remarkable when you think just how much I watered down the paint we've got one more left now which I promised I'd reserve for the bare plaster paint they always say tools different pet first thing you notice when you're painting all this fur plaster paint is it doesn't go nearly as far on the roller as the water down dissipated and it's just about painting a normal paint onto the wall basically [Music] so with all the plaster work primed what do I think of that bare plaster paint well clearly the coverage is excellent it's more opaque than the heavily watered down miss coat that I applied but panning around the room you wonder whether that increased opacity is really important given that we're going to be covering it in a minute with two coats of this high opacity flat matte and don't forget I use two liters of that bird plaster paint on this wall behind me compared to three litres for the three other walls and ceiling of this room so clearly the contract matter motion of water down goes a lot further and I appeal to the inner DIY guru inside of you to simply buy yourself a mixing paddle and water down a good contract matter motion rather than going to the expense of buying one of these bare plaster paints because don't forget the unknown here is what's going to happen to this wall when we apply the final top coat to it but that's just what I think painters DIYs let me know in the comment section below how you got on with a bad plaster paint and generally what your sweet spot is for watering down a contract matter motions so that's today's video finished it's been a bit of a marathon with 156 individual video clips and 105 photos to compile this video don't forget links to all the tools and paints that I've used in today's video will be in the description below the video together with some links that you might find useful to help you decide what topcoat to apply once you've Misco to your wall I hope you can stay tuned during this unprecedented global pandemic we find ourselves in during this difficult period of self isolation I'm gonna be posting various videos on my channel which I hope you'll find useful if you've enjoyed today's video do please click on the like button below and as I always say if you're new to my channel I would absolutely love having you subscribed it means so much to me and you do that by clicking on the link here see you soon

Channel: Charlie DIYte

Views: 613,794

Keywords: mist coat, new plaster, paint new plaster, how to, first coat, mist coat new plaster, how to paint new plaster, first coat on new plaster, base coat on plaster, painting plaster, trade bare plaster paint, how to paint bare plaster, charlie diyte, watering down paint for new plaster, best way to paint new plastered walls, first paint on new plaster, contract matt emulsion

Id: jTjlaAU1NzY

Length: 19min 13sec (1153 seconds)

Published: Sun Mar 29 2020