Efflorescence, migrated salts found on the surface. Effervescence, forming bubbles. Enjoying your show, learning some great painting tips. Best wishes.
You should never paint straight over watered down PVA. Yeah the PVA will bond to plaster but paint wont bond to PVA the same way. Yeah the paint may last a while but its a weak bond between both and within time peeling, cracking is inevitable......
NEVER use PVA if you paint the walls after, the paint will not stick to it, ONLY use PVA on bare plaster/plasterboard BEFORE you wallpaper, emulsion paints dont stick to plastics
David Blunketts guide dog could have done a better job of the plastering. Glad you were able to sort it out though but it should never have happened in the first place. PVA solves so many problems around the house. Used it to stain block bitumen on a door once. Still looks good 30 years later.
Another great informative vid. I was told to use watered down emulsion to mist coat and pva was frowned upon when I suggested it. They said why pva when you can mist coat and then apply second coat. If you pva you're going to have to apply 2 coats anyway... Its a debate that won't die down Also, do you use a foam gun, as they keep longer than the normal bottles with plastic tubes?
Thanks, not got round to getting a foam gun yet. And for a mist coat it's not true because you end up putting two coats of your expensive paint on anyway. You have to use a non vinyl paint and thin it down loads so it soskes right in for a mist coat. So sometimes it doesn't look solid enough with just one more coat especially if you're using a different paint.
Watered down pva makes the plaster less porous it’s used to slow down the suction and therefore slow down the drying process when plastering. But you should never use it prior to painting. It seals the new plaster and the paint sits on the surface. You don’t want that, a mist coat on the other hand sinks into the porous plaster so that the following top coats adhere properly. I’ve rollered walls over existing paint and the old paint pulls off to reveal a bare plastered wall. This is because watered down pva has been applied or they haven’t used a mist coat. The error is only discovered at a later date. I’ve also seen people with newly plastered walls covered in sticky watered down pva, so they’ve wrecked their smooth walls. Crazy.
Putting masking tape before skimming would have avoided the scrapping and clean..... prevention always better ... hence time saved can do other things like painting... ;-)
Apologies for the questions but when it comes to applying PVA will you have a certain paint brush allocated to this job and guessing it doesn’t have to be top notch. Will a 2.5-3” do the job?
That plastering was shocking ! Will always disagree with your use of PVA for sealing plaster but no point going over that again , really enjoy the videos anyhow.
@Pat C I've had to rectify a lot of work where PVA has been used to seal plaster over the years , i will say though that these lads do use a very weak solution but even so i personally wouldn't trust it from my own personal experience. They do know their onions but i avoid the PVA on plaster method.
@@orbitalforest you are absolutely correct, not using P.V.A.I was a painting contracts manager and would NEVER use P.V.A for a mist coat.Most paint manufacturers recommend that whatever the finish emulsion is, you thin it down approx 10% for the mist coat, and that includes silk or mid sheen emulsion. As you know, bare plaster would generally require 1 mist coat and two top coats, but if you use P.V.A. you would then have to apply another 3 coats of paint in order to obtain satisfactory coverage, especially if the finish colour is light. I knew one painter who would use contract emulsion to size walls before wall papering instead of either glue size or thinned down paste. I suppose I must be old school !
@@orbitalforest out of curiosity, what issues have you actually come across where pva has been used to seal plaster? Personally I use the screwfix no nonsense bare plaster paint, but, I have on occasion used very watered down pva to seal easi fill or fillers at the ceiling like when I need to caulk it for example
that's what I hate about plasters they leave a lot off mess behind for others but the end result was perfect witch a gloss did you use for your wood work.
Would you ever use very very dilute mat emulsion for the mist? Think you have converted me to the PVA. I always dilute PVA round any screw holes skirting cracks etc before filling. Is it ok to keep a bottle of diluted PVA (and/or reuse the bottle)
Is a mist coat, undercoat and priming all different processes? Priming to give the paint something to adhere to? Undercoat to get a better finish and mist coat is a water & paint mix to soak into the plaster?
Very interesting & informative as always, thank you. Just a bit confused, by your comment at 8.08 that you were going to thin the vinyl matt, having stated that vinyl paints shouldn't be used as a mist coat. Having sealed with diluted PVA, why do you then thin the paint for the first coat? And what kind of ratio paint to water please? Sorry if I have the wrong end of the stick!
Thank you... sometimes your paint may be too thick for your need... diluted pva helps with adhesion of the paint but you can still apply your paint too thick leaving brush marks. It's understanding the viscosity of the paint your using.
Who was the plasterer ? Stevie wonder. Hope the customer didn’t pay him!. Genuine question. Why do you pva new plaster. It seals the surface and the emulsion just sits there . One mist coat of emulsion followed by 2 full coats( in my personal experience is far more successful
You can mist coat and it does work done correctly, but mist coat is messy and you use more paint. PVA is a glue and the paint sticks very well never had a problem.
Painting and Decorating . Why I’m asking is... a lot of my customers have watched this type of video and tried doing it themselves , then, either got bored or can’t do it to a decent standard and call me in. Then when I ask them what they’ve put on the walls ... 9 times out of 10 it’s pva , usually that hasn’t been diluted correctly , then I come along to try and emulsion it and have no end of problems !. 37 years and still coming across people who think “anyone can paint”🤬
The data sheet for the paint that you applied clearly states a thinned coat + 2 full coats of paint on new plaster. Why did you totally seal the walls with PVA? If there is any moisture left in the new plaster which clearly you were not aware about you then have a potential problem on your hands. You then say that the walls were damp in one place and then go on to use a damp wall sealer which could if the walls are exuding dampness as you are inferring will then blow off the paint that you have just applied. Surely if the walls were damp they should have been tanked prior to plastering?
No problems and Vinyl paints are no good for sealing plaster as a mist coat. You need to use a contract matt for new plaster work. No damp in the walls just a small patch at the bottom because of the damp course, but that's sorted now.
@@PaintingandDecorating So as you are suggesting if you need to use a Contract Matt emulsion as a the mist coat why didn't you apply one then? In effect you are saying that you have not followed the correct procedure haven't you?
@@bert754 No surprise a paint manufacturer is suggesting to use a mist coat! some also suggest using a super special primer they sell..normally pva based. Pva is cheaper and quicker than misting in my experience, and if done correctly achieve the same thing. Correct procedure..lol.
Yes you could wreck the walls even more quickly with a roller! Pva reduces how porous the new plaster is. The paint rather than sinking into the plaster just sits on the surface and you run the risk of it pulling off the wall when repainting. Use a mist coat. Pva has the opposite effect.
That is one reason but not why totally. A mist coat can be a pain to apply and in my opinion it's not as strong as PVA. Too many times I come across a mist coat that is failing. Strip paper off walls and it brings the paint off as well, but not if you PVA before painting.
@@PaintingandDecorating What if you strip paper off walls and the PVA comes off too? How do I get the rest off, i have bits in the corners and edges. I have tried white spirits, vinegar, hot water, fabric softner. i just want to paint my wall! I have even tried to sand it but it still peels and is never even.
So sick of seeing yet another shoddy plastering job, for the sake of having a bucket of water and a sponge and taking no time to whip around and clean up after. It's always down to the decorator to wipe up, come on plasterers go back to the old school ways of doing a good job. x
hi I have been painting a property which had wallpaper on for 10 years after stripping paper we mist coated walls and painted walls but no matter how many coats we put on there is a patch on two walls. The rest of the walls are great but the patches remain, do you think I should Pva the patches and try again....any advice would be greatly appreciated
It's possibly paste and if so, apply some paint and leave for a few minutes then scrub with your brush. Then roll to give same texture, if this does not work it could be a stain.. stain block needed.. thanks
As usual a well put together comprehensive how to video. Additionally I’m always waiting to see what music will accompany the video. Always an eclectic variety of quality music. Do you play? If so what? Have you thought of crediting music in notes “down below”. Keep up the good work.
Is the foam filler reusable after one use? If i needed a tiny bit would i waste a whole. Thinking just let jobs build up around the house and one time foam away. Lol
@@PaintingandDecorating I plaster, not as an expert doing mouldings and the like, it isnt my base trade, but that that you had to overcome was a poor DIY job. Best wishes.
That plastering, wow. A blind man would be glad to see it...
Another great video!
The more learn from these vids, the more problems I recognise that I can fix. It's a double edged sword really.
Efflorescence, migrated salts found on the surface. Effervescence, forming bubbles. Enjoying your show, learning some great painting tips. Best wishes.
Great video every other trade think it's down to the decorator to put right they should clean their own mess up stay safe 🇬🇧👍🏻
You should never paint straight over watered down PVA. Yeah the PVA will bond to plaster but paint wont bond to PVA the same way. Yeah the paint may last a while but its a weak bond between both and within time peeling, cracking is inevitable......
Yeh I over skimmed a ceiling that had been unibonded then painted with silk. Nightmare just had massive blisters. Had to be over boarded.
NEVER use PVA if you paint the walls after, the paint will not stick to it, ONLY use PVA on bare plaster/plasterboard BEFORE you wallpaper, emulsion paints dont stick to plastics
Hello. I need to learning paint plastic or satinée
Yep, i learnt that lesson the hard way.
Exclente video!,,, thanks for your time sharing it
Thanks your welcome
David Blunketts guide dog could have done a better job of the plastering. Glad you were able to sort it out though but it should never have happened in the first place. PVA solves so many problems around the house. Used it to stain block bitumen on a door once. Still looks good 30 years later.
Who plastered that.. when I work my plaster is on the walls only when I’m finished.
The amount of PVA I've gone though renovating Ralph's House is unbelievable......good stuff though :)
Nice work as always.and yes always been a PVA fan. Never had any issues with it. Top man. 👍🏻👍🏻
Thanks 👍
Another great informative vid. I was told to use watered down emulsion to mist coat and pva was frowned upon when I suggested it.
They said why pva when you can mist coat and then apply second coat. If you pva you're going to have to apply 2 coats anyway... Its a debate that won't die down
Also, do you use a foam gun, as they keep longer than the normal bottles with plastic tubes?
Thanks, not got round to getting a foam gun yet. And for a mist coat it's not true because you end up putting two coats of your expensive paint on anyway. You have to use a non vinyl paint and thin it down loads so it soskes right in for a mist coat. So sometimes it doesn't look solid enough with just one more coat especially if you're using a different paint.
Watered down pva makes the plaster less porous it’s used to slow down the suction and therefore slow down the drying process when plastering. But you should never use it prior to painting. It seals the new plaster and the paint sits on the surface. You don’t want that, a mist coat on the other hand sinks into the porous plaster so that the following top coats adhere properly. I’ve rollered walls over existing paint and the old paint pulls off to reveal a bare plastered wall. This is because watered down pva has been applied or they haven’t used a mist coat. The error is only discovered at a later date. I’ve also seen people with newly plastered walls covered in sticky watered down pva, so they’ve wrecked their smooth walls. Crazy.
@@mikedavies3361 so you're saying this vid is wrong?!
The end music sounded like something out of a 70s porn video 😂
My goodness that is dog 🐕 rough !
Putting masking tape before skimming would have avoided the scrapping and clean..... prevention always better ... hence time saved can do other things like painting... ;-)
Who plastered that stevie wonder.
I've seen far worse by professionals, it's literally roll of the dice with plasters
That's a 0ne coat!! Really disgusting work from a so called professional!! I'm a plasterer and I wouldn't leave my first coat like that!!
Apologies for the questions but when it comes to applying PVA will you have a certain paint brush allocated to this job and guessing it doesn’t have to be top notch. Will a 2.5-3” do the job?
That plastering was shocking ! Will always disagree with your use of PVA for sealing plaster but no point going over that again , really enjoy the videos anyhow.
Thanks, and yes plaster was bad.
@Pat C I've had to rectify a lot of work where PVA has been used to seal plaster over the years , i will say though that these lads do use a very weak solution but even so i personally wouldn't trust it from my own personal experience. They do know their onions but i avoid the PVA on plaster method.
Spot on.
@@orbitalforest you are absolutely correct, not using P.V.A.I was a painting contracts manager and would NEVER use P.V.A for a mist coat.Most paint manufacturers recommend that whatever the finish emulsion is, you thin it down approx 10% for the mist coat, and that includes silk or mid sheen emulsion.
As you know, bare plaster would generally require 1 mist coat and two top coats, but if you use P.V.A. you would then have to apply another 3 coats of paint in order to obtain satisfactory coverage, especially if the finish colour is light.
I knew one painter who would use contract emulsion to size walls before wall papering instead of either glue size or thinned down paste. I suppose I must be old school !
@@orbitalforest out of curiosity, what issues have you actually come across where pva has been used to seal plaster? Personally I use the screwfix no nonsense bare plaster paint, but, I have on occasion used very watered down pva to seal easi fill or fillers at the ceiling like when I need to caulk it for example
Why is it bad when not diluted, does it effect the painting process?
Looks good from my house (the plastering)
that's what I hate about plasters they leave a lot off mess behind for others but the end result was perfect witch a gloss did you use for your wood work.
Would you ever use very very dilute mat emulsion for the mist? Think you have converted me to the PVA. I always dilute PVA round any screw holes skirting cracks etc before filling. Is it ok to keep a bottle of diluted PVA (and/or reuse the bottle)
Not really feel out with mist coating years ago, and yes you can keep diluted PVA. thanks
Is a mist coat, undercoat and priming all different processes? Priming to give the paint something to adhere to? Undercoat to get a better finish and mist coat is a water & paint mix to soak into the plaster?
Yes 👍
Very interesting & informative as always, thank you. Just a bit confused, by your comment at 8.08 that you were going to thin the vinyl matt, having stated that vinyl paints shouldn't be used as a mist coat. Having sealed with diluted PVA, why do you then thin the paint for the first coat? And what kind of ratio paint to water please? Sorry if I have the wrong end of the stick!
Thank you... sometimes your paint may be too thick for your need... diluted pva helps with adhesion of the paint but you can still apply your paint too thick leaving brush marks. It's understanding the viscosity of the paint your using.
Can use a roller or is it preferred a brush
Who was the plasterer ? Stevie wonder. Hope the customer didn’t pay him!. Genuine question. Why do you pva new plaster. It seals the surface and the emulsion just sits there . One mist coat of emulsion followed by 2 full coats( in my personal experience is far more successful
You can mist coat and it does work done correctly, but mist coat is messy and you use more paint. PVA is a glue and the paint sticks very well never had a problem.
Painting and Decorating . Why I’m asking is... a lot of my customers have watched this type of video and tried doing it themselves , then, either got bored or can’t do it to a decent standard and call me in. Then when I ask them what they’ve put on the walls ... 9 times out of 10 it’s pva , usually that hasn’t been diluted correctly , then I come along to try and emulsion it and have no end of problems !. 37 years and still coming across people who think “anyone can paint”🤬
@@PaintingandDecorating try paint for new plaster from Wickes, always use it and never have a problem, a bit expensive though.
I have a large ceiling of that 70s sauna style wood panelling and I want to paint it white. Could I use pva on it before printing? Cheers
The data sheet for the paint that you applied clearly states a thinned coat + 2 full coats of paint on new plaster. Why did you totally seal the walls with PVA? If there is any moisture left in the new plaster which clearly you were not aware about you then have a potential problem on your hands. You then say that the walls were damp in one place and then go on to use a damp wall sealer which could if the walls are exuding dampness as you are inferring will then blow off the paint that you have just applied. Surely if the walls were damp they should have been tanked prior to plastering?
No problems and Vinyl paints are no good for sealing plaster as a mist coat. You need to use a contract matt for new plaster work. No damp in the walls just a small patch at the bottom because of the damp course, but that's sorted now.
@@PaintingandDecorating So as you are suggesting if you need to use a Contract Matt emulsion as a the mist coat why didn't you apply one then? In effect you are saying that you have not followed the correct procedure haven't you?
@@bert754 No surprise a paint manufacturer is suggesting to use a mist coat! some also suggest using a super special primer they sell..normally pva based. Pva is cheaper and quicker than misting in my experience, and if done correctly achieve the same thing. Correct procedure..lol.
Would it be quicker tou
apply pva with a roller?
Yes you could wreck the walls even more quickly with a roller! Pva reduces how porous the new plaster is. The paint rather than sinking into the plaster just sits on the surface and you run the risk of it pulling off the wall when repainting. Use a mist coat. Pva has the opposite effect.
@@mikedavies3361 confused as that goes opposite to whats in the video
@@mikedavies3361 wow...thanks for this tip
What's the benefits of using watered down pva vs a mist coat of matt? Or have you used pva because the vinyl paint cannot be watered?
That is one reason but not why totally. A mist coat can be a pain to apply and in my opinion it's not as strong as PVA. Too many times I come across a mist coat that is failing. Strip paper off walls and it brings the paint off as well, but not if you PVA before painting.
@@PaintingandDecorating Thanks for the quick reply! I will give it a try next time!
@@PaintingandDecorating What if you strip paper off walls and the PVA comes off too? How do I get the rest off, i have bits in the corners and edges. I have tried white spirits, vinegar, hot water, fabric softner. i just want to paint my wall! I have even tried to sand it but it still peels and is never even.
I can use Polyvinyl alcohol for finish coat? Ratio mix pva _ sand _ cement? Tks
The plasterer wants shooting 😮
So sick of seeing yet another shoddy plastering job, for the sake of having a bucket of water and a sponge and taking no time to whip around and clean up after. It's always down to the decorator to wipe up, come on plasterers go back to the old school ways of doing a good job. x
hi I have been painting a property which had wallpaper on for 10 years after stripping paper we mist coated walls and painted walls but no matter how many coats we put on there is a patch on two walls. The rest of the walls are great but the patches remain, do you think I should Pva the patches and try again....any advice would be greatly appreciated
It's possibly paste and if so, apply some paint and leave for a few minutes then scrub with your brush. Then roll to give same texture, if this does not work it could be a stain.. stain block needed.. thanks
@@PaintingandDecorating thankyou
Pva before painting?I thought you put a paint mist coat instead..?
Yes After paint
As usual a well put together comprehensive how to video. Additionally I’m always waiting to see what music will accompany the video. Always an eclectic variety of quality music. Do you play? If so what? Have you thought of crediting music in notes “down below”. Keep up the good work.
Hi great video, can up use diluted PVA and then mist coat just wondering
Thanks and no one or the other.
Hi there, can i use this PVA prior to splashback tiling?
Yes read instructions on PVA it should say required strength needed for tiling over old tiles also sealing before tiling.. thanks
Had a guy on one of your other videos who's a plasterer telling me that I'm doing it wrong if I use pva
No your not, plasterers don't use it like decorators we thin it down loads.
@@PaintingandDecorating I know I'm not and told him that used it loads of times never had an issue.
Hate sorting out after the plasterers been
The mask on so we cant lip read you calling the 'plasterer' everything.
🤣🤣
Fuckin ell did he use his hand to plaster it 😂
🤣🤣
Way to wet that pva mix
Where do you find the best prices for your paints? I keep looking round for the cheapest prices...
Trade account Dulux center
@@PaintingandDecorating thanks bud 👍
The paint shed is usually not bad aswell
Is the foam filler reusable after one use? If i needed a tiny bit would i waste a whole. Thinking just let jobs build up around the house and one time foam away. Lol
You can watch this video it may help th-cam.com/video/T_-i4daG-b4/w-d-xo.html
@@PaintingandDecorating thank you just checked it. Very useful
Nice Vid Thanks
that was no plasterer that played with that gypsum! Best wishes.
Thanks, maybe, not sure really only doing the painting.
@@PaintingandDecorating I plaster, not as an expert doing mouldings and the like, it isnt my base trade, but that that you had to overcome was a poor DIY job. Best wishes.
Good luck rather than best wishes
Dog rough plastering, did the client do it?
put a little sbr in your unibond 1 to 8
🖌👍
he aint a plasterer mate
Get th laddie to plaster they said🙈
Rainbow motion 🤔
Yes, best way to lay off paint on a wall when using a brush..
That is some shit plastering
200%
Pva can play exterior wall stucco