H
huddsspread
Ok then so how long in the rule book should plaster, gypsum i mean, be left till its dry? 3 weeks? 3 months? As i have people waiting behind me with a brush, and they dont listen!
Painting new plaster a day after its gone on.
- Thread starter dhutch
- Start date
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P
peaps
It didn't bond to the mist coat and that's why it best to prime the wall
Primer also give you better coverage, and hides stains. Anyone can paint a wall but make it look good... I can look at a plastered wall and tell if it's a good job just like the rest of us but to joe bloggs it's fine. Same with painting, my mate always pulls me up on my painting, it's good painting but not in his eyes. I can't gloss a door for **** though. Painting the correct way is an art just like anyother trade.
Which is exactly what a watered down NON VINYL emulsion will do at a fraction of the price!
The problem with sealing in the moisture is that it will eventually have to escape. This will then make the paint system fail.
As mentioned the big problem here is painting over damp plaster. You will need to let the plaster breath as this will help the drying process. Sealing in the moisture with a vinyl emulsion is not the best option!
P
peaps
Not always the case, read hudds post. The plaster draws out WATER and not all the active ingredients in the thinned paint will be pulled into the plaster, it won't key the final coat and it will peel in time, ie: not a propa job.
The same way rock will filter water......
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hud let me show you this paint its dear but worth every penny
ive used it in my kitchen living room and 2 berooms and my hallway so far
you can scrub it with a brillo pad and it still looks nice its sutable for bathrooms as well http://www.leyland-paints.co.uk/leylandtrade_productdetails.asp?prodid=36
"EDIT" it comes in more or less any colour you want
P
peaps
Good paint, they also do quality primers...
http://www.leyland-paints.co.uk/sea...of=FORID:11&ie=UTF-8&q=plaster+primer&x=0&y=0
more reading
http://www.leyland-paints.co.uk/downloads/literature/06_Substrate_Guide.pdf
H
huddsspread
what sort of money are we talking for that then? may give it a go
What has happened in huds case is that the plaster was still drying out. What he did was apply a cheap emulsion (cheap emulsion has either no or very low vinyl content) as a mist which did not peel due to it doing the job of the primer. The red paint that pealed off would have been a paint with more vinyl content and the damp from the plaster has came through the NON VINYL mist coat layer and made the VINYL layers fail as the moisture is unable to pass through the vinyl film.
If he had applied a NON VINYL top coat to the drying out plaster it would have been less likely to peel. But as said painting over drying emulsion is not the best idea!
H
huddsspread
dont call me huds....im brad
i understand the red paint hasnt picked up on the cheap white mist coat, just didnt understand why, now i understand that the water still left in the plaster has come through the mist coat and attacked the red.....problem is i cant leave a room in my house to dry out for 3 or 4 weeks. so as soon as it was pink i painted it, as i always have done.
Amazing what tiles do though....proper expensive though!
i understand the red paint hasnt picked up on the cheap white mist coat, just didnt understand why, now i understand that the water still left in the plaster has come through the mist coat and attacked the red.....problem is i cant leave a room in my house to dry out for 3 or 4 weeks. so as soon as it was pink i painted it, as i always have done.
Amazing what tiles do though....proper expensive though!
get yourself a trade account set up with them i have a cash one set up if you want off the shelf mag i think its about £40 (5ltr) but if you want a colour mixed up its about £63 and if you have an account it ends up @ £51 with your trade discount, a tip if you do give it a go is to water it down a tad as it goes on really thick it spreads lovely, also another tip is haggle with them because they tried to give me a discount which was not as good as the discount i had the previous time they tried to charge me £55, when i said they charged me £51 last time they dropped the price again for me, so theres room in their prices for a bit of negotiation
dont call me huds....im brad
i understand the red paint hasnt picked up on the cheap white mist coat, just didnt understand why, i cant leave a room in my house to dry out for 3 or 4 weeks. so as soon as it was pink i painted it, as i always have done.
Amazing what tiles do though....proper expensive though!
Sorry Brad!
The reason for the red paint flaking off the white is that the moisture from the plaster has came through the non vinyl emulsion
then could not pass through the vinyl emulsion causing it to flake off the white. If you had used a non vinyl emulsion for the red top coat this would also let the moisture through and not react in the same way i.e flaking off.
The problem with using a non vinyl emulsion is that it dries chalky and is not as hard wearing as vinyl emulsion so not ideal in places like bathrooms and kitchens were you need to be able to wipe down. The vinyl in the emulsion gives a more durable finish.
The lack of vinyl in contractors emulsion makes it ideal for priming new plaster walls as long as it is thinned to enable the paint to penetrate the surface.
PS Brad
http://www.duluxdecoratorcentre.co.uk/servlet/ProductHandler?code=DDC10098
Ideal for kitchens and a very good product!
You can get it from all dulux trade centers. They might have to order it though. Also a lot cheaper if you have an account!
P
peaps
Can't knock a nail in a knot.
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