Mist coat shenanigans

Yes.

Yes to the first question?

Contract matt white emulsion diluted to 3 parts paint 1 part water. Mist coat in white then a colour over the top is fine.

Yes, just keep going with the El Cheapo until it is solid white, even mixed Faux-row and Bull costs too much to waste.

i have used screwfix bare plaster paint with success,

but by far the best (IMO) is Dulux Trade Supermatt

Having plastered the whole house and used various hear say mixtures

I've found the quickest easiest and most consistent way to get a good non peeling finish is..... Screwfixes no nonsense bareplaster paint

Just like ronseal it does what it says on the tin.

One coat of cheap,non vinyl, white matt emulsion. Water it down until it loses it's porridge consistency and becomes thin but not too watery.

One coat of this and two coats of you actual paint, job done. That's how I do it anyway and it's my job.

I'm with the above. It's my job as well!

As above. Non-vinyl part seems important ime. Consistency of single cream seems about right using the crown trade matt emulsion that I have.

Yep matt only for mist coats

Just done this on my bedroom.

I used Crown trade white emulsion (£11 for a big tub from Wickes, less a wee discount for a click & collect order via Topcashback 😁). Watered down by ⅓ as above. Worked a treat although it seemed to all disappear into the polystyrene coving I put up and need extra coats 🤔 (probably me being shite at decorating).

Second vote for Dulux Trade Supermatt, I do a watered down mist coat, an undercoat in white, then two coats of the final colour. Use decent rollers and sand between each coat if you want a really good finish.

Get the defibrillators ready for the professional decorators....

I use Johnstones storm shield exterior smooth masonry paint - inside.

You dont die if you keep a window open and hold your breath and squint to protect your eyes.

I have a sand lime internal rendered house, its the only thing that sticks.
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But.... if the paint you've had mixed is one of the new "durable/washable" acrylics then no its a bad idea. If its plain old vinyl matt then yeah

Sorry Fingerbang, as the others have said, I've always just used a seal coat of watered down emulsion.

thanks for all the replies.

I used a mixture of no nonsense bare plaster paint and then Leyland trade mixed 70/30

However, I left the front room about 2 weeks (including the hottest week of the year) to dry before mist coating.  Everything looked dry.  I've just finished cutting in the top coat and it didn't seem to be adhering too well.   I tested with masking tape and the topcoat just rips off.  It must be a drying issue as there is a wall with insulated plasterboard which dried after a week and the topcoat is staying on with masking tape test.

MY question is: if I leave the plaster for another couple of weeks (or longer) will the plaster dry 'behind' the mist coat or is it a case of having to sand off the entire mist coat and start again?

Is the Leyland trade paint contractors emulsion or vinyl Matt ? You don't want vinyl Matt for a mist coat.

Did you water down the bare plaster paint ? Your plaster must have been dry after two weeks of warm weather. We painted a newly plastered room on a Monday when it had been plastered the previous Friday.

Is the topcoat not sticking to the mist coat or is the mist coat pulling off as well ?

Are you using old fashioned brown masking tape or low tack frog tape ? The brown tape will pull off fresh paint quite easily.

Hi I watered down the bare plaster paint but that's not the problem.

The mist coat wasn't vinyl. The top coat is

Im using cheap white masking tape.its not pulling off the mist coat but is pulling off the top coat easily. Also really easy to remove with a fingernail

The top coat was put on Saturday

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I wouldnt worry too much. Ditch the old masking tape and invest in low tack frog tape. Even better, don't use masking tape at all watch some you tube video's on how to cut in freehand.

Any paint that you've damaged already can easily be touched up with a one inch brush.

I definitely wouldn't be considering sanding the walls ,sounds like your mist coat is fine just some minor issues with new paint. Probably not fully hardened yet.

Thanks thebees.  I was only using the masking tape to test the adhesion

I used the bare plaster paint on some walls and was impressed but then switched to 70/30 emulsion just to keep costs down (my message above suggests I mixed the two which is daft)

No worries. I'm sure the paint is fine, just a bit new. Don't go looking for trouble with masking tape or finger nails is my advice !

The one place where adhesion is a real problem is painting acrylic over gloss woodwork. Apply one coat of zinnser bin as an undercoat to avoid adhesion issues.

Agree with thebees, yellow frog tape and if you are using it for masking don’t fully stick it down and peel off gently.