I know there is a lot of advice about this, but as a beginner, I need advice on whether I should continue with Sanderson primer/undercoat (I think it's oil-based) straight onto the walls (they are fully dry). This stuff is very thick and cannot be diluted - seems wrong to use it on the plaster. I have painted a small patch only and don't know whether to continue. If not, what should I go over it with, to ensure the end result does not look patchy over the area where I used this primer. thanks.
Wow, where to start...? First up, why are you putting primer/undercoat onto plaster? Oil based primer/undercoat suggests it is for trim, ie wood. Are you trying to paint onto fresh plaster/skim or previously painted plaster walls? If fresh plaster give it a mist coat followed by 2 coats of emulsion in your chosen colour. A mist coat is just a coat of emulsion diluted with 20% water (use white as it's a base for whatever colour the walls are intended to be). Some people say use Dulux Supermatt but really any standard white matt emulsion will do the job. Have a look round to see if there's any filling required, yes even on fresh plaster After applying the mist coat, rub down with 80 grit paper to take off any rough bits & fill in where necessary - it's well worth having another look after the mist coat as it's easier to see where needs filling. After any filling rub down again to get a smooth finish where filled. I use Red Devil One Time. If you are painting onto previously painted walls, do as above but a mist coat is not required (ie fill where needed, rub down then apply 2 top coats). Regards to the oil based primer/undercoat you've painted onto the wall already, when dry just rub it down with 80 grit paper to get it smooth & to give a key for emulsion to grip to, then paint over with your 2 top coats. By the way, you can thin oil based products with a tiny bit of white spirit but I've never needed to do so with primer/undercoat.
just to add regarding one time filler..i always carry a tub..use mainly for emergencies now..can flash through quite strongly so needs spotting or bringing forward..as for mist coat i nearly always do 2 coats to balance the porosity of new skim, thats my prefered aproach, then 2 coat finish..i think alot of people are mislead regarding specialist primers.
get a painter and decorator in . Its a semi-skilled trade is painting ya know. You wouldnt try building your own house if you wernt a builder would you?Pay a painter the going rate and you will see the diffrence in quality,painting can be tricky yes but i do believe it is one of the easiest "trades" to pick up in a short space of time.guud luck
Hey that is a great reply. Thank you. Luckily I only messed-up a small area before I realised it just wasn't right, so will rub it down.
Thank you for the reply. I don't disagree with you. In another life I would be happy to train-up as a professional and expert Decorator - I admire good workmanship and fine detail. The problem I have is funds are stretched, otherwise I would hire somebody. So what is the going rate to decorate one standard bedroom from scratch (ceiling, coving, walls and skirting) ?
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