Skimming over joint filler

No prep needed I think.

 

Scrim tape over the joints

 

Scrim joints then pva over any filler before skimming, otherwise the filler will be sucking moisture out of your skim.

 

Watered down. If previously scrimmed, then good to go

 

Is the filler not fixable with a good sander ?

You could hire a pro kit for a day https://www.hss.com/hire/p/drywall-sander-kit

 

http://www.powertool-supplies.co.uk/festool-long-reach-sander-lhs-225-eq-plus-ip-gb-110v-planex.html

Might be out of OP's budget though...

 

Panta, if you haven't skimmed before, welcome to a huge learning curve...

Watch some vids on PooTube to get an idea, and then commit yourself to it with gusto...

One main issue as said above - the existing plaster skim over the tape will be bone dry and very absorbent, so will suck all the water out of you new skim coat in that area - the skim will go lumpy and crumbly and be a 'mare to deal with.

You could try PVAing it beforehand, but this can go the other way too much - be less absorbent than the surrounding bare boards. So what I tend to do in situations like this - where I don't want to PVA everything - is to dampen the dry plaster with a hand-held spray 'mister' like wot you use on plants. Give it some light misting until the worst of the 'instant absorption' has stopped, then you should be good to go...

 

I learnt a valuable lesson skimming my walls and ceiling.
Get a pro in.

 

Yep I will do most things but not put on a finishing coat.

 

Don't know about the OP but out of my budget

Although the Rotex coped very well, a bit heavy for ceilings but a fantastic job, could actually sand comfortably across the board and not remove the paper so instead of knocking of the odd blob or splatter with a scraper, just sanded them off

 

I made a right hash of mine, ended up trying to sand the worst bits, unbelivable mess everywhere.

 

Very valuable lesson. Doesn't matter how easy a spread makes it look, it's not.

I'm also speaking from experience

 

Piece if cake...sort of!!

 

It won't hurt to put a light coat of pva over the lot.

 

Making up the mix and then the race to get the stuff on the wall and get a good finish before it goes off !
Its one of those things that needs a lot of practice, not just to get the finish good but also the speed and the arm muscles.

A chippy mate of mine can get finishing plaster to a marble like sheen but won't paper a ceiling .... horses for courses

 

What did you fill it with. Easy fill is a doddle to sand down!

 

For me it's the finish of the plaster. Anyone can slap some plaster on the wall, but it does take some skill to get it flat and without trowel marks.