Painting/decorating advice needed

Jeepers_Creepers

Something like : https://www.screwfix.com/p/flexovit-hand-sander-185-x-93mm/9350g along with https://www.screwfix.com/p/aluminium-oxide-sanding-roll-unpunched-5m-x-115mm-120-grit/38512 should do the bulk of this job, used as lightly as the conditions determine.

You'd probably want some 180 grit - finer - for sanding down filled holes afterwards.

You'll know how good the results are after that first coat of trade emulsion as Davey says.

jackspade

Thanks again guys and Jeepers
That white stuff on wall im not sure if its former white plaster or white paint, it didnt bubble up with paint stripper, it just turned into some sticky goo and it seems to wash off with just warm water and scrubbing action.
some area's are still slightly damp and tacky from paint stripper so will wash those with the sugar soap and then a final warm water rinse and let dry.

Ok , ill do some more work on wall and update as I go/ need help.

Jeepers_Creepers

Probably just old paint. It wouldn't make sense for it to be a different layer of plaster.

Some paints don't work well with stripper, and I suspect emulsion paint is one - I'm not too surprised it didn't 'bubble up'. Tbh, I wouldn't expect anyone to tackle a whole wall with 'stripper', just to rub it all down to flatten and key it for a fresh coat.

The fact that the white layer does come off with firm wet scrubbing suggests it's normal matt emulsion paint.

You need to get every trace of stripper off now or it'll come back to bite you! You don't really need to remove every trace of the white layer, tho', provided it's clean and feathered nicely into the bare plaster parts. But, I guess if it comes off without too much hassle, then you'll at least know you'll have a good even surface to start painting on. Your call.

If it's tough going to remove it, tho', then why not try an area to see if you can stop the prep where you are? Ie. Choose a couple of square metres with both 'white' and 'bare' parts, and clean it to remove all traces of stripper. Allow to dry. Lightly sand with the block and 120 grit - just enough to flatten and key the surface. Don't let the bare plaster get damaged if the paper is too coarse. Brush down and wipe with a damp cloth to remove dust.

Roll on a coat of slightly-thinned white trade emulsion. See how that turns out.

Slinky

Blimey, you lot have way more patience than I do. I'd hang lining paper and paint on top.

Alanp

No need to strip a painted wall, I use fine surface filler to fill any minor holes ( no need to sand, or very little) , then paint topcoat over old paint, I guess the op will learn, we’ve all been there it’s how you get more confident ( and better) at DIY

Grenage

If the paint is thick then stripping is sometimes easier but edges will often feather fine.

I'd sand it all to remove loose paint and then sugar coat it.  A mist coat will give you some idea of what it will look like; throw a normal coat on if it looks ok.

jackspade

Heres a picture of "ridge" between the bare plaster and the previous layers of paint, the ridge looks too deep to sand down looks like I will need to use paint stripper to get it all off   ( not that white paint, look at the layer with the grey paint above I know its blurry )



the other pic if the crease between 2 walls ( walls are at 45 degrees angle ) that needs attention,  do I need to use joint compound and paper here or can it be just filled and sanded as normal

Grenage

Someone was a bit keen with a scraper in the corners!  Yes you can fill and sand that section; no joint compound required.

Well you can try with the sander and see how it goes, but I'd probably scrape the paint off with something like this.