If your wall already painted then no need apply sealant also can

The step would be fixing imperfection on wall, filling up holes and smoothen the wall by sanding or grinding if you want

Then use acrylic emulsion paint as base coat then 2 layer of finishing coat or 1 layer of the colour of similar to base coat

Depends on the colour of your current wall, if it is dark colour and you want to paint to light colour you might need 2 or more layer of base coat to cover the colour so that your finishing coat don't look weird

If you are just repainting with the same colour you can directly go for finishing coat too

@amduser - does it make sense to use a cheaper line of paints for ceilings?

I think there is some form of condesation on your wall as well.
You will need to solve that problem first before patching it up, cuz the condensation will come back again and you will have to re-do again and again..endless.

So i patched my wall using stopping compound as cement is a bit hard to work with, actually both also hard to work with, stopping compound in my bucket dries and hardened before i complete.
Now that i patched, put on a layer of undercoat paint, only to noticed there is hollow sound when knock on patch area, is this normal? It happends to the bigger patch area the hollownsound is like a very hard layer not sticking, the smallet one near the window doesn't have a less audible hollow sound.
Is this normal for a patched wall, or i need redo the patching? Before i eventually paint it
[attachmentid=10547068][attachmentid=10547069][attachmentid=10547070][attachmentid=10547071]

I think so, because the hollow area is near joint of plastered patch and good area, likely i was trying to smooth out that area didnt put much force and density there. I think I'll wait a week more to see if the hollow worsen or spread to other partt, else just paint coat it. Too much hassle and dust to redo especially sanding part..... Fell sick for 2 days after sanding despite wore mask and goggles

Lol, double 3 ply normal mask only.

hello all.  Want to ask noob stuff. My apartment has just been completed, vacant unit as usual. Basic white painting that comes from developer.

Developer used white cheap paint (Jotun Jotaplast Max). I planned to do another white paint over it (with Nippon Paint Easy Wash) once cabinet installations are done.

My questions:
1. I can just paint with Easy Wash paint on top of the Jotaplast Max, right?

2. After doing the Easy Wash paint and let it dry, do i need to use a sealer? E.g. Nippon Paint Vinilex 5200 interior Wall Sealer.

Update to my case. Nippon sent someone over to inspect my walls, and it was due to cracks and ground water seepage causing the efflourescense. The guy used a protimeter to test my walls, and certain areas go up to 50+. As compared to my neighbour <20.

They recommend to jetspray then fix the crack via v-cut, followed by repainting. I asked the Nippon guy for painter contact and today a professional painter texted me with a quote of rm4.5k for an area of  40 meter square, including all materials. Jobscope includes:
Repairing the walls
1 coat flexiseal
1 coat sealer
2 top coat

if you want really easy-to-clean paint choose higher range paint with sheen finish from your preferred brand

i painted both my toilet with Jotun Majestic Perfect Beauty & Care and my room i painted with the cheaper Jotun Easy Clean, the one in toilet is dirt and water resistance now, i can just spray on the wall with sprayer and wipe off the dirt, after a year now it still look new

my room with the cheaper paint still  hold up well, but the matt surface isn't really that easy to clean. imagine you smash a mosquito or cockroach on the wall, some of their remains will trap on the matt surface and need some work to wipe it off, while on a sheen surface you can just use tissue to wipe it clean

do beware if you are hiring others to do the work, dishonest painters might try to cheat you using lower range product or add some powder to increase the volume per bucket so they can get more profit from you

if you DIY, and you are using the higher range product make sure you clean off those dripping paint quickly, i have quite some paint dripping on my toilet tiles and is super difficult to remove even though they have not fully dried

difficult to clean as in those paint that is dripping off during painting? or you use abrasive material to clean the painted wall? i just use wet cloth or all purpose floor cleaner to clean only

Sounds like efflorescence if the white stuff is oozing out from the wall?

i didn't encounter your problem though, there is no noticeable watermark on my wall even though i got shower water and shampoo splashing on it daily

did you apply sealer or primer before you paint? when i renovate my bathroom i sand down most of the old paint, apply skim coat to smoothen the surface and then a layer of sealer then lastly 2 coat of topcoat

Like this. 😔