Prepping (sanding) a wall for paint thats been plastered?

[kilo_4que]

Hi guys ive had some drylining done downstairs and skimming done upstairs. Reason being that my intention was not to do the upstairs but due to some unforseen circumstances i had to do the upstairs also but with a tighter budget.

The plastering has been done very very good but where the two different types of walls meet i need them to blend in.

Now I know i need to sand the blended plaster and feather it out but what would you guys recommend? Shall I do this by hand or use a power sander of some sort. If you recommend the power sander route, would you say a orbital sander or a normal sander?

Furthermore, there was another part where an old socket was removed and blanked off. I can feel the plaster lumped a little here, again what is the best method to rectify this i.e. where i paint, not being able to tell there was somethin there

cheers

 

[Zampa]

I would rub down as much as possible by hand or a sander fill the wall with a wide filling knife, rub down and line the whole wall with 100 grade lining paper..you may be able to get rid of the bump but there will always be a difference between the old wall and the new smooth plaster.

(wet the bare plaster wall first before you fill it otherwise the filler might not stick to well and/or will absorb to quick into the surface, making it hard work to apply.)

 

[kilo_4que]

zampa thanks for the much needed reply. I have just purchased a orbital sander as it will break my hands doing it by hand.

Regarding the bump, this is part of the new plaster, it lumped up a little where a socket once was previously

Regarding filler, would Easi Fill be good for the job?

also shall i use pva for the filler to stick or would plain water be sufficient?

 

[Zampa]

Easi-fil is an excellent choice IMO

Leave the PVA alone!!!....just wet the wall first, it'll be fine.

 

[kilo_4que]

i just hope I can get a more or less seamless finish once painted

I am at the moment finding it difficult to locate timber studs in the ceilings even with the aid of a stanley stud detector