Shall I sand this plaster?

[accelerator]

Hi Guys

I have had a section of wall replastered. The below pic shows the border between the existing painted wall and the replastered section.

Do you think it's a good idea to sand down the border in an attempt to improve the finish? Or will it do more harm than good?

Thanks

 

[PrenticeBoyofDerry]

Sanding the plaster will leave scratch marks, what I would do to get a nice smooth finish in that area, is sand the roughness off, then fill it out again with some form of filler(poly etc) or jointing compound (easifill) then re-sand to a smooth finish.
This will hide the scratch marks.

 

[accelerator]

Thanks for your reply. I am thinking it would be good to sand off the roughness too. I have bought an Oakey sanding sponge which has 180 extra fine grade and 240 super fine grade, so I might try that and see how we go.

Rgds

 

[PrenticeBoyofDerry]

For repair and patch jobs using fillers or jointing compounds, 120 grit to 180 grit should be sufficient.

 

[sparkwright]

Using a scraper should help you to clean back some of that mess before you start filling/repairing.

 

[Deccy]

First thing I would do is roller on some emulsion so it will highlight your problem better plus this would give the filler better adhesion than straight onto dry bare plaster.