Stain block

[keenbutconfused]

Really hope somebody can help me on this.

I have a white room that I am going to paint a dark maroon colour.
I sanded down the current white emulsion paint and in a few places have gone down to the bare plaster below. It sort of flaked off. I will therefore need to seal these spots and was considering using dulux stain block.

Is it Ok just to patch these areas or do I need to do the whole wall in order to get a consistent finish all over?

I am concerned that where I use the stain block the new coat of emulsion will go on in a different way to the rest of the wall.

 

[Zampa]

You dont need to 'seal' them as such....and you certainly dont need stain block 9unles you have stains of course, which you didnt mention)

Just treat the bare patches t a thinned out coat of emulsion then a normal coat...but put it on with a roller, this shoulf help match up the different textures where you have sanded the wall to a flatter finish.