Painting — Will this show through on the top coat?

paperclap

Hi all,

We’re repainting the house.

Original (and quite terrible) plaster. Dips and undulations everywhere. Not really interested in getting rid of those, as I’m not prepared or in a position to re-plaster.

I’ve taken a pole sander and sanded down all the walls. Naturally, it hits the high spots and previous roller marks.

Now what is left is smooth sanded spots, and the texture from the previous paint.

If top coated, will this difference in texture show through? Going to be using vinyl matt, medium pile roller.

Mr.Generous

Yes 100% will show.

twopenny

Yes it's going to show.

I would use a fine filler ready mixed and spatula to fill, then gently use a slightly damp brush over it to smooth. Then sand down when dry (I waited till next day) to the same level of plaster.

I've done it in an old house and been doing that in a bungalow with endless dings dents and you can't see the mend.

It takes a while but put the radio/tv on whatever and relax into it.

You should end up with a perfectly smooth wall.

paperclap

Will it really show this much though?

This is exaggerated, as it’s dark and I’m shining a light from the side.

There is no chance in hell I am getting a fine filler and doing this to all these spots over every wall and ceiling over the entire house.

Here are two photos from the same spot on the same wall. One with the lights on. Another with the lights off and a very exaggerated side light on it.

Grenage

Paint never covers imperfections, although a matt paint can help.  It's a fine filler, a skim, or learn to live with it.

paperclap

But are these really imperfections? They’re not dents or cracks that would otherwise need filling.

The texture has been created from the previous layer of paint.

So in my mind, why would two new top coats not simply create a new texture over the whole lot?

Northern_Wanderer

It's going to show. You can test a coat of paint on it if you wish. As with all painting, the prep is the most important part. If you can't be bothered to prep properly then don't complian afterwards when it looks rubbish.

paperclap

So are you saying that whenever someone fills and sands spots on an existing paint job, they’re expected to sand back the “orange peel” of the entire wall?

FreeBear

Get yourself a few rolls of lining paper. Stick it on the walls, and then paint on top. A thin smear of filler will hide the joins between each drop of paper. Cheaper than getting the walls skimmed.

paperclap

Already gone down the thought of getting them lined. Don’t want to. For multiple reasons.

Why should I see these after two top coats? Genuinely trying to understand. After all, I’ve only sanded back previously painted “orange peel”. So why would top coats with new orange peel not blend this lot in?

Lorian

Difficult from the photos but it doesn't look like just rolled orange peel effect to me. Are you sure it's not paint over previously not properly cleaned wallpaper paste?