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PostPosted: Sat Jun 23, 2018 1:02 pm 
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Hi,
The previous owners of my house painted the wall in some really weird way. Please see attached picture. The paint job appears to be lumpy. Is there an easy way to make the walls look smooth?
In another room I scrapped all the paint off the walls...ridiculously hard work but I can confirm it is not the walls it is the paint job.
Cheers
Tee


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PostPosted: Sat Jun 23, 2018 2:04 pm 
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:welcomeuhm:

Is that an internal wall in a UK house?

The problem is simple. At some point a thick(ish) layer of paint flaked off here and there, they scraped off some of the flaking paint and then painted over. There might have been multiple coats of paint since the flake off, they might have used the load of rubbish paint (Pollycell and others) that is supposed to fill cracks and smothen out walls.

The cure is much harder though. You would normally fill where paint has flaked off in the past and make the surface level with the rest. But it is all so rough that any area you fill will be flatter than the rest and it will too stick out like a sore thumb. It really needs heavy sanding and then filling so you end up with one flat surface. Maybe someone else (not him) will have a better solution, e.g. skim everything :-(


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PostPosted: Sat Jun 23, 2018 4:28 pm 
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As per Och aye's post. a good random orbital sander and lots of elbow grease to get it back to flat. Then fill sand as necessary.

If you have to take it back to bare plaster then a "mist coat" before topcoating.

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PostPosted: Sat Jun 23, 2018 4:33 pm 
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and following on from Wine~o it may be easier to scrape off from where there has been previous flaking as there will be a suspect layer of paint. Areas that flaked and were painted over may need more sanding. All this assuming you might want to go down the route of scraping.


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PostPosted: Sat Jun 23, 2018 4:34 pm 
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Wouldn't a 2000 lining paper hide it? I don't know what the capabilities of lining paper is, but it's not big cracks or holes so would it work?
Also would wallrock fibreliner or normal 2000 liner be better?


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PostPosted: Sat Jun 23, 2018 5:57 pm 
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Lining paper has its uses ...but is not a substitute for proper preparation.

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PostPosted: Sat Jun 23, 2018 7:38 pm 
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Might be worth finding a decorator with a dustless random orbital sander and see how sound he can make the walls then take his call on weather it can be filled and sanded flat or whether it’ll need lining paper.

Either way that has to be sanded.

If you are dead set on doing it yourself then it’s going to cost you a decent sander and you will spend a lot of time on it. And if it’s not dustless and it probably won’t cos they’re about £500, you’ll make your lass as mad as her arse.

Might be cheaper to call someone in for this one.


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PostPosted: Sat Jun 23, 2018 8:58 pm 
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I have a Makita 1/3 sheet sander and I can with some improvisation connect it to an old barrel hoover aquamaster. The thing is it needs the proper papers with the holes so the vacuum can work. Still a lot of effort will be needed.


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PostPosted: Sun Jun 24, 2018 8:23 am 
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dandecor wrote:
Might be worth finding a decorator with a dustless random orbital sander


That would be my thinking.

A Mirka Ceros/Deros with P40 would most likely rip all that back. Once the bad surface was leveled off, you could switch to P120 to smooth it. :thumbright:

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