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PostPosted: Mon Sep 25, 2017 9:59 pm 
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I have a plastered wall (plastered and painted around 6 years ago)
and I have now put a second coat of the same paint
which is Contract 4 Trade Emulsion paint in magnolia,

Most of the walls are fine but I have a patch on a couple of walls.
I'm not sure why, unless its a bit rough and needs sanding then re painting ?

Has anyone any ideas why or should I do the above ?

Any advice would be appreciated.


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PostPosted: Wed Sep 27, 2017 12:55 pm 
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Can anyone comment on this ? or are you all too shy


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PostPosted: Wed Sep 27, 2017 8:03 pm 
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It can be any or all of the following
- higher absorption in the patchy areas;
- short pile roller sleeve or a sleeve that does not carry much paint (poor quality);
- paint drying too quickly;
- too much rollering.

I could also throw in poor quality paint (never heard of it) but I would go for technique first.

The first two photos show technique being the problem. The third I have not got a clue (paint quality?, dirty wall? you really missed that patch badly?).

Don't over roller the paint, don't try to get every last bit of paint from the sleeve. Use a medium pile roller sleeve (e.g. Hamilton's microfibre), load it well but evenly, apply paint to an area and once you have a nice even coat repeat process overlapping the previous area (top down left right kind of thing or floor to ceiling if you got a really good and wide sleeve). Was your paint well mixed (5-10 minutes of mixing time?). It was not the same tin from 5-6 years ago? Is the result after 1 or 2 coats of paint?

On normal paints adding a bit of water can slow down the drying time but it can increase the absorption. Simply, with a quality paint and good tools what you got should not happen.



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PostPosted: Wed Sep 27, 2017 8:31 pm 
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Thanks for the info. It is an old tin of paint.
I will go and buy new one and try again on that wall
after thinning the new tin slightly.

Many thanks for the advice.


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PostPosted: Wed Sep 27, 2017 8:37 pm 
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If it is within budget buy a tin of any of the three below
Crown Trade emulsioin, Dulux Trade emulsion, Johnstone's trade emulsion ... there are others too (I would invest on a good roller sleeve but that is up to you).


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PostPosted: Thu Sep 28, 2017 6:22 pm 
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Looks to me like a change of texture on that area. Sand back till smooth and recoat.

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PostPosted: Sat Sep 30, 2017 7:21 pm 
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Yes thanks, I am going to try sanding and re painting. Thanks for all the suggestions.


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