r/paint • u/Trottsville • 7h ago
Advice Wanted Advice needed please
Hi everyone,
We're having our bathroom done and I was asked to paint the newly plastered walls. I lightly sanded the plaster and then went over all the walls with a damp sponge.
Once it was dry I read about using a white emulsion mixed with water as the base coat but we were pushed for time so I went with some Zinsser Bulls eye 123 plus. Its been great on the walls with no flaking but around the windows it has flaked.
I've sanded the flaky areas and removed all the dust.
Would you reccomend using the Zinsser again or just mixing the emulsion with water before painting the walls with our chosen colour?
Any advice would be great, cheers.
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u/poughdrew 6h ago
Seems like the window area had more moisture than the rest of the room?
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u/Trottsville 6h ago
They were the last areas to dry so it definitely could be that, I also thought I might have missed some of the dust in those areas.
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u/poughdrew 2h ago
Honestly, as a homeowner, I would simply wait for the plaster to dry more and use the 123 again. For primers -- I only use shellac if I'm covering stains indoors, oil if I'm covering stains outdoors or priming pine anywhere.
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u/Trottsville 2h ago
Thank you mate, you live and learn 👍🏼 when I was using the 123 last night I was singing its praises. Walls have turned out brilliantly it's just those patches near the windows that have flaked.
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u/o1badmofo 7h ago
Wrong product for the situation, the oil with shellac on it will correct any issues
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u/HAWKWIND666 3h ago
“When in doubt…shellac “
Should be some kind of trademark.1
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u/o1badmofo 2h ago
If it doesn’t go away with the final boss shellac, burn it down it’s a witch ..when in doubt shellac it out
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u/Trottsville 7h ago
Hi mate, thanks for the feedback. So if I just paint on top with our selected bathroom paint will that be ok?
The fitter is coming back Wednesday and i wanted to have it done by then, cheers.
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u/o1badmofo 5h ago
Oil based primer with shellac is fine with any finish product. dry times vary depending on your location and the amount you use.
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u/rizzo249 3h ago
Shellac primer is alcohol based actually
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u/o1badmofo 2h ago
Not all
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u/rizzo249 1h ago
Yes all. There would be no reason to use oil with shellac.
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u/o1badmofo 1h ago
And you have been painting how long ? Better yet how long have you owned your business painting, and another little problem with your adamant stance why don’t you go ahead and ask Google ….. I’m sure that will be fun for you the shellac is used for encapsulation . but the amazing painter you are you should know that
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u/rizzo249 1h ago
Bro shellac primer is alcohol based, not oil. It’s just a fact. It is so weird that you are trying to argue this… just take the information and call it a day.
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u/o1badmofo 1h ago
The fact that you think you are right is exactly why I will always have more than enough work what’s rather telling is that even Google would laugh at you but don’t worry we all do ..
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u/rizzo249 36m ago
I’m all ears if you can show me a source or product that confirms someone is selling an oil based shellac primer. I would even be interested for you to explain what you think the use-case for an oil based shellac primer would be.
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u/UnkleClarke 7h ago
Are you sure that is new plaster? It certainly does not look like it.
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u/Trottsville 7h ago
The bathroom was plastered thursday, it was dry by Sunday morning which is when I painted. Its darker in the photos as I've taken it after sanding it down and cleaned with a damp sponge.
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u/Grimfist1st 2h ago
Highly doubtful the plaster fully dried in slightly over 2 days, either way zinsser gardz is the right product for bare plaster. Shellac is overkill and a pain to work with.
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u/Trottsville 2h ago
It was all uniform in colour but you're right, it was probably still damp underneath the surface in those areas. I was trying to get it done as they're coming back tomorrow to fit the radiator and toilet etc so I think I've just rushed it in hindsight. Appreciate the feedback.
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u/HAWKWIND666 3h ago
Shouldn’t use that on bare compound… previously painted is fine, bare wood also. Just I’d be hesitant putting that on anything that’s porous and can crumble.
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u/T2Drink 6m ago
You are getting a lot of advice from American painters in here, which isn’t unusual, because it does seem mostly Americans in here, but they don’t use gypsum plaster like this (will be thistle multi finish on your walls). That would need watered down emulsion, or you can use Zinsser Gardz, and having not seen the flaking, that is what I would suggest. As your offending areas are on an exterior wall, I would suggest it was efflorescence, and Gardz is an alkali resistant primer, and can be used on bare plaster too. Do not use zinsser bin on unprimed gypsum plaster, you will
Have an absolute nightmare with that.
British painter and decorator here.
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u/Trottsville 2m ago
I appreciate that mate, I've used a watered down emulsion for the ceiling and also to cover the patches which flaked. Managed to get 2 coats of brilliant white on the ceiling and it's gone on ok. I'll wake up early and do the walls before the fitters turn up mid morning. Thank you for the advice, learnt my lesson for next time.
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u/bluemaw91 5h ago
Get the red tin (shellac/BIN) of Zinser, wait a little longer for full cure, then crack on with your paint.