PVA or NOT
- Thread starter Diyisfun
- Start date
Sponsored Links
As a professional decorator, I would say steer clear of PVA. Simply dilute the emulsion as per the "new plaster" instructions.
PVA is a mare when it comes to painting. The moisture in the paint re-emulsifies the PVA and can potentially cause problems.
The job I am currently doing had new chases for the plumbing and electrics. I had to use 40 grit paper to sand away the heavily applied PVA.
PVA is a mare when it comes to painting. The moisture in the paint re-emulsifies the PVA and can potentially cause problems.
The job I am currently doing had new chases for the plumbing and electrics. I had to use 40 grit paper to sand away the heavily applied PVA.
Perhaps...
I still meet plasterers that recommend coating everything in PVA. God only knows why.
They seem to be completely oblivious to the fact that PVA becomes soft when wetted by paint.
For future prosperity- if you are plastering, yup use PVA. If you are tilling or filling outdoors, use SBR. SBR doesn't become soft when wet.
If you are using emulsion indoors, thin the paint according to the manufacturer's instructions- don't do the 50/50 mix recommended by people that clearly don't know what they are talking about.
The internet, and sites such as this are man's greatest gift to mankind but some of the advice that is offered up is just plain wrong.
Sorry if my post seems a bit ranty. I paint for a living and get annoyed with tradesmen who offer bad advice. I am at the end of the proverbial food chain and often have to deal with the bad work undertaken by the other trades.
I still meet plasterers that recommend coating everything in PVA. God only knows why.
They seem to be completely oblivious to the fact that PVA becomes soft when wetted by paint.
For future prosperity- if you are plastering, yup use PVA. If you are tilling or filling outdoors, use SBR. SBR doesn't become soft when wet.
If you are using emulsion indoors, thin the paint according to the manufacturer's instructions- don't do the 50/50 mix recommended by people that clearly don't know what they are talking about.
The internet, and sites such as this are man's greatest gift to mankind but some of the advice that is offered up is just plain wrong.
Sorry if my post seems a bit ranty. I paint for a living and get annoyed with tradesmen who offer bad advice. I am at the end of the proverbial food chain and often have to deal with the bad work undertaken by the other trades.
Sponsored Links
Yes, before the new plaster is plastered, maybe? I'm not a good plasterer or a good decorator, but before plastering a bare wall it would always be wetted, and sometimes a watery mix of PVA brushed on. Not sure what the OP's problem is exactly, more info would be good.
The OP was told to use PVA after the plastering had been done.
Hopefully you will be ok but in spite of what you have read on the web, you shouldn't be diluting emulsion that much.
If the paint manufacturer recommends a 5 to 1 mix, I am more inclined to believe them than someone on the internet who clearly isn't a professional decorator.
To be fair, I guess that (sometimes) they have no way of knowing who is a professional. and who isn't. That said, over the years I have encountered people (elsewhere) who clearly want to believe what they want to believe. They struck me as being the kind of people that buy lots of bacofoil.
People like you and I offer our professional knowledge for free. I got involved with this site because I needed advice with regards to fixing my washing machine and then my boiler. I was so grateful that I had received free advice that I decided to contribute to the forum.
It irks me when people ignore, what I consider in my professional capacity, to be good advice. In the cases where I recommend an expensive solution I do sympathise with them they opt for a cheaper alternative. When the cost is negligible (eg as above), I question why I spend up to an hour a day trying to help people that completely ignore the advice of a professional and just keep hitting on Google's hyperlinks until they find the "solution" that they seem to have wanted in the first place.
My spare time has a monetary value as does that of every profession that contributes to this site. Ultimately we all "pay" to provide our "free" advice...
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
Sponsored Links
