Hi, I decided to repaint a room in the house, and one wall had been painted around 1.5 years ago in a dark Teal. I was advised by my mum to put 3-4 layers of a cheaper paint on this particular wall (done over the course of 4 days) before applying Valspar for the final 2 layer. However upon looking at the firs Valspar coat the next day, it’s cracked in large areas really badly!
I sanded it down and then repainted but it’s done the same thing. It’s matte paint on matte, and I left each coat 24 hours to dry.
Can anyone advise me how I would be able to fix this? Again my mum has told me to sand the cracked areas, and put PVA on those parts, let it dry and repaint, but I’m not sure this is the correct way and I don’t want to be still trying to fix it in a months time.
Thanks in advance!
Are you a tradesperson and able to answer this question?
Try painting the wall using stain block first. This happened to me once before and that sorted it.
Answered30 May 2020
3
Anonymous user
Hi
I will recommend you to cut all the cracks with stanley knife, then fill all the cracks and leave it for dry, sand all the wall before applying one coat of mist coat, after that check your wall with fine sand paper g240 and apply final coat(2 if need).
I would think the existing paint was perhaps a silk finish rather than matt? Putting a cheap retail brand over that will almaost always end up with issues. To make the matter worse, you've put a lot of coats on.
Firstly - give it a few days to dry properly and make sure the cracks aren't getting worse. You could then try roloing the walls with Zinsser Guardz which will prime and seal and also bridge cracks if they are not too deep - give it two coats if it helps. Once you've done that you should be able to pply the top coat.
Please don't use PVA anywhere you're going to paint - it will make things worse.
If that doesn't help your problems you have a couple of options left - either sand the paint right back again to the teal and start again (with a go
od trade paint) or use a heavy duty lining paper and then paint that.
The crack has nothing to do with stainblock. You need first to open the crack with a blade.After that clean the crack from any dust with a dry brush.Thin some pva bond with water and apply it with a brush in the crack.When it's dry, mix some easy fill with water and apply two coats letting it dry very well in between the coats.Then sand gently with 120 sand paper and apply again pva mixed with water. When it's dry you can apply two top coats of mat emulsion paint.
