Hi, I'm in a 7 year old double brick house in Perth, moved in about 9 months ago, structural survey all good.
There are lots of hairline cracks on internal (plastered) walls and looking for the best way to fix.
When I accidently knocked into one wall, I noticed the plaster under the paint had a white powder texture when I rubbed my finger over it. Not sure if this is normal or not. I've not come across it before.
I get the impression the previous owner did a quick patch job and perhaps the finish was painted over too soon? Or a sealant missed out? Stabbing in the dark here!
I was thinking of filling in the (very faint) hairline cracks with spec, putting some kind of seal over the wall (what?), and then painting.
Alternatively, it seems I can also paint over with some kind of flexible paint that will fill and paint in the one go?
I did paint over one wall with paint, a couple of coats, and can now only see a few of the hairline cracks.
But as there is so many of them (a big house) was wanting a longer-lasting solution.
Sorry if this sounds a bit dense, have spent ages googling, and still unsure.