Exterior paint peeling away.

quenching

Can anyone advise why the exterior paint applied to this house keeps peeling away?

Its an old block built bungalow that has been painted several times over the last 10 years and after about 3 years needs repainting as the paint starts to peel away. I painted it myself the first time after removing as much as possible of the peeling paint with a scraper and power washer, letting it dry and the applying good quality exterior grade paint, looked fine for a year or so and then showed signs of peeling again, then after another 2 years it gets so bad it needs doing again.

Even after scrapping and power washing there seems to be a painted surface that refuses to budge, no idea what to is as it was there when the house was bought but a neighbour has suggested that the previous owner may have used some sort of lime whitewash or something?

Photos as below and several more linked here, any advice is very much appreciated.

[IMG]https://lh5.googleusercontent.com/-zThsxauwawY/U8zRdlcm7JI/AAAAAAAANrU/uXqXFm6o56I/s800/WP_20140719_023.jpg" height="449" width="800"[/IMG]

[IMG]https://lh5.googleusercontent.com/-w0KxKb1-Xl8/U8zRZDdoP8I/AAAAAAAANqQ/z55pIP8WdGs/s800/WP_20140719_013%231.jpg" height="449" width="800"[/IMG]

game4it70

You are doing all the prep right with the scraping and power hose bar one thing.
After it dries out treat the area with "stabilizing solution".
If it still looks chalky it would be no harm to give the area a 2nd coat of the solution.

When that's dry paint away with a good brand exterior emulsion.Add a little water to it to help with coverage and adhesion.

Another way is to do the prep and then add this to the exterior paint.Its a bonding agent and i've used it lots of times without problems.

quenching

game4it70 wrote: »

You are doing all the prep right with the scraping and power hose bar one thing.
After it dries out treat the area with "stabilizing solution".
If it still looks chalky it would be no harm to give the area a 2nd coat of the solution.

When that's dry paint away with a good brand exterior emulsion.Add a little water to it to help with coverage and adhesion.

Another way is to do the prep and then add this to the exterior paint.Its a bonding agent and i've used it lots of times without problems.

Thanks for the advice, makes sense of course. I happen to have 2 containers of that bonding agent in the shed left over from when I had some plastering done a while ago.

fussyonion

Have you used limewash on this wall before?

If so, that's your problem and you need to take the whole lot off and put a stabilizing solution on it-oil based-and use a couple of coats and then put on some good brand emulsion.

If you haven't used limewash on the wall, do the same steps as I told you.

quenching

fussyonion wrote: »

Have you used limewash on this wall before?

If so, that's your problem and you need to take the whole lot off and put a stabilizing solution on it-oil based-and use a couple of coats and then put on some good brand emulsion.

If you haven't used limewash on the wall, do the same steps as I told you.

I've never used lime, or can or be sure anyone else ever did either, its just been suggested by a neighbour. The underlying surface isn't chalky and doesn't rub off, feel and looks like normal paint. I'll do as you suggest and report back in a few years