Blown plaster Victorian terrace

[Lucy2015]

Hi,
Im totally new to DIY and am looking for some advice. Having recently bought a house I've noticed a large crack appear on a inside wall in my lounge. A builder has told me the plaster has blown and quoted more than I can pay to fix it so I thought I'd do it myself. I'm just wondering if it's as simple as I think. Do I just need to take the plaster that has blown off the wall, I was thinking about going 5cm either side of it and then replaster. Will this stop the crack or will it keep returning?

 

[ree]

If you look below your post to another post: "crack below window on extention" you will find a similar problem and possible solution. There are similar posts at the bottom of the page.

However, you dont post a pic of the crack with some of the plaster hacked away to give a clear view - a pic of the outside wall would also help. Perhaps you will post pics?

Blown plaster all has to come off, & what starts out as a 150mm wide strip can quickly become a large patch(s) - but it must come off.

How come the mortgage survey report didn't pick the crack up?