How do I fill a fire flue crack in a plastered wall please?

[Andyhannaford1]

Can anyone give me advice on how I can fill a crack that runs from the fireplace in the living room directly up into the bedroom above and continues into the attack?

The crack in the plaster is at least 6 inches deep and follows the fire flue - obviously caused by heat expansion etc.

I filled the crack in with polyfiller about 10 years ago, but is now becoming noticeable again and I will need to fix it again...
any advice on the best way to do this will be greatly received!!
Thanks for your time.

 

[joe-90]

Fill it with polyfiller - it'll be good until 2021.

 

[Alastairreid]

For a longer lasting repair cut the plaster off either side of the crack back to the brick around 100mm, fix expamet down its length, block out with 4-1 s+c and finish with easi-fill.

http://www.expamet.co.uk/

http://www.expamet.co.uk/product/plasterers-accessories/plastering-accessories

http://www.british-gypsum.com/produ...ries/gyproc_accessories/gyproc_easi-fill.aspx