Your help on this one please

[hollybank]

Been to look at a job tonite,the internal walls have been rendered with sand and cement and looks like they have not been devil floated before it was skimmed,so inevitebly it has cracked where the render has shrunk and the skim is hollow over the walls.I have to take off the old skim and rekim the walls,do you think wba would provide the key before skimming or will i have to get the angle grinder out to create the key.

 

[Freerider]

WBA will be fine, PVA would be fine

 

[beddy]

wba would do it but if your not sure go over it with a skutch hammer. a grinder would be too much

 

[hollybank]

Thanks fellas thought as much just needed a second opinion you know what its like friday night total mental block