how urgent is blown pebbledash?

[tryeraspanner]

I have a detached bungalow with pebbledash allround the top half and brick all around the bottom half.

On one side wall (facing south) the pebbledash has blown revealing approx 3feet square patch of the cement render. Its been like this since last autumn.

How urgent do I need to get this repaired? There is no damp on the internal wall but I'm not sure how water/weather resistant the cement render is without the pebbledash on top.

Thanks

 

[Static]

Best get it sorted before the winter frosts.. or more could come off.. unless your not worried about replacing larger areas