Hi, i have a wall recently rendered with k rend onto a sound concrete block backing. Unfortunatly the contractor left the top coat too long before scratching back so the result is patchy and neeeds re coating.
The surface was rendered with the correct backing coat and meshed before top coating. If i am to have it re covered with a new k rend finish does the previous render have to come off or can it be over coated?
Any thoughts are most welcome.
Thanks
The surface was rendered with the correct backing coat and meshed before top coating. If i am to have it re covered with a new k rend finish does the previous render have to come off or can it be over coated?
Any thoughts are most welcome.
Thanks