1. PREPARATIONS
Begin by wiping the surface of the wall clean. If the surface requires a deeper clean, use Tikkurila Maalipesu cleaning agent to remove any unwanted dirt and leave to dry. Lay down dust sheets to protect the floorspace and cover mouldings and sockets with masking tape.
Sand down any well-attached varnish until matt and remove the sanding dust with a dust brush or a dust-binding cloth.