1. Clean dust and dirt from the surfaces using a brush. Remove resin from knot locations.
2. Clean dusty and mouldy surfaces with a cleaning agent, according to the instructions on the label. Cover glass surfaces and surfaces that you do not wish to paint. Carefully rinse the surfaces with water and let them dry.
3. Remove peeling or weakly attached layers of old paint or varnish using a scraper. Remove old, peeling window putty.
4. Exchange wood parts that have deteriorated and become grey.
5. Polish the old, strong layer of paint or varnish until it becomes matted, and then remove polishing dust with a brush.
6. Prime the surfaces that have been cleaned up to pure wood with a wood impregnating agent.
7. Prime nail heads or other corroding metal parts with a suitable anti-corrosion primer.
8. Prime the surface with a window paint that is diluted 5% by volume according to the instructions on the label. Putty the window glass with window putty. Leave to dry for at least 2 days.
9. Paint the surface twice with window paint. Attention! Also paint the window putty.
10. Clean the tools according to instructions on the label, using water or solvent.