Step1
Coat the surface of the painting with a layer of varnish to preserve it.
This should only be done by the artist after the painting has thoroughly
dried (about one year on average), or with the assistance of a knowledgeable
conservator.
Step2
Hang oil paintings in places where they will not be knocked over or
scratched. Make sure there is no possibility of water dripping onto it.
Avoid placing oil paintings near windows, fireplaces, radiators, heaters and
a/c vents.
Step3
Remove dust from the surface of an oil painting with a soft brush (goat hair
brushes from the craft store work well) or a pure white cloth. Don't use
feather dusters or sheepskin dusters, which can catch on the surface texture
of the paint and damage the painting.
Step4
Protect your oil paintings while moving. During the move, place them in a
safe location, such as a closet, where they won't be bumped. You also can
move them into your new home first. When your paintings aren't hanging, rest
them, painted side out, against a wall with a padded surface beneath them.
Do not cover paintings with plastic no matter where you store them. They
need air circulation to prevent moisture buildup.
Step5
Never place oil paintings in the kitchen or bathroom. The changing levels of
humidity will cause damage including mold and/or mildew. Do not allow people
to smoke in rooms where valuable paintings are kept.
Step6
Wash your hands whenever handling an oil painting; oils from your hands can
damage the surface.