Aston Martin DB 9 2010 Manual page 251

Polishing
Approximately twice a year, a good quality polish should be applied
and then buffed, using a soft lint-free cloth.
Convertible Roof Fabric
Volante
Do not use automatic vehicle washes. Brushes, detergents
and pressurised water jets may damage the roof fabric.
Do not use power washers. Jets of water may damage the
weather seals and the roof fabric.
Do not use spot cleaners, chemical diluents or any organic
cleaners. If in doubt, contact your Aston Martin Dealer.
To maintain the appearance and condition of the Roof fabric the
cleaning and reproof recommendations given below should be
followed.
This is of particular importance in the case of light colored roof
fabrics.
Do not leave the Roof in the lowered (folded) position for longer
than necessary. In certain circumstances permanent soiling along
folds may occur.
Cleaning
Remove bird droppings as soon as possible. The organic acids in
bird lime can adversely affect the Roof fabric.
A hard brush will damage the fabric fibres.
Carefully vacuum clean the roof fabric to remove any loose particles.
Gently, and evenly, wash the roof fabric using a mild soap solution
and a soft brush.
Rinse the roof fabric thoroughly with clean water to remove any
traces of soap. Allow the roof fabric to completely dry before
operating the roof.
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