Silicone coatings

A hydrosilylation curable silicone coating composition comprising:

• (a) an organopolysiloxane polymer having a viscosity of between 100 and 200,000 mPa·s at 25° C., and at least two unsaturated groups per molecule, which unsaturated groups are selected from alkenyl groups or alkynyl groups;
• (b) a filler blend of hydromagnesite, and huntite, which filler blend may be treated with a hydrophobing agent;
• (c) an organosilicon compound having at least two, optionally at least three, Si—H groups per molecule;
• (d) a hydrosilylation cure catalyst;
• (e) one or more silicone resins containing unsaturated groups selected from alkenyl groups, alkynyl groups, or a mixture of alkenyl groups and alkynyl groups, selected from T silicone resins, DT silicone resins, MQ silicone resins, MDT silicone resins, MTQ silicone resins, QDT silicone resins, or mixtures thereof;
• and
• (f) an adhesion promoter selected from one or more monoacrylates, diacrylates, or methacrylates;
• epoxy-containing alkoxysilanes, vinyl-containing alkoxysilanes, alkoxysilanes containing methacrylic groups, or alkoxysilanes containing acrylic groups, and a mixture, a reaction product, or a mixture and reaction product of
• i) one or more alkoxysilanes having an epoxy group in the molecule;
• ii) a linear organopolysiloxane oligomer containing at least one alkenyl group and at least one hydroxy or alkoxy group per molecule;
• and
• iii) an organometallic condensation reaction catalyst comprising organotitanium, organoaluminum, or organozirconium compounds;
• or a mixture thereof.