Can I use the same antifoul

[realslimshady]

that is on the bottom of the boat, on the sterndrive and trim tabs? Everyone seems to have very prettily contrasting colours between hull and outdrives-is it necessary? Or just fashionable ?

 

[neale]

Shouldn't use a copper based antifoul on aluminium drives. It can cause galvanic corrosion of the drives.

Check the tin, it will say if it is suitable for use on Aluminium.

 

[whisper]

that is on the bottom of the boat, on the sterndrive and trim tabs? Everyone seems to have very prettily contrasting colours between hull and outdrives-is it necessary? Or just fashionable ?

Yes, as Neale says. Relatively few hull antifouling paints are suitable for outdrives.

 

[ccscott49]

You need specific aluminium antifoul paint for sterndrives and aluninium trim tabs.
The dire warning above about corrosion, should be taken very seriously.

 

[gjgm]

Trilux is ok on hull and outdrives, and comes in three colours I think.
I guess the reason for using Blakes or Trilux aerosol is that its thinner than building up a layer each year of Trilux antifoul . Cant say I noticed any difference between the two sprays, both seemed as ineffectual as each other against barnacles !

 

[Elessar]

Everyone is right here - and remember to leave a 1" gap on the hull all around the outdrives so your bottom paint (which are all copper rich) is not in contact with the sterndrives at all. A width of standard making tape is just right.

 

[oldgit]

It is also said that you should not use any wire brush with steel bristles to remove old fouling/barnycules/weed etc from outdrive or shield.
Whatever happpened to that rumoured plastic-composite leg from Volvo ??????