Does antifoul lose effectivness

[Sneaky Pete]

I cleaned and antifouled hull two weeks ago with the intension of putting boat into water a few days after. However circumstances have prevented me from launching boat.
Is there a period of time after antifouling that I can keep boat on hard and the antifoul will still work efficiently?

 

[zambant]

Normally yes - check with the manufacturer

 

[pvb]

It's usually ages. Micron, for example, can be left 12 months before launching.

 

[longjohnsilver]

It's usually ages. Micron, for example, can be left 12 months before launching.

Whereas trilux only has a 4 week window. As already said, check on the tin or with the manufacturer.