Does a light jet wash make the hull antifoul ineffective

[DavidJ]

Out to the boat next week (in Spain) and I have to have the boat out to fit new gear shift cables. They will probably want to give it a jet wash clean (and charge me) but the Seajet hard antifoul works well out here on the hull and I’ll probably just have a slime. Does a light jet wash make the antifoul ineffective?

 

[jrudge]

I was told fresh water kills it but I can’t really see why it would.

 

[Hurricane]

Be careful - the pressure washer in SCM is so aggressive, it would wash all the antifoul off.
As you know - we have Coppercoat which will withstand the high pressure washer but most people in SCM think twice before they ask for a full pressute wash.

 

[DavidJ]

Be careful - the pressure washer in SCM is so aggressive, it would wash all the antifoul off.
As you know - we have Coppercoat which will withstand the high pressure washer but most people in SCM think twice before they ask for a full pressute wash.

Thanks
I think I’ll leave it with a bit of slime. I don’t do any journeys where economy plays.
I will give the SS props a good polish up though.

 

[Portofino]

Blows its erosion bit off .In a word yes .

 

[Seastoke]

Just hose and light brush.

 

[Momac]

I was told fresh water kills it but I can’t really see why it would.

If that was true then antifoul would not work for boats in fresh water.

 

[Momac]

Be careful - the pressure washer in SCM is so aggressive, it would wash all the antifoul off.
As you know - we have Coppercoat which will withstand the high pressure washer but most people in SCM think twice before they ask for a full pressute wash.

Sounds like the people who operate the jet wash need some training.

 

[Hurricane]

Sounds like the people who operate the jet wash need some training.

No, it is actually the jet washer in this case.
The guys who operate it always ask if you want it washed because it is so aggressive.
On the plus side, it does get a lot of barnacles off the props, rudders, trim tabs and shafts etc.

 

[Fishtigua]

Fresh AF will stay active for about 4 months on the hard. Once in the water it's working it's best, depending on the coating. A quick mid-season blast off will not hurt it in the slightest.

 

[Bandit]

Commercial pressure washers with rotary heads such as Demon used by M&G Boatyard in Guernsey are aggressive ( far more powerful than the DIY Karcher models).
For example if the pressure wash operative at M&G is asked for a more gentle wash he will use the non rotary head and keep the nozzle further away from the hull.

Soft self polishing antifoulings such as International Micron 350 if aggressively washed then a fair amount of the antifouling will be lost when pressure washed aggressively.

With the hard antifoulings such as International Ultra 300 there will be minimal degradation with pressure washing.

 

[oldgit]

Soft A/F possibly.
Hard probably not.

 

[DavidJ]

Soft A/F possibly.
Hard probably not.

Thanks. I‘ll check out the slime when the yard does the lift and maybe just ask for a light clean.

 

[[2574]]

No, it is actually the jet washer in this case.
The guys who operate it always ask if you want it washed because it is so aggressive.
On the plus side, it does get a lot of barnacles off the props, rudders, trim tabs and shafts etc.

Presumably they could stand further back?