Sorry to bang on about antifoul

[Nick2]

Its just that the marine people have written to me with a number of recommendations for my boat with the most expensive one stating "The antifouling is beginning to flake away from the gel coat and we would recommend that all the old antifouling be scraped off and the hull abraded and primed prior to reantifouling"
Now I had reckoned on the new antifoul but not for this extra £700 expense- does this sound essential as the antifoul looks to me as if a jet wash and new coat might surfice for a year or two?

Nick

I am nolonger a puppet.....

 

[ccscott49]

If the antifouling is flaking away, it will need to come off, however if the antifouling is only coming off in a few places, then a spot job of scraping and then some antifoul primer, then antifoul will probably do for a year or two, BUT if it shows in a couple of years time again, then I would also reccomend the lot off, but I wouldn't scrape it, I would get somebody in with the "farrow system" of blasting to get it all off and slightly abrade the hull for the epoxy hi-build antifoul primer. IMHO

 

[Tiger Rag]

I would agree with Colin if the flaking is only localised then you will probably get away with at least another season maybe two. It is worth thinking about scraping back the antifoul properly about every five to six years, you'll get much better adhesion and obviously a much smoother hull, have seatrialed yachts before and after scraping back the hull and have seen performance increase of up to 1.5 - 2 knots.

 

[longjohnsilver]

Colin I assume the farrow system is what I would call slurry blasting. Suggest you do a google search for a company called Symblast, they seem to be the experts for this treatment.

 

[DepSol]

Had all the barnacles on my new boat scarped off then had it power washed, he then keyed the hull put two coats of some water proof paint then four coats of primer then two coats of antifoul. £350 all in for a 26 foot boat. All expensive antifoul aswell.

It si always best to look around and find out who has the least growth on there boat in your marina. Some antifouls work better in different areas. My FIL uses blakes and gets lots of long green weed hanging from his boat and I use International and dont get that weed hanging from mine.

Best to ask around.

Dom

Ok so he's not santas Elf but he is an Elf !!

 

[ccscott49]

Yes its a type of slurry blasting, but uses a plastic blasting medium, which is kind to the hull and will take off a paint layer at a time if you want it to.

 

[DavidJ]

While on the antifoul subject. Where I have my boat (Sardinia) it seems to be standard practice to put 2 coats on the bottem and 3 on the sides where the most build up seems to be.
David

 

[omega2]

Why take their word for it get down there and assess it yourself

J HAMER

 

[ccscott49]

I'll remember that, hoping to winter there next year, at that place you told me about, just can't remember where it is again!! But I'll be antifouling in April, so I'll remember that and put extra on around the siudes and waterline, I always do, but I'll put even more on this time, thanks for the tip!