Steel Keels and Antifoul

[Quandary]

Jotun Epoxymastic 87 is tolerant of imperfect rust removal and is half the price of Ferpox. (actually twice the size for the same price) It is repackaged in small tins and sold at very much higher prices by a lot of specialist rust busting companies servicing classic car enthusiasts, would not surprise me if Ferpox was one of these. There is also a low temperature version for winter application. SML marine coatings do a good mail order service and include lots of technical info with each product.
In the days before epoxies I had good results with Primocon as long as you applied at least 5 coats, but Jotun Vinylester 88 is a better one pack primer and again much better value as long as you buy 5 litres. It keeps well and is a good primer for any outside paintwork so wont be wasted, I just recoated my cradle with it.

 

[Jokani]

Many thanks for all the input, much appreciated.

I now have a plan:

1. Slurry blast £240
2. 2 coats of Fertan - £15
3. 2 coats of Jotamastic 87 W/G (Wintergrade)- £50
4. 2 coats of International VC Offshore EU 2 Litre - £90 ??

This seems best in terms of:

1. Local services available (limited in Lincolnshire)
2. Budget
3. Cost to boat value

Hopefully the slurry blast will be a one off, and future years will just be a paint job.

Now I just need to make a plan for the hull!

 

[Jokani]

Good tip - Malcolm at SML has been extremely helpful

 

[KellysEye]

>>1.Slurry blast £240
2.2 coats of Fertan - £15
3.2 coats of Jotamastic 87 W/G (Wintergrade)- £50
4.2 coats of International VC Offshore EU 2 Litre - £90 ??

No, rust will come back and you will have to pay again to have it done properly. As TQA said grit blast to keep the hull dry then 2 coats of zinc rich epoxy. Do it on day with low humidity and get the first coat on fast to avoid flash rusting. Two people painting one each side is best. Then antifoul.

 

[Birdseye]

Here is a picture of my Westerly Centaur keel and Hull:

View attachment 45814

These barnacles have built up after only 2 months in the water!

Over the winter I am planning on having the keels slurry blasted to get me back to clean steel.

But that is where the plan ends at the moment.

After the keels are clean, what would be the best process epoxy, paint, both? And what would be the best materials?

The hull below the waterline, just clean and anti-foul?

Thanks in advance

After several years of similar problems I scraped back my bilge keels and coated one with epoxy and the other with a chlorinated rubber primer, then antifoul. To my susprise the chlorinated rubber fared much better. But then it is what is used on big ships apparently.