Removing all layers of antifouling

Don't go on a windy beach then?

Split a grain a sand and you get more smaller grains surely?:eek:
 
Last season I used jet pressure washer to remove years of antifouling; in many areas the hull cleaned down to the grp. If I was to spent a few more hours I am sure I could have removed all old paints, fit for and ready for epoxying.

So, a powerful jet pressure washer will get the hull clean for epoxying, however, the hull would have to be bone dry for epoxying.
 
ianj99 said:
Don't go on a windy beach then?

Split a grain a sand and you get more smaller grains surely?:eek:
Click to expand...

Like asbestos, it's the grain size. 1 of the wrong size in the wrong place is bad news. With sandblasting you are smashing it to bits. Rob2 Slurry blasting is not as dangerous, as you don't get as much dust.
 
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ianj99 said:
Don't go on a windy beach then?

Split a grain a sand and you get more smaller grains surely?:eek:
Click to expand...

if you still don't beleive me this is from a US government publication.

WARNING! Abrasive blasting with sands containing crystalline silica can cause serious or fatal respiratory disease.

The National Institute for Occupational Safety and Health (NIOSH) requests assistance in preventing silicosis and deaths in workers exposed to respirable crystalline silica during sandblasting. Sandblasters, exposed coworkers, and their employers urgently need information about the respiratory hazards associated with sandblasting. Your assistance in this effort will help prevent silicosis and death, a national goal for health promotion and disease prevention stated in Healthy People 2000 [DHHS 1990].

The Alert describes 99 cases of silicosis from exposure to crystalline silica during sandblasting. Of the 99 workers reported, 14 have already died from the disease, and the remaining 85 may die eventually from silicosis or its complications. NIOSH requests that editors of trade journals, safety and health officials, labor unions, and employers bring the recommendations in this Alert to the attention of all workers who are at risk.
 
Ellesar,

Not disbelieving the possible dangers and sandblasting is nowadays only performed in a sealed chamber like a glove box. I accept your advice in good faith about the dangers and would never consider slurry blasting unless clear of other people and wearing a mask, etc. But I would still like to know why you say it is illegal? In my case I had the yard to myself mid-week and would advise others to seek similar safe working conditions. Having my assistant also allowed him to keep a lookout for anyone approaching and he could simply pull the pick-up pipe out of the sand to stop the process.

Rob.
 
I too do not want thick crusty antifoul: I get away with one thin coat of good quality AF each year, with an extra layer at the waterline, and go over it each winter with wet and dry or a mesh on a pole sander plus a hose to smooth it down, not aiming to get it all off. 2004/5 boat still has a pretty smooth hull. The paint makers tell you to use far more AF than is necessary - but they have a vested interest!
 
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