[alberg30] Re: bottom paint

[Rick Leach]

From: Rick Leach <RLeach at mbayaq.org>

Gordon,

Sandblasting?!?  Unless they have some sort of special blast media designed
for gelcoat: DON'T DO IT!!  Everyone I've asked agreed.  Even with an expert
handling the gun just a momentary lapse of concentration would cause
unnecessary grief.  Nobody likes scraping or orbital sanding, but I think
that it's the safe road to take. There's my two cents...

Rick Leach
Sugar Magnolia, #121 
> ----------
> From: 	Gordon E. White[SMTP:gewhite at crosslink.net]
> Sent: 	Monday, December 07, 1998 1:40 AM
> To: 	alberg30 at onelist.com
> Subject: 	[alberg30] Re: bottom paint
> 
> From: "Gordon E. White" <gewhite at crosslink.net>
> 
> George:
>     When my boat came out of the water and was pressure washed it ended
> up looking very mottled; spots of the old paint came off leaving the
> surface fairly rough what with high spots & low. The yard suggested
> sandblasting off all the old paint to give a smooth surface before
> repainting. They get $15/ft for that.
>     Any ideas? I am not worried about smoothness per se as I do not
> race, but I wonder if there is any 1) danger to the underlying gelcoat
> from sandblasting and 2) do I really gain anything from a
> good-for-the-boat point of view to getting off all the old paint?
>     There are places where the old paint has blisters about quarter-size
> or so. Last time I painted (in 1995) I popped lots of such blisters,
> which are in the paint, not the gelcoat. I can remove them and the
> gelcoat is fine but it leaves a shallow crater in the surface if I do
> not take off all the old paint. Alternatively I could sand these spots
> fairly smooth. Any recommendations?
> 
>                                         - Gordon White A-275
> 
> 
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