[Public-List] Soda blasting.

[Don Campbell via Public-List]

Greg:
    I have used soda blasting on 528 and it took all of the triple X off 
with no trouble. The way it works is that the explosion of the soda crystal 
removes the product,  so pressure is the controlling factor. It happened to 
be raining when we did the job, but that made for only less dust. It took 
only about 120 lbs. of product, so much less than sand.  I did it at home, 
and there was only about 2" of dead grass on the edge of the gravel 
driveway, so minimal environmental damage. It left the hull so smooth that I 
had to sand it so that the new barrier coat adhered. There were some bubbles 
on the hull and it was relatively easy to see them, so they were opened, 
filled with Interlux Watertite (R) filler epoxy, easily sanded and I used VC 
tar for the barrier coat for fresh water. (No longer made.) I have been told 
that most of the barrier coats have limited life because of environmental 
restrictions and that the newest one is German, and the same one that they 
now use to undercoat cars. Apparently 1 liter is ample but it is $800.00 and 
good for both fresh and salt water.
    I gather you have someone lined up to do it , but often it is the fire 
reclamation people who use soda most frequently to clean up fire damages. If 
they are not busy , they are often a good source of service. Check with your 
insurance company's local adjuster to see who they use.
Don

-----Original Message----- 
From: Greg Dawson via Public-List
Sent: Friday, March 13, 2015 12:36 PM
To: public-list at lists.alberg30.org
Subject: [Public-List] Soda blasting.

Dear all.

Our hull has to be completely cleaned off this year and I am interested in 
the idea of soda blasting. Has anyone had experince with it? Is there 
anything to be aware of, what's the cost like and would it damage a barrier 
coating already in place?
<div>Greg

#348
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