[C320-list] Bottom Blasting

[John Morrison]

Bottom paints should not be redone every year ‘Cept  if you’re using VC17 , which works great but very poisonous to the environment ! I had bottom of our boat soda blasted 4 years ago, and applied 2 additional coats of Interprotect 2000. The soda blasting is not very aggressive so the initial barrier coating of IP 2000, applied by the PO was left intact. I use Aqua Guard a water based bottom coat, used extensively in CA.  This system has been on the boat 4 four years and I’ve not touched it. 
Applying bottom coat every year just causes the buildup your experiencing for no increase in performance!
JohnM 
1999#574

Sent from my iPhone

> On Jan 13, 2021, at 5:07 PM, Tim <chillinonahd at yahoo.com> wrote:
> 
> My yard is bringing a company to do a bunch of boats, what experience/advice is out there on this process?
> Quoting the following;Bottom Blasting - 13502 coats of barrier paint - 750
> Do I need the barrier paint?Is one blasting material preferred over another?Thouhts? Questions to ask?
> Tim -Calypso #603
> My yard paints bottom annually, I try to sand off as much as I can before but it's building up, also have some spots where the paint is just not sticking anymore and chips right off.
> I used to race, may go back post-covid so a smooth bottom is in order.
> Thx.