[C320-list] 2 coats of VC17.

[Jerry Brown]

Marek

I barrier coated from new.  it may have been overkill but it made me feel 
better.  I then applied 3 coats of VC17. I found that it paid to wait 
overnight between coats despite the quick dry nature of VC 17.  I suspect 
VC17 stays a bit soft when first applied but that assumption has no 
scientific basis.  The other possible point is the type of roller material. 
I now put on a new coat of VC17 each season and a double coat where the 
barrier coat can be seen, such as the leading edge of the wing keel.  These 
days I use a foam roller which is not impacted by the VC 17 solvent (I am 
not sure what the foam actually is).  A local chandler sells the foam roller 
specifically for applying VC 17.  The foam seems to have less of a 
"stripping" effect than other roller materials but it has to be replenished 
frequently as it holds little VC 17 compared to a regular foam roller.  With 
the VC17 specific roller I can get two coats on effectively with about a 2 
hour gap between coats.

Jerry Brown
Indigo #1137

-----Original Message----- 
From: Marek Fluder
Sent: Monday, April 27, 2015 11:24 AM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] 2 coats of VC17.

Thanks Scott.
I am not sure if you are familiar with VC17 but it dries very quickly and
has overcoat time of 10 mins.
I decided not to do a barrier coat as it is a bit of PITA and not required.
Marek#1028


On Mon, Apr 27, 2015 at 10:32 AM, Scott Westwood <
scottwestwood at bellsouth.net> wrote:

> You will likely get several versions but for me:
> I put a barrier coat(s) on first.  Then I put a different color ablative
> on next.  (If I want final blue bottom I put red on as first coat.)  While
> tacky (Not fresh but not days hard either) I put on the final color of
> ablative.
> It's been a while but most cans (read can's instructions) will say
> something like wait 2-4 hours or so or maximum X hours between coats
> etc....  I think it's like 4-8 hours?  Probably depends on humidity 
> etc....
> The reason for the red coat first is to give you a warning when you are
> getting to the bottom layer.  If all the colors were the same you won't
> know you need bottom paint until you see gelcoat.  If you see red then you
> know you are on the last layer and it's definitely time to pull her and
> recoat.
> 2 cents
>  Scott Westwood scottwestwood at bellsouth.net
> H (919)-362-8538C (919)-618-7185
>       From: Marek Fluder <marekf at gmail.com>
>  To: "C320-List at Catalina320.com" <C320-list at catalina320.com>
>  Sent: Monday, April 27, 2015 10:20 AM
>  Subject: [C320-list] 2 coats of VC17.
>
> The specs are calling for at least 2 coats when stripped to bare
> fiberglass.
> First one came out nicely rolled on with 4" foam roller.
> When I started the second coat I've noticed the first one gets dissolved
> and white fiberglass is showing.
> This brought the memories when I've done the same on my previous C&C24 -
> back then I managed to do the second coat, but it was a struggle.
> I am thinking of leaving only 1 coat on as it looks good.
>
> Has anyone put on 2 consecutive coats and what was the experience?
>
> Marek
> #1028
>
>
>
>