The red is the first layer of polyester resin. I believe it is tinted on purpose to help the builder see whether there is thorough coverage over the gelcoat. Presumably they use a different color tint when spraying over red gelcoat. Based on your photos, you do not need new gelcoat but you should apply an epoxy barrier coat. I have had good results with the Petit product. I don't know if this is still true, but it used to be the Petit product was thicker and required fewer coats than the Interlux product. -----Original Message----- From: montgomery_boats <montgomery_boats-bounces@mailman.xmission.com> On Behalf Of Gerry Lempicki via montgomery_boats Sent: Thursday, April 25, 2019 6:47 PM To: Dave Scobie <scoobscobie@gmail.com> Cc: For and about Montgomery Sailboats <montgomery_boats@mailman.xmission.com> Subject: Re: M_Boats: Gelcoat; great info! If I had to guess I'd say there is both a red and a white gelcoat. Here's a photo from today when all the paint has been removed. Maybe a red gelcoat under the white? The red stripe is definitely not paint. And if I sand through the white gelcoat below the waterline, I hit red. -Gerry
On Apr 25, 2019, at 6:29 PM, Dave Scobie <scoobscobie@gmail.com> wrote:
Garry:
is the red her original gel coat color?
is the white being sanded off old bottom paint or a later finish?
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On Thu, Apr 25, 2019 at 2:55 PM Gerry Lempicki via montgomery_boats <montgomery_boats@mailman.xmission.com> wrote: Thanks for the replies! I'm going to try to attach a couple photos. If they come through, one is the underside of the lapstrakes, a few areas with lots of little holes (bubbles when applied?) And a flat area with similar sized spots. Fill the holes with my epoxy fairing? Then prime over it all?
-Gerry