5 Tips on how to use Brushable Gelcoat

Brushable gel

Brushable Gelcoat is a specially formulated product that is made to be applied like paint and eliminate the need for spray equipment. It has excellent leveling, Water/Osmosis resistance, UV light Stability, great Gloss Retention and a fantastic long-term durability. It comes in many different colors and can be bought online or in our stores! So, let’s talk about some tips on how to get the most out of the Brushable Gelcoat.

  1. Don’t add Patch Booster or Sanding Aid! You heard that right, you don’t need to add sanding aid to Brushable gelcoat to have it dry tack free! The self-leveling technology added doesn’t require any additional products or additives.
  2. Proper gelcoat application requires you apply your coats about 15-20 mils thick,
    Mil Gauge

    using a mil gauge.

  3. Allow the gelcoat to cure overnight and then lightly sand it and buff it for an outstanding shine!
  4. Use Acetone for your cleanup. Just like other Polyester-based products, Acetone is the best cleanup material!
  5. The most important step: Adding the proper amount of Catalyst. We recommend 1.5%-2% Catalyst ratio. After adding the catalyst, you will want to mix for two minutes, preferably with a mechanical agitator (drill mixer). For your reference, here is the catalyst chart so you know exactly how much catalyst you need.

BONUS TIP: In the hot Florida weather, working time is tough for any gelcoat. So our FGCI Pro Tip is to chill the gelcoat down to 70 degrees before mixing. This way you can get a bit longer working time.


DID YOU KNOW: That FGCI Colormatches gelcoat? We can make as little as a gallon to nearly any sample you have. Call us for details!

  1. catalyst-chart-copy

4 thoughts on “5 Tips on how to use Brushable Gelcoat

  1. Paul haney June 27, 2018 / 6:41 pm

    I am repainting a fiberglass canoe. I am considering gelcoat instead. Will gelcoat bs the better option?

    • FGCI June 27, 2018 / 8:55 pm

      Gelcoat is a nice durable, industrial grade coating that generally seems easier to patch and repair. However, if not applied evenly thick or thin throughout the coat, it can require additional labor to fix and make all pretty.

  2. Peter Fahey December 10, 2019 / 2:48 pm

    Does your brushable gelcoat contain wax for curing? If not how is it sealed for curing if necessary? Thanks

    • FGCI December 10, 2019 / 3:10 pm

      Our Brushable gelcoat doesn’t contain wax, but it’s paint technology that we engineer into it does prevent air from touching the surface, allowing for a tack-free finish.

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