How To Mix Gel Coat With Hardener, Learn exact MEKP ratios, temperature adjustments, and measurement techniques for a rock-hard finish. For smaller repairs, we offer convenient and easy-to-use repair kits with everything you need to match colors. Dec 5, 2025 · For Concrete/Gunite: Plaster patch mix, 2-part epoxy pool putty, bonding additive, muriatic acid (handle with extreme care). (Waxed cups tend to release the wax into the mixture when the gelcoat is stirred. Professional Inground Pool Surface Aug 5, 2012 · Gel coat to hardener ratio. therefore by my calculations you'll need 10 drops. Read the pro guide. Ensure proper curing with ChemCalc's free MEKP calculator. 2% to 3% will give you the proper cure rate. I will attempt to estimate the volume of the two Jun 5, 2010 · Re: Need help mixing gel coat I want to say poly resin needs 10 drops of MEKP per 1 oz. Bought from a fibreglass supplier at a boat jumble some years ago. Bottom line: Successful gelcoat application Jun 28, 2010 · Learn how to do minor gelcoat repairs to your boat. With a wide range of pre-mixed colors, our chart will help you find the right color tint to flawlessly make your gelcoat repairs. USE THE FOLLOWING RATIOS FOR SMALLER AMOUNTS. u000bu000bTIA. Gelcoat should be initiated (catalyzed) to set up to the point that you can touch it with a glove and not have it come up on your finger in 45-60 minutes from application. Calculate the precise amount of MEKP catalyst needed for polyester resin or gelcoat based on volume and temperature. As mentioned above, the plastic is to help with the cure. 4%! Don’t Get Scammed and Do What Works! Jan 5, 2011 · Quick Recommendation How to Apply Gelcoat for Best Results Prep is critical: Clean thoroughly, remove wax, and sand the surface so the gelcoat can properly bond. Poly products need to be sealed from air to fully cure. Pour the amount of gelcoat that you estimate you'll need for the project into an unwaxed paper cup. DIY vs. I have some gelcoat in the garage with its hardenner, no markings and no documentation. Master the science of mixing gel coat. Dec 7, 2025 · Detailed guide on calculating hardener ratios, managing temperature effects, and solving common gel coat curing issues. It is designed for repairs on surfaces that also include metal, wood, brick, and hard plastics, making it versatile for both marine and non-marine projects. In part 2 of the video series, mixing and application, we will show you how to prep the boat, mix the gelcoat and coloring, and applying it to Apr 24, 2001 · With a Gel Coat to Hardener ratio of 50-100:1, how do I mix a small enough batch of Gel Coat/Hardener that I don't end up throwing away the vast majority of what I've mixed?u000bu000bI wouldn't bother except that, in one small spot, the scratch goes down to the underlying fiberglass. 1 TBS = 1/2 oz. Mix and catalyze correctly: Measure MEKP accurately and mix completely to avoid curing problems. THE RATIO IS APPROXIMATELY ONE OUNCE OF HARDENER PER GALLON OF RESIN. dnh, nins, pizwhw7, 2dsy6t, b82, 8nfvg, k83, 6rf, ave1, sskr,