Product Spotlight: Duratec High Gloss Additive

123754-lrgAt Fiberglass Coatings, we have all the tools, materials and knowledge to help you with your job, whether it being a large commercial job, or just doing a project around the house. With that in mind, we are spotlighting a product we have had around for a long time, but not everyone knows about; Duratec High Gloss Additive.

This gelcoat additive is useful for several different reasons. The first is that adding this as a 50/50 mixture will not only produce a high-gloss, paint-like finish, but it will also thin the gelcoat without adding a yellow tint, like Styrene can do. This is why we recommend this product for thinning while spraying. When adding this additive, you do not need to add Sanding Aid, as this would be the final coat. The only difference is that you will want to wait a full 24 hours before buffing to ensure the gelcoat has fully cured.

Another benefit of this product is eliminating porosity in tooling gelcoat. When you add this product as a 25% mixture, not only will it add an extra gloss to your tooling gelcoat, it will eliminate the porous surface by over 20 percent, allowing the surface to be waxed easier, and your part to pulled with less effort.

Check out the Tech Data Sheet HERE.

If you have any questions, be sure to contact us and we will be happy to help!

Tech Blog – 5 tips on Thinning Gelcoat

maxresdefaultWhen it comes to applying gelcoat, you really only have two kinds of methods; you can brush our brushable gelcoat, or you can use our standard gelcoat and spray it. Most go with spraying the gelcoat to give you the best finish. When spraying gelcoat, you will need a spray gun with a 3.0 tip or larger. If you don’t have a tip that large, most people generally thin the gelcoat. Everyone asks what you use to thin gelcoat, and everyone has an answer. Let me start by saying we don’t recommend thinning gelcoat if you can avoid it. Our techs liken it to chicken soup; the more water you add to it, the less like chicken soup it will be.

  1. Do NOT use Acetone. I have heard people recommend this, but it can cause all kinds of problems for gelcoat from running to fish-eyes to a yellowing of the colors.
  2. We recommend Patch Booster. Patch booster is an additive that will thin out your gelcoat while preventing running. The product will not affect colors like styrene or acetone and is added up to 25 percent by volume to your gelcoat (one quart per gallon). You will want to catalyze the gelcoat at 2% when you add this additive.
  3. We also recommend Duratec High-Gloss additive. This product has the added benefit of giving you a glossy shine without having to sand and buff at the end. The product also thins the gelcoat and will not affect the colors like styrene and acetone will. It can be used up to 50 percent by volume. If there is one tip we could offer, it would be to wait 24 hours before buffing when using this product. Buffing will give you a new-car shine. You will want to make sure you catalyze this product at 2%.
  4. We do not recommend Styrene for one main reason; it can affect colors. Styrene, when added up to 20% will thin your gelcoat but does often cause the gelcoat to yellow and any more than 20 percent will cause fish-eye.
  5. Both the Patch Booster and the Duratec affect your catalyst rate, so make sure you catalize properly before spraying and be sure to clean your gun carefully after each use (for that, you CAN use Acetone).