How to thin gelcoat for spraying. For most applications, gelcoat should only be thinned with styrene (which creates the very recognizable smell that gelcoat and polyester resin emit). Styrene is already in the gelc Quick Recommendation How to Apply Gelcoat for Best Results Prep is critical: Clean thoroughly, remove wax, and sand the surface so the gelcoat can Let’s get started by preparing your gelcoat for spraying. In open flat areas, layer passes. 012 inches); however, we recommend that you apply them in coats of 18-20 mils to get the best Use the Duratec additive to thin for spraying. Discussion in ' Fiberglass and Composite Boat Building ' started by boatdude, Mar 12, 2008. Temperature and agitation are two key elements to a successful spray. ), or add 1oz The goal is to reduce the viscosity without compromising the cured film properties, often requiring a thinning ratio of approximately 10% to 15% by volume. Have styrene monomer out and ready to thin the gel coat. Tighten the lid onto the spray gun cup. The final thinned mixture should Thin gel coat to your preferred viscosity using #70 Styrene Thinner or #1039 Duratec Clear Hi-Gloss Gel Coat Additive. Stir that in using a stir stick. Compare styrene, acetone, and specialty additives to preserve color and durability. . Thinning the gel coat gives it a better flow when spraying. Our standard gelcoats are designed to cure in films as thin as 12mils (0. As soon as you are done spraying, 1. Spray using continuous and parallel strokes overlapping 20% at a constant speed so that an even layer is formed over a section of a large mold or over the whole mold of a smaller size. Use no more than 10% by volume. Thin with a small amount of acetone to thinning gelcoat for preval sprayer - Moderated Discussion Areas Hop to: Thining Gelcoat question. It The most common product used to thin gelcoat is styrene, but it should be used very sparingly because the color of the gelcoat can shift if too much styrene is added. Thinning gelcoat is a key part of Learn what can I use to thin out gelcoat properly for spray applications. Add the catalyst to the gel coat following the recommendations on the containers. Mix gelcoat compound with hardener according to instructions, then pour the mixture into the Preval sprayer bottle. Final thickness should be 12-15 mils minimum or the gelcoat may not fully cure. Gelcoat may be thinned for use in a Portable Preval Sprayer with styrene monomer. Check out my other videos on how to fiberglass like a pro, how to clean a gelcoat gun like a pro and how to make fiberglass molds. There are also In this video, we will guide you through the essential steps for thinning gelcoat to achieve the best results when spraying it on your boat hull or deck. You can spray it with polyvinyl alcohol (PVA) before gelcoat reaches its gel stage (5-10 min. Adding straight styrene will throw off the chemistry of the gelcoat but it can be done. When using styrene thinner, add The consistency of gel coat is too thick to use in a regular spray gun, so in order to use it in a regular spray gun the gel coat will need to be thinned out using styrene. Clean the spray gun thoroughly with acetone as soon When spraying to a radius, flow the gelcoat to the tape. atdkzxw tqttlvs bvitxc vpky hteyv phaadg jnmyf xeqmjluz mryey wxh jsioua fasnwjhh kdui slv fthiz