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Gelcoat: What It Is, How It’s Used, and How to Repair It Gelcoat is the outermost protective and cosmetic layer used on fiberglass parts. Understanding how gelcoat works — and how to apply or repair it correctly — is critical to achieving long-lasting performance and professional results. What Is Gelcoat? Gelcoat is a pigmented polyester or vinyl ester resin applied to the surface of fiberglass parts. It creates a smooth, high-gloss finish while protecting the underlying laminate from wat...

Polyester vs Vinyl Ester Resin: Understanding the Differences Choosing the correct resin is one of the most important decisions in fiberglass lamination. Polyester and vinyl ester resins are both widely used in open molding, hand lay-up, and spray-up applications, but they offer different performance, durability, and cost characteristics. Understanding how these resin systems differ will help you select the right material for your project, environment, and performance requirements. ...

Boat Restoration Technical Support Guide Last updated: February 2026 Boat restoration is the process of repairing, rebuilding, and refinishing fiberglass boats to restore structural integrity, appearance, and long-term performance. This technical support guide serves as a master reference for understanding materials, repair methods, and best practices used in modern fiberglass boat restoration. This page is designed as a living knowledge base. Each section below will continue ...

Awlgrip Surface Preparation Guide Proper surface preparation is the most important step in any Awlgrip paint system. Different substrates require specific cleaning procedures, sanding profiles, and primer systems to achieve proper adhesion and long-term durability. Shop Awlgrip Full Application Guide Surface Prep → Fairing → Primer → Topcoat → Cure → Finish ...

Awlgrip Yacht Paint Application Guide Complete professional guide to surface preparation, priming, fairing, and applying Awlgrip marine coatings. Built for boat builders, professional painters, and first-time users who want a flawless finish. Guide Contents Overview of Awlgrip Coating Systems Surface Preparation Fundamentals Preparing Fiberglass & Gelcoat Preparing Aluminum Preparing Steel Preparing Wood Fairing Compounds & Surface Correction...

Awlgrip Application Guide › Surface Preparation › Fiberglass Fiberglass Surface Preparation for Awlgrip Paint Before applying Awlgrip primer or topcoat systems, fiberglass and gelcoat surfaces must be properly cleaned, sanded, and prepared. Mold release agents, wax contamination, and oxidation will prevent epoxy primers from bonding correctly. Need help with a project? Call our coatings team: 321-639-3046 Quick Answer: How Do You Prep Fiberglass for Awlgrip?...

Awlgrip Application Guide › Surface Preparation › Previously Painted Surfaces Preparing Previously Painted Surfaces for Awlgrip Many boat refinishing projects involve applying new Awlgrip coatings over existing paint. Proper inspection, cleaning, and sanding determines whether the existing system can be recoated or must be removed. Need help with a project? Call our coatings team: 321-639-3046 Quick Answ...

Awlgrip Application Guide › Surface Preparation › Aluminum Aluminum Surface Preparation for Awlgrip Aluminum substrates require specific cleaning, profiling, and corrosion-protection priming to achieve a yacht-grade Awlgrip finish. Per the official Awlgrip YPAC training, prepped aluminum must be primed within 8 hours to prevent oxide regrowth. Need help with a project? Call our coatings team: 321-639-3046 ...

Steel Surface Preparation Guide Correct surface preparation of steel is critical for long-term coating performance. Removing mill scale, rust, shop primers and contaminants ensures strong adhesion and corrosion protection when applying Awlgrip coating systems. Select Your Steel Surface Scenario Steel (No Fairing Required) Standard steel surfaces where fairing compounds are not required. View System Steel (Fairing Required) ...

Mirka Marine Surface Finishing Systems From heavy sanding to high-gloss finishing — complete systems for fiberglass, gelcoat, and marine coatings. About Mirka Mirka Ltd is a global leader in abrasives technology, delivering complete sanding and polishing systems designed to improve surface quality, efficiency, and profitability. ISO 9001 – Quality Assurance ISO 14001 – Environmental Management OHSAS 18001 – Occupational Safety Perfect Surfac...

  FF · AWLGRIP GUIDE ⌕   EDITION 22 Fiberglass Florida · Florida's Awlgrip Technical Hub Awlgrip Application Guide The complete professional reference for Awlgrip coatings — surface preparation, spray gun setup, primers, topcoats, defect diagnosis, and repair. Adapted for Florida's climate by Fiberglass Florida. Surface Prep Spray Gun Settings Primers Topcoats Paint Defects Maintenance & Repair Florida Climate ...