Product Properties
- iscosity: ~64 cps (DV-E Spindle #1 – average reference value)
- Gel Time: 14–18 minutes
(2% MEKP catalyst) Weight per Gallon: 8.54 lb/gal - Solid Content: 52% (by weight)
- HAPs Content: 34% (by weight)
- Cure System: Air-cure (no wax required)
- Recommended Blends:
50/50 Additive : Gelcoat → best for repairs, fastest finish, highest gloss
25/75 Additive : Gelcoat → optimises colour hide, recommended for dark pigmented gelcoats
10–25% Additive → upgrade tooling gelcoat for improved flow and finish
- Film Build:
Repairs: 8–15 mils
Resurfacing: 18+ mils (5–7 mils per pass)
Key Features
Air-Cure Performance – No Wax or PVA Required
Converts gelcoat to an air-cure system, eliminating the need for wax additives or PVA barriers.
Eliminates Low-Gloss Repair Rings
Removes the typical dull “donut” effect around patch repairs, providing consistent gloss across the entire surface.
Superior Surface Profile
Produces a flatter, smoother finish than standard gelcoat or gelcoat modified with wax/styrene.
Reduces Porosity in Tooling Gelcoat
Promotes improved air release, minimising pinholes and enhancing overall surface quality.
Fast, Hard Cure
Creates a glossy, porcelain-hard surface that sands and polishes easily for rapid turnaround.
Improves Flow & Spray Characteristics
Allows gelcoat to spray like paint, reducing orange peel and improving overall finish uniformity.
Versatile Blend Ratios
Suitable for in-mold coating, wet-on-wet over polyester gelcoat, or as a topcoat over cured laminates.Can be used at multiple blend levels (25–50%) depending on opacity requirements and application type.
Why Choose Duratec® Clear Coatings?
Superior Optical Clarity
Formulated to deliver true clarity and high-gloss finishes with minimal colour shift or haze, ensuring premium visual presentation.
High Build & Excellent Sanding Characteristics
Rapid-build coatings that can be sanded and polished to a flawless, ultra-smooth surface ideal for moulding or finishing workflows.
Exceptional Surface Wetting & Penetration
Deep substrate wetting improves adhesion, reduces porosity, and enhances the performance of subsequent finishing layers.
Fast Cure for Efficient Production
Rapid gelling and quick sanding times help fabricators accelerate plug and pattern preparation while maintaining surface accuracy.
Versatile Compatibility
Compatible with polyester, vinyl ester and most epoxy systems, depending on product selection—supporting a broad range of manufacturing processes.
Durable Performance in Demanding Environments
High thermal stability and strong mechanical properties deliver long-lasting surface integrity for industrial and marine applications.
Performance You Can Trust
ATL Composites stocks a comprehensive range of Duratec coating systems and support materials, backed by technical expertise and industry-leading application knowledge. Our team can assist with product selection, processing recommendations and integration into marine, industrial or composite manufacturing workflows.
Applications
Duratec® Clear Hi-Gloss Additive is ideal for:
Gelcoat Repairs
Producing invisible, high-gloss repairs with no halo, low-gloss edges or porosity issues.Complete Gelcoat Resurfacing
Restoring aged or weathered surfaces to a durable, glossy, like-new condition.Plug & Pattern Manufacturing
Creating high-gloss plug surfaces with reduced porosity and improved sanding/polishing performance.Tooling Gelcoat Enhancement
Improving flow, reducing orange peel and enhancing gloss on mould surfaces.Below Waterline & Above Waterline Marine Repairs
When paired with correct gelcoat build strategy, ideal for marine hulls and components.Industrial Composite Components
Enhancing finish quality for automotive, RV, architectural, aerospace and general composite parts.Restoring Mould Surfaces
When blended with tooling gelcoat, rejuvenates worn moulds to a smooth, high-gloss finish.
