Field of Use
  • Thinning Epifanes one-component varnishes, paints and primers

  • Enhancing flow and levelling during brush or roller application

  • Cleaning brushes, rollers and application tools after use

  • Suitable for marine, household and general timber finishing

Specifications
  • Type: High-purity solvent thinner

  • Use: Brushing or rolling one-component coatings

  • Purity: Double-distilled formulation for maximum clarity

Product Features

Field of Use
  • Thinning Epifanes Polyurethane Yacht Coatings during brushing or rolling

  • Enhancing flow and surface levelling in demanding application conditions

  • Reducing brush marks and improving overall finish quality

  • Use as a slow thinner for PP Varnish Extra when extended wet-edge time is needed

  • Tool cleaning after application of polyurethane coatings

Product Features

Field of Use
  • Thinning Epifanes PP Varnish Extra during brush or spray application

  • Decreasing teak and other oily hardwoods prior to coating

  • Cleaning tools and equipment used with PP Varnish Extra

  • Surface preparation for marine and exterior timber finishing

Product Features

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.

Removes the typical dull “donut” effect around patch repairs, providing consistent gloss across the entire surface.

Produces a flatter, smoother finish than standard gelcoat or gelcoat modified with wax/styrene.

Promotes improved air release, minimising pinholes and enhancing overall surface quality.

Creates a glossy, porcelain-hard surface that sands and polishes easily for rapid turnaround.

Allows gelcoat to spray like paint, reducing orange peel and improving overall finish uniformity.

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.

Rapid-build coatings that can be sanded and polished to a flawless, ultra-smooth surface ideal for moulding or finishing workflows.

Deep substrate wetting improves adhesion, reduces porosity, and enhances the performance of subsequent finishing layers.

Rapid gelling and quick sanding times help fabricators accelerate plug and pattern preparation while maintaining surface accuracy.

Compatible with polyester, vinyl ester and most epoxy systems, depending on product selection—supporting a broad range of manufacturing processes.

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.

DS 904-001 Clear Hi-Gloss Additive
Product Properties
  • Viscosity: 540–800 cps (Brookfield RVF, 20 rpm)
  • Thixotropic Index: Minimum 3.0
  • Gel Time: 15–18 minutes (100 g mass, 2% MEKP)
  • Weight per Gallon: ~8.84 lb/gal
  • Coverage: ~80 sq ft per gallon at 20 mil thickness
  • Colour: Clear (slight natural hue in container)
  • Shelf Life: 6 months (unopened, stored correctly)
  • Recommended Film Build:
    • 12 mils typical for UV protection

    • Up to 22 mils possible for heavy post-sanding or high-gloss finishing

  • Application Methods: Spray (HVLP recommended), brush or roller for wood applications

Key Features

Outstanding UV Resistance

Resists yellowing and degradation under sunlight—no urethane clear coat required.

Polishes to a deep, reflective gloss ideal for carbon fibre, FRP and premium surface finishes.

Sprays smoothly, levels well, and sands/polishes easily for professional results.

Ready to use with simple MEKP catalysis; cures without wax, delivering reliable consistency.

Highly cross-linked polymer network ensures strong resistance to solvents and environmental exposure.

Provides excellent impact resistance and flexibility, supporting use on rigid and semi-flexible substrates.

Suitable for in-mold coating, wet-on-wet over polyester gelcoat, or as a topcoat over cured laminates.

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.

Rapid-build coatings that can be sanded and polished to a flawless, ultra-smooth surface ideal for moulding or finishing workflows.

Deep substrate wetting improves adhesion, reduces porosity, and enhances the performance of subsequent finishing layers.

Rapid gelling and quick sanding times help fabricators accelerate plug and pattern preparation while maintaining surface accuracy.

Compatible with polyester, vinyl ester and most epoxy systems, depending on product selection—supporting a broad range of manufacturing processes.

High thermal stability and strong mechanical properties deliver long-lasting surface integrity for industrial and marine applications.

Performance You Can Trust

Applications

Duratec® Clear SunShield 904-061 is ideal for:

  • Exterior carbon fibre components requiring UV stability and a high-gloss finish

  • Exterior fiberglass (FRP) parts across marine, industrial and automotive sectors

  • Marine surfaces above the waterline, including topsides, deck accessories and composite structures

  • Outdoor timber and furniture, providing a durable, UV-resistant clear finish

  • High-gloss protective topcoat for polyester laminates, gelcoat and vinyl ester surfaces

  • Wet-on-wet application over unwaxed polyester gelcoat for a protective UV sealing layer

  • In-mold coating for parts requiring a premium surface finish directly from the mold

  • Restoration or refinishing of composite or carbon fibre parts exposed to sunlight

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.

DS 904-061 Clear Sunshield Topcoat
Product Properties
  • Viscosity: ~80 cps (Brookfield RVF, 20 rpm)
  • Gel Time: 10–14 minutes (100 g sample, 2% MEKP)
  • Weight per Gallon: 8.28 lb/gal
  • Penetration: Deep wetting and absorption into porous surfaces
  • Topcoat Window:
  • 1–2 hours for polyester, urethane, vinyl ester

  • ≥8 hours cure + sanding for epoxy systems

  • HDT: 180°F (82°C)
  • Colour:  Clear

Key Features

Deep Surface Penetration

Ultra-low viscosity ensures thorough saturation of porous substrates, delivering a more complete and consistent seal.

Surfaces are ready for topcoating in 1–2 hours—often faster—improving throughput and reducing downtime.

Can be sprayed, brushed or rolled to suit any workshop process or project size.

Provides strong adhesion for lacquers, urethanes, polyester coatings, vinyl esters and most epoxy systems.

Creates a smooth, sealed foundation that enhances the performance of subsequent primers and topcoats.

Offers an HDT of 82°C (180°F), supporting higher processing temperatures.

Why Choose Duratec® Primers?

Exceptional Surface Quality

Formulated to eliminate pinholes, porosity and print-through, Duratec primers build rapidly to deliver a fair, high-density surface ready for sanding and finishing.

High-solids, easy-to-sand formulations reduce labour time while delivering consistent results—ideal for commercial production environments.

Originally developed for high-performance marine applications, Duratec primers now support a wide range of industries requiring accuracy, stability, and long-term durability.

Suitable for polyester, vinyl ester, epoxy laminates, FRP moulds, plug construction, composite tooling, and repair substrates.

Performance You Can Trust

Applications

Duratec® Crystal Clear Sealer is ideal for:

  • Sealing porous or absorbent substrates such as wood, foam, fillers, MDF, model-making materials and composites

  • Enhancing adhesion for polyester, vinyl ester, urethane and lacquer systems

  • Preparing surfaces for epoxy coatings, especially when mechanical adhesion is required

  • Plug, pattern and model construction where surface uniformity and coating performance are essential

  • Repair and refinishing work on composite structures requiring a stable, sealed base

  • Improving surface quality before applying high-build primers and topcoats

  • Industrial and marine components requiring fast turnaround and consistent sealing performance

ATL Composites stocks a comprehensive range of Duratec primers 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.

DS 823 Crystal Clear Sealer
Product Properties
  • Viscosity: 1700–2100 cps (Brookfield RVF, Spindle #2, 20 rpm)
  • Thixotropic Index: Minimum 5
  • Gel Time: 18–23 minutes (100 g sample, 2% MEKP)
  • Weight per Gallon: 7.66 lb/gal
  • Coverage: 80 sq ft per gallon at 20 mil thickness
  • Recommended Build: 1–3 mm (40–120 mils) wet-on-wet application
  • HDT (Heat Distortion Temperature): 200°F (93°C)
  • Colour: Brown

Key Features

Rapid High-Build Application

Builds 1–3 mm (40–120 mils) wet-on-wet with minimal sag, enabling fast establishment of surface contour and fairing profiles.

Can be sprayed, brushed or rolled—ideal for workshops without spray facilities or where small areas require hand application.

Shapes cleanly using a knife, file, rasp or sandpaper, accelerating fairing and modelling tasks.

Air cures to an easily sandable surface, reducing turnaround time and improving production efficiency.

Provides an excellent base for surfacing primers and topcoats, reducing the risk of porosity or pinholes.

93°C (200°F) HDT helps prevent print-through, distortion or movement during post-cure or elevated-temperature processes.

Performs exceptionally on composites, MDF, GRP, wood, foam, plaster and clay.

Why Choose Duratec® Primers?

Exceptional Surface Quality

Formulated to eliminate pinholes, porosity and print-through, Duratec primers build rapidly to deliver a fair, high-density surface ready for sanding and finishing.

High-solids, easy-to-sand formulations reduce labour time while delivering consistent results—ideal for commercial production environments.

Originally developed for high-performance marine applications, Duratec primers now support a wide range of industries requiring accuracy, stability, and long-term durability.

Suitable for polyester, vinyl ester, epoxy laminates, FRP moulds, plug construction, composite tooling, and repair substrates.

Performance You Can Trust

Applications

Duratec® Tan Base Primer is ideal for:

  • Fairing and shaping composite plugs and patterns

  • Building surface contour on models prior to surfacing primers

  • Shaping and profiling foam, wood, MDF, GRP, plaster or clay

  • Creating stable base layers for polyester surfacing primers or topcoats

  • Automotive, marine, industrial and architectural prototyping

  • Plug construction for large tooling projects

  • Hand or CNC shaping where easy cutting and sanding are required

  • Correcting surface irregularities before final finishing

ATL Composites stocks a comprehensive range of Duratec primers 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.

DS 707-051 Base Primer
Product Properties
  • Viscosity: 700–1000 cps (Brookfield RVF, Spindle #5, 2.5 rpm)
  • Thixotropic Index: 4
  • Gel Time: 11–19 minutes (100 g sample, 2% MEKP – Norox 925H)
  • Weight per Gallon: 8.7 lb/gal
  • Coverage: ~80 sq ft per gallon at 20 mil thickness
  • Colour: Black 
  • Shelf Life: 6 months (unopened, stored correctly)
  • Recommended Film Build: 18+ mils (applied in 4–5 mil passes with adequate outgassing)
  • Application Method: HVLP spray recommended

Key Features

Brilliant High-Gloss Finish

Transfers exceptional gloss to tooling gelcoat, reducing or eliminating sanding and buffing for molds and patterns.

Withstands temperatures up to 150°C (300°F), ideal for high-temperature tooling and interior applications.

Sprays smoothly through HVLP equipment with excellent flow and leveling.

Special additives improve wetting, reduce porosity, and help prevent fisheyes, pinholes and surface imperfections.

Cures to a non-wax, tack-free, high-gloss surface with minimal orange peel and excellent durability.

Designed for both direct in-mold coating and post-laminate topcoating applications.

Why Choose Duratec® Clear Coatings?

Porcelain-Hard, High-Gloss Finish

Achieve a flawless, mirror-like surface without waxes or PVA — ideal for plug and mould production.

Rapid cure times and excellent sandability reduce labour, accelerate turnaround and improve workflow consistency.

Easily refurbish worn or low-gloss moulds, eliminate print-through and deliver a uniform final finish.

Advanced chemistry ensures reliable curing and gloss retention without additional sealing products.

Works seamlessly with polyester, vinyl ester and epoxy tooling systems, making it versatile for mixed-production environments.

High-build capability and strong filling properties allow quick repair of scratches, pinholes and surface defects.

With 40+ years of field use, Duratec® has become the benchmark finishing system for marine, automotive, defence, aerospace and industrial tooling.

Applications

Duratec® Vinyl Ester Hi-Gloss Topcoat is ideal for:

  • Plug & Pattern Topcoating
    Producing high-gloss, print-free surfaces ready for mold construction.

  • Mold Resurfacing & Restoration
    Restoring worn tooling surfaces to smooth, durable, high-gloss condition.

  • In-Mold Coating
    Applying directly inside molds to achieve a polished finish from the tool.

  • High-Temperature Interior Components
    Suitable for composite parts used above 200°F (93°C) due to high HDT.

  • Tooling & Composite Fabrication
    Creating low-porosity, defect-resistant surfaces for tooling applications.

  • Industrial & Composite Coatings
    Where a durable, high-gloss, hard surface is required.

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.

DS 1902-045 Black VE Topcoat
Product Properties
  • Viscosity: 1900–2500 cps (Brookfield RVF, Spindle #2, 20 rpm)
  • Thixotropic Index: 6.5 
  • Gel Time: 22 minutes ± 2 minutes (100 g sample, 2% MEKP)
  • Weight per Gallon: 11.8 lb/gal
  • Coverage: 80 sq ft per gallon at 20 mil thickness
  • Maximum Recommended Film Build: Up to 40 mils
  • Colour: Grey 

Key Features

Exceptional Sandability

Formulated for extremely easy sanding, enabling faster progression to a smooth, polishable surface with minimal labour.

Produces a dense, uniform surface that reduces pinholes, porosity and preparation time before topcoating.

Builds up to 40 mils, allowing efficient elimination of surface defects, waviness and tool-path marks.

Sprays smoothly from HVLP guns with excellent flow and atomisation, reducing overspray and defects.

Minimises sandpaper use and sanding hours, reducing overall finishing costs and improving throughput.

Bonds to epoxy laminates, polyester and vinyl ester fiberglass, MDF, tooling board, plaster, clay, and other non-metal surfaces.

Heat distortion temperature of 180°F (83°C), suitable for tooling and pattern work exposed to elevated processing temperatures.

Why Choose Duratec® Primers?

Exceptional Surface Quality

Formulated to eliminate pinholes, porosity and print-through, Duratec primers build rapidly to deliver a fair, high-density surface ready for sanding and finishing.

High-solids, easy-to-sand formulations reduce labour time while delivering consistent results—ideal for commercial production environments.

Originally developed for high-performance marine applications, Duratec primers now support a wide range of industries requiring accuracy, stability, and long-term durability.

Suitable for polyester, vinyl ester, epoxy laminates, FRP moulds, plug construction, composite tooling, and repair substrates.

Performance You Can Trust

Applications

Duratec® Grey EZ Sanding Primer is ideal for a wide range of plug, pattern and composite surfacing requirements, including:

  • Surfacing composite plugs and patterns prior to mould construction

  • Tooling board finishing, including polyurethane and epoxy tooling boards

  • MDF, plaster, clay and model-building substrates requiring a smooth, polishable coating

  • FRP laminates made with polyester, vinyl ester or epoxy resins

  • Fairing and refining surface profiles before high-build coating or topcoat application

  • Eliminating porosity, tool-path marking and surface waviness on milled surfaces

  • Preparing parts for high-gloss polishing or paint systems in marine, automotive and industrial composites

  • Rapid surface correction where quick build and easy sanding are essential

ATL Composites stocks a comprehensive range of Duratec primers 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.

DS 707-061 Grey EZ Sanding Primer
Product Properties
  • Gel Time: 10–15 minutes (at 2% MEKP, ambient ≥ 64°F / 18°C)
  • Mix Ratio: 2% MEKP by weight (approx. 20 cc per quart)
  • Application Thickness: Minimum 10 mil total build (4–5 mils per pass, crosshatch technique)
  • Sanding Time: After full cure; typically 2–4 hours depending on temperature
  • Polishing / Topcoat Window: Minimum 8 hours after start of sanding
  • Colour Options: White

Key Features

Exceptional Surface Quality

Rapid film build allows users to achieve a smooth, defect-free surface with fewer passes.

Sands cleanly with minimal clogging, enabling fast progression to fine grits and final polishing.

Effectively fills surface profile, pinholes and minor imperfections to achieve a uniform finish.

Maintains surface accuracy during cure and post-cure, ideal for plug and mould construction.

Can be sprayed with HVLP or gelcoat systems and used both in-mould or on finished substrates.

Bonds reliably to composite tooling, patterns, FRP laminates and matched Duratec surfacing products.

Why Choose Duratec® Primers?

Exceptional Surface Quality

Formulated to eliminate pinholes, porosity and print-through, Duratec primers build rapidly to deliver a fair, high-density surface ready for sanding and finishing.

High-solids, easy-to-sand formulations reduce labour time while delivering consistent results—ideal for commercial production environments.

Originally developed for high-performance marine applications, Duratec primers now support a wide range of industries requiring accuracy, stability, and long-term durability.

Suitable for polyester, vinyl ester, epoxy laminates, FRP moulds, plug construction, composite tooling, and repair substrates.

Applications

  • Plug and pattern surfacing

  • Composite mould preparation

  • Surface filling and profile correction

  • Fairing of tooling, FRP components and composite assemblies

  • High-gloss topcoat preparation for marine, industrial and automotive parts

  • In-mould surfacing when a smooth, polishable finish is required

Performance You Can Trust

ATL Composites stocks a comprehensive range of Duratec primers 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.

DS 714-002 White Surface Primer
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