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.
Versatile Application Methods
Can be sprayed, brushed or rolled—ideal for workshops without spray facilities or where small areas require hand application.
Quick Shaping & Easy Workability
Shapes cleanly using a knife, file, rasp or sandpaper, accelerating fairing and modelling tasks.
Fast Air Cure
Air cures to an easily sandable surface, reducing turnaround time and improving production efficiency.
Low-Porosity, Stable Surface
Provides an excellent base for surfacing primers and topcoats, reducing the risk of porosity or pinholes.
High Thermal Stability
93°C (200°F) HDT helps prevent print-through, distortion or movement during post-cure or elevated-temperature processes.
Suitable for a Wide Range of Substrates
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.
Fast & Efficient Processing
High-solids, easy-to-sand formulations reduce labour time while delivering consistent results—ideal for commercial production environments.
Proven Performance in Demanding Environments
Originally developed for high-performance marine applications, Duratec primers now support a wide range of industries requiring accuracy, stability, and long-term durability.
Compatible with Multiple Substrates
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.
