Key Features & Benefits
Vinyl ester resin base
High heat and chemical resistance for long-life tooling
Excellent surface finish
Can be polished to a high-gloss mould surface
Reduced reinforcement print-through fibre print-through
Produces smooth, dimensionally stable mould faces
Good impact resistance
Supports repeated demoulding and long production cycles
Controlled thixotropy
Even brush application with minimal sag or drainage
Matched tooling system
Designed for use with Crestamould backing resins
Applications
Crestamould® Gelcoat 15PA (B) is recommended for:
FRP composite mould manufacture
High-temperature tooling
Chemical-resistant mould surfaces
Tooling requiring polished, high-gloss finishes
Matched Crestamould tooling systems
Mechanical & Thermal Properties (Cured)
(Post cure applied)
Barcol Hardness: ~45
Heat Deflection Temperature (HDT): ~106 °C
Tensile Strength: ~78 MPa
Tensile Modulus: ~3900 MPa
Elongation at Break: ~2.7 %
- Colour: Red
Processing & Handling
Crestamould® Gelcoat 15PA (B) is pre-accelerated and designed for brush application.
Recommended catalyst: 2% Butanox® M-50 or equivalent MEKP
Recommended wet film thickness: 600–800 microns
Application temperature: 15–25 °C
Apply in multiple passes using long, even brush strokes. Backing laminate should be applied once the gelcoat reaches the appropriate degree of cure, typically within 24 hours.
Post curing is strongly recommended to maximise mould life and thermal performance. Where oven curing is not possible, extended warm-condition curing should be used prior to mould service.
Packaging & Storage
Packaging: 25 kg and 225 kg containers
Storage:
Store below 25 °C in original, sealed containers.
Protect from freezing and direct sunlight.
Technical Data Sheet
ATL Technical Support
ATL Composites provides tooling system guidance, cure scheduling advice, and mould-life optimisation support to ensure Crestamould® Gelcoat 15PA (B) delivers consistent, long-term tooling performance.
