FIBREGLASS & COMPOSITE SYSTEMS

Vinyl Ester Resin Systems

Higher-performance laminating resin with improved chemical resistance — MEKP-catalysed, suits demanding marine and industrial work.

RESIN CALCULATOR

Fibreglass Calculators

Use our fibreglass catalyst ratio calculator, resin quantity calculator, material coverage calculator and roll coverage calculator to estimate laminating materials.

Fibreglass Catalyst Ratio Calculator

Estimate MEKP catalyst required for polyester and vinyl ester resin in weight and volume.

General guidance only. Always follow the resin manufacturer’s Technical Data Sheet and Safety Data Sheet. Resin litre conversions are estimated using an assumed resin density of 1.1 kg/L.

Fibreglass Material Coverage Calculator

Estimate linear metres required from a 1.27 m wide roll, total reinforcement weight and approximate reinforcement volume.

Based on a standard 1.27 m wide fibreglass roll. Estimates do not include overlap, trimming waste or offcuts.

Fibreglass Resin Quantity Calculator

Estimate reinforcement weight, resin quantity in kg and litres, catalyst quantity, and total laminate materials.

General guidance only. Actual resin usage varies based on reinforcement type, technique, overlap, waste and laminate efficiency.

Fibreglass Roll Coverage Calculator

Estimate total area coverage, reinforcement weight and approximate reinforcement volume from a roll length using a 1.27 m roll width.

Based on a fixed fibreglass roll width of 1.27 m. Estimates do not include overlap, trimming waste or unusable offcuts.

Complete the laminate

Don't forget these essentials

Resin is one part of the laminate. The right catalyst, reinforcement and application tools all matter to get the finish right.

Curing

Catalysts & Hardeners

Required to properly cure polyester, vinyl ester and epoxy resin systems.

  • MEKP catalysts
  • Epoxy hardeners
  • Catalyst dispensers
Shop Catalysts
Reinforcement

Fibreglass Mat & Reinforcements

Reinforcement fibres provide the structural strength in composite laminates.

  • Chopped strand mat
  • Woven cloth
  • Composite fabrics
Shop Reinforcements
Application

Fibreglass Tools & Accessories

Application tools for clean laminating, mixing and reinforcement handling.

  • Laminating rollers
  • Mixing cups
  • Brushes & spreaders
Shop Tools

Frequently Asked Questions

What is vinyl ester resin used for?
Vinyl ester resin is commonly used for fibreglass laminating, marine construction, chemical resistant tanks, pipelines, and industrial composite components where corrosion resistance and structural durability are required.
Is vinyl ester resin stronger than polyester resin?
Vinyl ester resin generally provides higher strength, better chemical resistance, and improved durability compared to standard polyester resins, making it suitable for demanding structural and marine applications.
Can vinyl ester resin be used in marine environments?
Yes. Vinyl ester resin systems offer excellent resistance to water absorption and osmotic blistering, making them widely used in boat building and marine composite construction.
What catalyst is used with vinyl ester resin?
Vinyl ester resins are typically catalysed using MEKP catalyst, similar to polyester resin systems. Always follow manufacturer recommendations for catalyst ratios and curing conditions.