EpoxyPro EPR-100A Epoxy Resin 

Low-Viscosity Blend of Bis-A / Bis-F Epoxy Resin, High-Performance Universal Part A

EpoxyPro EPR-100A is a low-viscosity blended Bisphenol-A / Bisphenol-F epoxy resin engineered as a universal, high-performance Part A suitable for virtually all epoxy applications.

With a controlled viscosity of 800–1100 mPa @ 25°C, EPR-800 offers excellent flow, deep penetration, strong wetting of timber and fibreglass, and highly reliable mechanical bonding across a wide variety of substrates.

As the primary backbone resin in the EpoxyPro UNI-SYSTEM™, EPR-100A represents over 90% of all Part A usage due to its consistent handling, broad application range and compatibility with all EpoxyPro hardener options.

KEY FEATURES

• Low viscosity: 800–1100 mPa @ 25°C
• Bis-A / Bis-F blended epoxy resin for stronger mechanical and chemical performance
• Excellent flow and wetting characteristics
• Outstanding on timber, boatbuilding and fibreglass work
• Universal utility across industrial, marine, construction and electrical applications
• Strong bonding to timber, steel, aluminium, concrete, FRP and composites
• Smooth mixing and predictable cure behaviour
• Compatible with both 2:1 and 3:1 hardeners
• Low shrinkage and high final strength
• Easily pigmentable for Clear, White, Black and Grey UNI-SYSTEM™ products

APPLICATION RANGE

EPR-100A is designed as a universal-use resin suitable for nearly all epoxy jobs, including:

Timber & Woodworking

• Wetting timber fibres
• Structural bonding
• Waterproofing and stabilisation
• Veneer and laminated assemblies

Boatbuilding & Fibreglass

• FRP layups and repairs
• Timber-to-FRP bonding
• Hull and deck reinforcement
• General marine repair

Industrial & Structural

• Component bonding
• Machinery repair and maintenance
• Structural reinforcement
• Adhesive assembly

Concrete & Flooring

• Crack filling
• Patch repair
• Bonding mortar and aggregates
• Floor edge repairs

General Purpose & Casting

• Small to medium castings
• Potting
• Decorative and functional resin work
• Filling voids and gaps

TECHNICAL PERFORMANCE

Base Chemistry:

• Bisphenol-A / Bisphenol-F blend

Provides:

• Lower viscosity for better flow
• Superior wetting of timber & FRP
• Enhanced mechanical and chemical resistance
• Strong, stable crosslinking

Viscosity:

• 800–1100 mPa·s @ 25°C

Mix Ratios:

Compatible with:

• EPH-200B (2:1) – Best flow, universal bonding
• EPH-210B (2:1) – High-viscosity potting & marine grade
• EPH-220B (3:1) – Deep-cure, low-exotherm structural applications

Cure Behaviour:

• (Depending on hardener)
• Excellent flow and levelling
• Strong adhesion to all major substrates
• Clean, controlled cure
• High mechanical strength

APPEARANCE & COMPATIBILITY

EPR-100A is a low-viscosity, clear epoxy resin fully compatible with the UNI-SYSTEM™ colour range:

Clear, White, Black, Grey

Pigment loads can be adjusted to suit industrial or decorative applications.

EPR-100A Our Leading Resin. Universal. Reliable. Proven.

Engineered for professionals who want one resin that can do nearly every job.
With unmatched flow, exceptional wetting, and proven performance across industries, EPR-100A is the workhorse Part A in the EpoxyPro UNI-SYSTEM range.