PU Hardeners

Overview

What are PU Hardeners?

PU Hardeners are the curing component of compatible two-part polyurethane coating systems. Mixed at the specified ratio, they help produce a hard, durable film with a smooth professional finish and stronger resistance to everyday wear.

  • Catalogue-listed 4:1 Interior and Exterior systems
  • Supports high durability and long-lasting protection
  • Helps resist scratches, chemicals, water and abrasion
  • Available in 200 ml, 1 litre and 5 litre packs

Strong Curing Action

Activates compatible PU bases to form a tough, dependable coating film.
Stain & Seal

Consistent Mixing

The defined 4:1 system supports accurate preparation and predictable results.
Uncompromising Quality

Durable Finish

Helps deliver scratch, abrasion, chemical and water resistance.
Fast Drying

Efficient Drying

Supports efficient curing and a rich, smooth professional finish.
PU Hardener
PU Hardener Range
Catalogue

PU Hardeners Range

  • Pu Hardener 4:1 Interior
  • Pu Hardener 4:1 Exterior
Premium NC Putty

Where PU Hardeners Are Used

Furniture & Kitchens

Modular kitchens, cabinets and furniture requiring a hard, premium protective PU finish.

Architectural Woodwork

Doors & Interior Woodwork

Doors, partitions, MDF and decorative panels where smoothness and daily-wear resistance matter.

Pergolas & Cladding

Exterior Woodwork

Compatible exterior PU systems for woodwork requiring added weather and UV protection.

Application

How to Use PU Hardeners

Four careful steps for compatible preparation, accurate 4:1 mixing and reliable curing.

Prepare the Surface

Prepare the System

01

Sand, seal and prepare the surface, then confirm that the PU base and selected hardener are compatible.
Chemical Resistant

Measure at 4:1

02

Measure four parts compatible PU base to one part PU Hardener, then stir thoroughly for an even blend.
Pre-Paint Demo

Apply Within Pot Life

03

Adjust only with the recommended PU thinner and apply smooth, even coats within the workable pot life.
Cure & Maintain

Allow Full Curing

04

Let the coating cure in a clean, ventilated area before sanding, recoating, handling or exposure.
PU Hardener FAQs
FAQs

Your Questions, Answered

What is PU Hardener used for?

PU Hardener reacts with a compatible polyurethane base to create a tough coating film with improved durability, adhesion and finish performance.

Can PU Hardener be used with every coating?

No. Use it only with the matching PU coating system and follow the specified ratio. An incompatible hardener can affect curing, adhesion and appearance.

What does the 4:1 ratio mean?

It means four measured parts of compatible PU base are mixed with one measured part of PU Hardener. Accurate measurement supports proper curing and durability.

Which PU Hardener should I choose?

Choose PU Hardener 4:1 Interior for compatible indoor systems and PU Hardener 4:1 Exterior for compatible outdoor systems. Confirm the complete system before application.