Plastic Formwork System Comparison Guide

What is Plastic Formwork?

Plastic formwork refers to modular or continuous form boards manufactured from engineered plastics. It replaces traditional timber and some steel systems, offering longer service life, consistent dimensional accuracy, and lower whole‑of‑life project costs.

Plastic formwork is often chosen over timber or steel when a project requires boards that won’t swell or delaminate, lighter handling weight, consistent edge accuracy on repeat pours, and minimal maintenance across multiple uses.

Major Plastic Formwork Systems in Australia

This guide covers the most commonly used systems in the Australia market:

1. Con-Form Flexible Form Boards (Continuous Plastic Board System)

Best for: curves, paths, garden edging, residential slabs, and quick-repeat setups.

Con-Form’s continuous plastic boards are preferred for shaping curves or following natural ground lines. They’re light, easy to connect, and ideal for fast edge-forming on slabs-on-ground.

Use this system when:

The pour requires smooth curves or radius work
The site demands a quick setup and strip-out
You need consistent, repeatable edges without board degradation

Related products:

2. Con-Form FibreForm Boards (Fibre-Reinforced Plastic)

Best for: straighter edges, pavements, footpaths, and applications that need more rigidity.

FibreForm offers a straighter, stiffer board compared with the flexible system. It still handles minor curvature, but its main benefit is precise, straight edgework.

Use this system when:

Edge accuracy is a priority
The project requires higher stiffness
You want a reusable alternative to formply for slab edges

Related products:

Con-Form FibreForm Boards

3. Plastic Column Form Tubes

Best for: smooth-finish round columns, simple stripping, and architectural pours**

These tubes provide clean, circular columns with minimal finishing required. They’re ideal when speed and finish quality matter more than multiple reuses.

Use this system when:

A smooth architectural finish is required
Rapid setup is needed
Stripping must be fast and clean

Related products:

Plastitubes

4. Cupolex & Slab Void Forming Systems

Best for: slab voiding, improving load efficiency and reducing concrete volumes

Cupolex isn’t a forming board, but it’s a widely used plastic forming system for creating structural voids. It reduces concrete consumption, increases airflow, and speeds up slab preparation.

Use this system when:

Building slabs over unstable ground
You want to reduce concrete use
Speed of placement is a priority

Related products:

Cupolex
Waffle Pods (Alternative Void System)
Geopod (Alternative Void System)

5. Modular Plastic Wall Formwork Systems (General Industry Systems)

Best for: vertical pours, commercial walls, repetitive set-ups**

These panelised systems (e.g., AFS-style categories) support consistent vertical forming with minimal maintenance. They’re suitable for mid-rise and commercial applications.

Use this system when:

Repeatability is critical
You want lighter handling than steel-ply
Forming speed directly affects productivity

Related products:

Cupolex
Waffle Pods (Alternative Void System)
Geopod (Alternative Void System)

Comparison Table: Key Attributes

System	Reusability	Curved Forming	Setup Speed	Finish Quality	Best Use Cases
Con-Form Flexible Boards	High	Excellent	Fast	Good	Paths, kerb edges, curved slabs
Con-Form FibreForm	High	N/A	Fast	Very good	Slab edges, pavements, house slabs
Plastitube Column Forms	Single/multi‑use	N/A	Fast	High	Round columns
Cupolex Void System	One‑way usage	N/A	Very fast	N/A	Structural voiding, slabs
Modular Plastic Wall Formwork	High	Limited	Moderate–fast	Good	Walls, vertical pours

Project Examples Using These Systems

For real applications of these systems, see:

Cupolex in Domestic House Slab
General Formwork Project
Steel-Ply System: Isis Mill (for complementary systems)

These examples show how different forming systems integrate across actual residential and commercial pours.