Building with ICF

What is insulated concrete form construction?

ICF combines permanent insulated formwork with a reinforced concrete core. It is a building method, not a visual style—and our experience helps connect the system to the wider job of building your home.

Open ICF forms showing the void prepared for reinforcement and concrete
01

The forms establish the wall profile and remain in the completed construction.

The principle

Three functions in one wall-building sequence.

Form

Permanent formwork

Interlocking units create the shape that contains the concrete during placement.

Core

Reinforced structure

Concrete and reinforcement form the structural core to the project engineer’s specification.

Envelope

Continuous insulation

The insulated faces remain on both sides of the core as part of the wall build-up.

On site

The construction sequence

  1. 01

    Set out

    The first course establishes wall position, corners, openings and levels.

  2. 02

    Stack & reinforce

    Forms are stacked while horizontal and vertical reinforcement is introduced to the engineer’s design.

  3. 03

    Brace & check

    Alignment systems support the walls and provide a working platform before concrete is placed.

  4. 04

    Pour

    Concrete is pumped into the forms in a planned sequence and consolidated around the reinforcement.

  5. 05

    Continue the build

    The permanent forms remain around the concrete core, ready for specified internal and external finishes.

Claims, carefully made

Performance depends on the whole building.

Wall performance, energy use, comfort and environmental impact depend on the complete design, specification, workmanship and operation of a home—not one product in isolation.

Any project-specific performance figures should be assessed against the relevant drawings, calculations, test results and manufacturer documentation.

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