ICF-Therm is an Insulating Concrete Formwork (ICF) system that allows for fast construction of creative, flexible buildings with low running costs and a long sustainable life.

Where can it be used?

  • Residential Houses
  • Apartment Blocks
  • Commercial Projects
  • Nursing Homes

Benefits of ICF

  • Building Regulations & Nzeb - We understand that compliance with Building Regulations and the recently imposed obligations of NZEB is crucial for you. Our ICF walls work in conjunction with complementary best-practice energy-efficient options that help you easily achieve compliance alongside NZEB  requirements and A Ratings.
  • How high can ICF Therm be built - ICF-Therm blocks are designed to withstand the  pressures of wet concrete with pours up to 3 meters in height.
  • Thermal Bridging - With an ICF-Therm wall, the thermal mass of the concrete combined with the expanded polystyrene insulation inside and outside the concrete core help keep the building warm in winter and cool in summer, conserving energy and reducing temperature fluctuations.
  • Air Tightness  - ICF-Therm walls eliminate air leakage due to the sealing effect of concrete and the low permeability of the formwork maintaining a strong air barrier over the long life of a building, increasing energy efficiency and allowing controlled ventilation.
  • Fire Resistance - By providing a two-hour fire rating our products are fire-resistant to very high standards.
  • NSAI Certified - Our system is certified by NSAI.
  • U Value - The ICF - Therm system offers the following optional wall U values:


ICF Block Type ICF Wall Thickness (mm) Concrete Core Thickness (mm) U-Value (W/m²k)
310 mm Block White 310 150 . 22 *
335 mm Block White 335 150 .19 *
360 mm Block White 360 150 .17 *
310 mm Block Grey 310 150 .19 *
335 mm Block Grey 335 150 .17 *
360 mm Block Grey 360 150 .15 *


Key features

  • Core thickness – can supply in 150mm and 200mm
  • Choice of ICF block thickness 310mm 335mm and 360mm
Our Product Range
Our Product Range
Technical Info
Technical Info

Brochure & NSAI Certificate