Insulated Concrete Form Construction - a building service for the modern home builder
“Any type of foundation, flooring, partition, stair or roofing system is compatible with ICF construction.”
Insulating Concrete Formwork Association
 
Insulating concrete formwork is a building system that provides formwork for in-situ concrete structures. The formwork is then left in place permanently as thermal insulation. Used on the Continent and in North America for many years, ICF has proved to be a robust, cost-effective method of constructing a variety of building types from houses and basements to multi-storey cinemas and commercial buildings.

In essence, ICF consists of twin-walled expanded polystyrene (EPS) panels or blocks that are built up to create the walls of a house or other building. This formwork system is then filled with ready-mixed concrete to create a structure ready to accept the roof or floor construction. Many ICF systems also incorporate their own flooring system.

The EPS remains in place to provide complete thermal insulation for the walls of the finished building, and provides a uniform surface ready for the direct application of most finishes and proprietary cladding systems.
 
Daily Construction Sequence
   
First thing
Set out blocks or panels to plan
  Mid-morning
Build up the walls
  Lunchtime
Form windows, doors, bays and arches
     
Teatime
Fill with concrete
  End of day
First floor wall completed