ICF Help & Advice

Our insulated concrete formwork help & advice centre has been created as a reference and information hub for designing and building ICF structures in general, and Polarwall in particular.

ICF Construction

When placing the bracing onto ICF walls it is imperative that this is done at the right time. with Polarwall we place the corner braces when there is only one course of height in the wall.  

Failure to put the corner braces on at this early stage can lead to the corners being built out of square, which in turn leads to walls that are not straight. During the build the corners need to be checked for plum at least once a day and preferably twice a day.  

The internal braces along the straight walls are always set to the interior except in the case of the T-intersections where they are placed on the outside of the T and usually outside of the building footprint.  Internal braces are set at between 1.5 metres and two metres centres. These braces are placed on the wall when three courses of formwork have been built. 

All the braces are adjustable for fine alignment of the walls. 

Keeping to these simple principles will ensure straight walls. plumb corners and a perfect structure for follow on tradespeople. 


The various sections above cover the main topics for ICF construction both above and below ground. 

Do not use this as an alternative to what your chosen manufacturer recommends.  We can do things with Polarwall that ICF blocks can’t do and there may some things that you do with other ICFs that Polarwall can’t do. For example our instructions on vibrating the concrete may not be wise on some EPS block systems. 

We want to add to and develop this section, so we welcome all your questions, suggestions for topics and feedback.  If you want to go deeper into a topic please let us know.  This advice hub does not replace our training (or any other companies training) and you still need to avail yourself of our FREE training course.