Product Guide Insulating Concrete Forms Photo: BuildingGreen, Inc. Behind the recommendations Related articles Behind the recommendations Related articles Insulating Concrete Forms Non-XPS insulating concrete forms that help minimize embodied carbon while maximizing performance More about Insulating Concrete Forms Considerations of Insulating Concrete Forms (ICFs) A look at what distinguishes the different types of ICFs. Insulated Concrete Forms Great thermal performance with a lot of rigid foam Thermal Mass and R-value: Making Sense of a Confusing Issue Background on the physics of heat transfer to help understand the relationship between thermal storage and heat flow, and when this information is relevant and how it should be used in building design.