Cavity Wall Spray Foam Insulation

Icynene, the leading soft foam insulation and air barrier system, is the industry standard for providing maximum building envelope performance

Icynene’s Cavity Wall Insulation formulations represent a breakthrough in the science of moisture and thermal Cavity Wall management.

Icynene is the leading 100% water-blown foam insulation that minimizes air leakage for increased energy efficiency, creates a healthier indoor environment, reduces airborne sounds and offers greater design freedom. Icynene maintains its performance with no loss of thermal resistance over time. It does not shrink, sag or settle. Icynene adheres to most construction materials and is the perfect insulation for Cavity Wall Voids.

Icynene’s pour fill variation is an insulation and air barrier that injects the latest building technology into an older building to maximize energy efficiency while still preserving its original architectural details. Icynene fills the wall cavity completely, starting at the bottom and slowly expanding upwards to 60 times its initial volume. Since Icynene expands in the direction of least resistance, it will not expand outward and damage the wall. Infact, once installed, Icynene can add to the structural strength of the building.

The Cavity Wall Insulation formula has an impressive thermal conductivity of 0.034 – 0.039 W/mK.

We always welcome new enquiries and would be pleased to discuss your requirements. We look forward to speaking with you


Icynene Cavity Wall Insulation is typically used in existing building cavities to provide a thermal barrier which then controls building temperature accordingly. The pour fill formula can be used in Residential, Commercial, Industrial or Leisure applications of any type.

HomeFoam are the UK’s leading Cavity Wall Insulation Installer. Combining over 23 years of installation experience, our certified knowledge and expertise is delivered as standard.