Open Cell Spray Foam

Open cell spray foam is predominantly used in timber frame construction or the underside of roofs in either attic spaces or loft conversions. Basically, it can be applied anywhere fiberglass was traditionally installed.

Open Cell applied to timber frame constuction

As the open cell foam is sprayed, it increases in volume up to 100-120 times. Because it is sprayed, the foam fits all shapes, corners, and cavities perfectly. This provides a continuous, solid, and airtight insulation layer while still allowing the structure to breath.


  • U-value 0.0376 W/m2K
  • Seven times better air seal compared with traditional insulation.
  • Energy savings of about 50% compared with conventional insulation



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