Open-Cell Foam Insulation

Open-cell spray foam insulation is a spray-applied, half pound density, non-structural, thermal insulation material used in wall cavities, floor assemblies, ceiling assemblies and in attic applications. Open-cell foam insulation is a performance upgrade over conventional insulation that leads to energy efficiency, improved occupant comfort, a cleaner indoor environment and greater noise reduction for building/home owners.

Building envelopes with increased insulation levels are becoming standard practice. Consumers are increasingly involved in the selection of green building products due to rising energy costs and the recent availability of tax credits and energy rebates. Open-cell spray foam technology is a cost-effective solution to improve the energy efficiency of a building. The material expands 120 times its initial volume and fills cavities of any shape providing a continuous, protective air barrier that helps to minimize air leakage and air intrusion.

Download the Open Cell Spray Foam Technical Data Sheet
FOAM-LOK 500lapolla airtight open cell spray foam insulation tech details
Commercial Application TDSlapolla airtight open cell spray foam insulation

Open-Cell vs. Closed-Cell Spray Insulation Comparison

PropertiesOpen Cell SPFClosed Cell SPF
(ASTM D-1622)
0.4 – 0.6 pcf1.8 – 2.2 pcf
Blowing AgentWater/CO2 onlyWater/CO2 and 245fa
Aged R-Value
(ASTM C-518)
Open Cells
(ASTM D-2856)
Closed Cells
(ASTM D-6226)
≥5 lb/in2≥15 lb/in2
Air Permeance
(ASTM E-2178, E-283)
< 0.2 L/s-m2 Air Barrier
at 4½” Thickness
< 0.2 L/s-m2 Air Barrier
at 2″ Thickness
Surface Burn Characteristic
(ASTM E-84)
Class 1Class 1
Water Vapor Permeance
(ASTM E-96)
<1 perm at 2 inches Vapor Retarder
Water Absorption
(ASTM D-2841)
< 2% Resistant to Flood Damage4