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Gaco WallFoam™ 173 Spray Foam

Gaco Western WallFoam™ 173 is an HFC blown (zero-ozone depleting) liquid spray system that cures to a low-density rigid polyurethane insulation material. WallFoam 173 contains material derived from naturally renewable resources and does not contain CFC’s, HCFC’s or other gases harmful to the environment. This system can be sprayed on clean dry substrates down to 40oF (1.66 oC). Refer to the Gaco Western General Instructions, SG-GacoFoam for spraying instructions. Gaco WallFoam™ 173 is a Class I fire rated foam.

To ensure optimum performance a minimum pass thickness of 3/4” (1.9 cm) is recommended with the maximum not to
exceed 2” (5.1 cm) per pass. For typical equipment settings, consult Gaco Western’s GacoFoam Spray Guide.

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Technical Specifications

Property Test Temp. ASTM Test Value
Nominal Density (Sprayed-in-place): 77°F (25°C) D-1622-93 1.6 – 1.8 lbs/ft3
Initial R Value: 40°F (4.4°C) C-518 7.45 R per Inch
Aged R Value: *See note below 75°F (23.9°C) C-518 6.3R per Inch
Compressive Strength (parallel to rise): 77°F (25°C) D-1621-94 24.5 psi
Tensile Strength: 77°F (25°C) D-1623 44.1 psi
Dimensional Stability: 158°F (70°C) 97% RH (14 days)-20.2°F (-29°C) Amb. RH (24 Hours) D-2126-94 -11.47% Vol Change+2.06% Vol Change
Recommended Service Temperature Range: N/A N/A -40°F (-4.4°C) to 200°F (93°C)
Closed Cell Content: 77°F (25°C) D-2856C-94 90.0%
Water Vapor Transmission: 77°F (25°C) E-96-95 2.0 Perm-inch