Right - Closed-cell spray foam insulation fills the wall cavities of the exterior walls in this home retrofit | Building America Solution Center
![Exterior walls filled with open cell spray foam insulation. Makes a house tight, comfortable, and energy-… | Spray foam, Diy spray foam insulation, Spray insulation Exterior walls filled with open cell spray foam insulation. Makes a house tight, comfortable, and energy-… | Spray foam, Diy spray foam insulation, Spray insulation](https://i.pinimg.com/736x/5f/03/73/5f03738bc8ea9c61b91b7d7050dd992c.jpg)
Exterior walls filled with open cell spray foam insulation. Makes a house tight, comfortable, and energy-… | Spray foam, Diy spray foam insulation, Spray insulation
![Spraying Rigid Polyurethane Foam Composite Polyether for Wall - China Blend Polyol and Polyurethane Rigid Foam Spraying Rigid Polyurethane Foam Composite Polyether for Wall - China Blend Polyol and Polyurethane Rigid Foam](https://image.made-in-china.com/2f0j00nOYQRfjFYWpU/Spraying-Rigid-Polyurethane-Foam-Composite-Polyether-for-Wall.jpg)