Polyurethane foam insulation application
Lengthened structural life, plus comfortable conditions
With the airform inflated, polyurethane foam insulation is applied inside, forming a layer two to three inches thick. This layer acts as a continuous and uninterrupted thermal barrier between the exterior and interior of the dome, an important element to keeping temperatures consistent within the structure, and is added until the structure meets necessary R values.
Insulation on architectural domes is thicker than in its bulk-storage counterparts to ensure energy efficiency and less temperature fluctuations inside. Better insulation equals utility savings and comfortable conditions for employee offices, customers, or visitors.
The intermediate structural role of polyurethane foam
To the foam, workers apply a network of two-inch-square metal plates called stickers with rods attached to their centers. A final layer of foam insulation is applied, and premat steel reinforcing is placed on top and connected to these sticker rods, creating a grid across the entire interior surface. With fasteners inserted and foam hardened, this layer serves a structural role in supporting the initial layers of steel matting and concrete.