Why use Closed-Cell Spray Foam?
Closed-cell spray polyurethane foam (ccSPF) can be used to create an unvented roof assembly that works in all climates zones. When made with Honeywell Enovate® blowing agent, ccSPF can be used to construct an unvented roof assembly that: Controls Airflow – ccSPF is air impermeable, adheres well to almost all construction surfaces and expands to fill voids creating an air seal and eliminating air leakage and preventing moisture laden air from causing condensation on the underside of the roof sheathing. Controls Heat Flow – ccSPF has exceptional thermal performance relative to other insulations (i.e. the highest R-value per inch.) and can be used to create a very compact roof assembly that meets or exceeds the code required thermal performance. Controls Rain Leakage – ccSPF has low water permeability, low water absorption, and excellent adhesion allowing it to act as a secondary rainwater barrier to limit damage when primary roof assembly rainwater control membrane leak.
