AC390 - Spray Polyurethane Foam Insulation

Overview

Spray Polyurethane Foam (SPF) insulation is a two-component chemical product that expands and hardens when applied to create continuous insulation and air barrier systems. Available in open-cell (low-density) and closed-cell (high-density) formulations, SPF provides excellent thermal performance, air sealing, and moisture control. This spray-applied insulation adheres to irregular surfaces and fills gaps and voids, making it ideal for both new construction and retrofit applications in walls, roofs, crawlspaces, and attics.

Purpose

This acceptance criteria provides a basis for evaluating spray polyurethane foam insulation systems that may not be directly covered by existing codes. It establishes testing protocols, fire performance requirements, thermal performance standards, and installation specifications needed for code approval of SPF insulation systems.

Benefits of Compliance

• Nationwide acceptance by building officials for SPF installations
• Streamlined approval process for spray foam insulation systems
• Third-party verification of fire safety and thermal performance
• Enhanced marketability for insulation contractors and manufacturers

Resources

• ICC Evaluation Service