Spray Polyurethane Foam
Spray Polyurethane Foam (SPF) is a versatile and high-performance insulation and sealing material widely used in residential, commercial, and industrial buildings. It is applied as a liquid that rapidly expands into a rigid or semi-rigid foam, creating a continuous barrier that adheres to surfaces such as walls, roofs, ceilings, and floors. Spray Polyurethane Foam is recognized for its superior thermal insulation properties, air sealing capability, moisture resistance, and structural reinforcement benefits.
SPF is created by mixing two liquid components—typically an isocyanate and a polyol resin—through a spray gun. When combined, these chemicals undergo a rapid exothermic reaction, forming a foam that expands and hardens within seconds. This application method allows the foam to conform to irregular surfaces, gaps, and cavities, making it ideal for retrofits and complex architectural designs. The result is a seamless, monolithic layer of insulation that minimizes thermal bridging and air leakage.
Open-cell SPF is softer and more flexible, with a lower density and higher permeability to air and moisture vapor. It is often used for interior insulation applications such as walls and ceilings, where it provides excellent sound dampening and effective thermal insulation. Open-cell foam is typically more affordable and expands significantly upon application, helping it fill larger cavities with less material.