Using polyurethane insulation changes relatively little when you are planning construction timelines. While it can offer a much higher degree of protection from the elements than other types of insulation, the timing for installing it is similar to those inferior technologies.
Typically, you will want to spray in polyurethane at the same time that you would install any other type of insulation. Usually, this is after you have installed electrical wiring and done the rough plumbing work. In addition, you will also want to have completed the installation of heating and air conditioning ducts and air returns. The one exception to this rule of thumb for planning construction schedules occurs if you plan to use polyurethane insulation to seal a building's entire envelope. In that instance, you may need to spray the polyurethane in some areas before the ductwork is installed to ensure that the areas where the ducts will go have a proper seal.
While these rules of thumb usually apply, each project is different. If you don't have a great deal of experience in installing spray polyurethane installation, contact us. Our technical support department has experienced technicians that can help you figure out how and when to install our NCFI polyurethane insulation in your particular project for the best results and lowest cost to you.