Preparing to Install Spray Foam

Possibly the most important step of installing spray foam insulation is the preparation phase. It is our priority to take steps to protect against overspray, and be sure to leave the site better than when we started.

When you trust Evergreen Insulation with your spray foam insulation project in Spokane or Coeur d’Alene, the preparation phase is included in our price estimate. We will use plastic sheeting to protect all surfaces including windows, doors, and countertops. We have learned efficient ways to cover and protect your property over the course of our 50 years of experience.  Leaving the preparation phase to us also relieves you of any liability. 

When preparing for the installation of spray foam, the customer should clear the building of as much property as possible. There is always the chance that something can be damaged by overspray if it is not removed or covered properly. Components of the building that cannot be removed may increase the cost of installation because we must take such meticulous care to keep them protected

When is it Time for the Spray Foam?

Spray foam may be installed only after all plumbing, electrical and HVAC work is completed. It is very hard to undo the installation of spray foam, therefore all of these elements should be in place prior to the installation in order to be as cost-effective and energy-efficient as possible. Make sure that any other subcontractors on the job have completed their work before we arrive on the scene. 

Reasonable efforts should be made to avoid the delivery of drywall until after the completion of the spray foam insulation. Any uninstalled drywall may pose a safety hazard for our team, it is difficult to work around and will have to be covered and protected from overspray, making the job more complicated. 


Installation of spray foam will require the maneuvering of a heavy 3-inch hose. This will connect to a truck which will distribute the spray foam mixture. The area leading up to the structure to be insulated should be clear of snow, dumpsters, and building materials or equipment that could prevent access by our vehicle. 

Preparation of the Structure

All plumbing, ductwork, and electrical wiring should be securely fastened before installation begins. As the foam expands after it is sprayed, these features can be dislodged unless they are properly secured.

For the safety of our crew and your building, all floor vents should be covered before the start of the project. This will prevent the possibility of anyone getting hurt, as well as keep out any dirt, debris, or overspray. 

Any stairwells or incomplete balconies may also be a safety hazard.  These areas should have safety railings in order to keep everyone safe. You can help reduce the risk of work-related injury if you follow these guidelines to provide a safe and compliant job site.

Help to keep overall costs down by following these simple steps, and more importantly help to keep the job site safe for everyone. Be sure to ask if you have any questions. We are committed to helping our customers compare a worksite that is safe for everyone and allows the job to go as smoothly as possible.