The average spray foam insulation in Chicago takes about two weeks to complete. The amount of time it takes to insulate your home depends on the scope of your project and the size of your home. For example, if you’re insulating an existing house with spray foam insulation in its walls, attic, and crawl space, it can take as long as three to four weeks to complete—on average. If you’re only insulating an external wall or rim joist with spray foam insulation, it will likely take less than a week. It’s important to note that this time frame varies depending on various factors including:

It’s important to note that this time frame varies depending on various factors including:

– Your geographical location (e.g., whether or not you live in the tropics).

– The weather conditions at the time of installation (e.g., if there’s rain or snow).

– The number of contractors working at one time during installation (e.g., if there are three people working on your house at once versus two).