FAQs

The main difference between spray foam insulation and more traditional forms of insulation like fiberglass or cellulose is that spray foam insulation is an air barrier and thermal barrier all in one (with closed cell spray foam even offering a moisture barrier as well). This means that spray foam insulation does the job of providing insulation and air sealing with one product, whereas traditional forms of insulation do not provide any barrier to the flow of air. If you're looking for one of the best insulation companies in Murfreesboro, TN, get in touch with our team today!

There are two primary types of spray foam insulation: open-cell and closed-cell. Closed-cell spray foam cures into a dense, rigid material, while open-cell spray foam sets with a softer, more flexible structure. From a performance standpoint, closed-cell insulation delivers a higher R-value—approximately R-7 per inch—compared to open-cell, which averages around R-4 per inch. Closed-cell spray foam also becomes an effective air barrier with just one inch of application, whereas open-cell typically requires about three inches to achieve the same level of air sealing.

Moisture performance is another key differentiator. Closed-cell spray foam is moisture-resistant and does not allow water to pass through, while open-cell foam is water permeable. However, open-cell insulation offers added acoustic benefits, making it a strong option for reducing sound transmission and dampening outside noise. If you're looking for crawl space insulation in Murfreesboro, TN, or other insulation services, call JGL Spray Foam Insulation today.

While each home is different, open-cell spray foam is typically best for attic encapsulations, while closed-cell spray foam is better suited for basements and crawlspaces. Open-cell foam allows moisture to pass through, so if a roof leak occurs, it becomes visible and can be addressed quickly. For this reason, closed-cell spray foam is usually not recommended for attics, as it can trap moisture and potentially cause damage.

As one of the best insulation companies in Murfreesboro, TN, we will tell you that closed-cell spray foam is ideal for basements and crawlspaces. This is because it creates a moisture barrier that helps prevent damp air from entering the home. In certain high-wind or hurricane-prone areas, closed-cell spray foam may also be used along the roofline to add structural strength.

One added bonus of spray foaming along the roof (rather than the floor of an attic) is that the attic becomes climate-controlled storage by making that space more comfortable and freeing up your attic floor that will no longer be covered by traditional insulation. It is also shown to prolong the life of your HVAC air handler (if the air handler is in the attic) by preventing exposure to temperature extremes. Deciding whether to spray the attic floor or the roof decking sometimes comes down to budget as the attic floor can be less square footage than the roofline/decking.

For more information on our insulation services or to schedule crawl space insulation in Murfreesboro, TN, call our team today.

On new construction or major renovation projects, we can insulate exterior walls with spray foam or a combination of spray foam and traditional fiberglass batts through a process called flash and batt. For existing homes, spraying the attic and crawlspace/basement makes a substantial difference and leads to greater comfort and efficiency - without having to insulate the walls as well. Insulating walls on existing homes is a bit invasive, so we can help clients avoid this by focusing on the top and bottom of the thermal boundary of the conditioned space. For crawl space insulation Murfreesboro, TN residents love, contact JGL Spray Foam Insulation today.

Yes, spray foam insulation is safe. Some people can be sensitive to the fumes that come from the installation process. This process is known as off-gassing, which is why we recommend that occupants vacate the home once the spraying has begun and for a period of 12 to 24 hours after it ends. As one of the best insulation companies in Murfreesboro, TN, our team will work with you to create a schedule that works for you and your lifestyle. Call us today!

The quick answer is yes, spray foam will save you money on your power bills. The length of time it takes for payback is a harder question to answer. That depends on how you live in the home, how much you use your HVAC system, and more. As one of the best insulation companies in Murfreesboro, TN, our clients report savings between 15% and 30% on their energy bills with spray foam insulation. Get in touch with our team today to get started on your spray foam insulation!

If undisturbed and shielded from direct sunlight, spray foam should last the lifetime of the structure. It does not break down, so it lasts indefinitely. If you're looking for crawl space insulation in Murfreesboro, TN, don't hesitate to reach out to JGL Spray Foam Insulation.