The case can be made for spray foam performing better than all other insulation products. This form effectively stops air movement, allowing for excellent insulation against temperature exchange. The drawback is the cost which makes it prohibitive to many homeowners.
Open-cell spray foam (bubbles that burst upon application) expands to fill ay cavity. However, it offers a lower R-value compared to its closed-cell cousin that retains bubble-integrity to give a complete seal against air, water, and vapor.
Compared to any insulation material on the market, closed-cell apray is king, giving the highest R-value of all. This is because of not only its density, but it forms cells of trapped gas that helps boost the R-value by up to 70%.
As you can see, there is much to consider in the decision of updating or replacing your insulation. That's why we offer you a free expert consultation to help you make this important upfront decision.