Which type of insulation is known for its superior thermal performance?

Spray foam insulation is recognized for its superior thermal performance due to its unique composition and application method. When it is applied, spray foam expands to fill gaps and spaces, creating an airtight seal that minimizes air leakage. This characteristic significantly enhances its insulation effectiveness, as it prevents the transfer of heat, both into and out of the building.

The R-value of spray foam is generally higher than that of other types of insulation, meaning it provides more thermal resistance per inch of thickness. This results in superior energy efficiency, as homes insulated with spray foam tend to require less heating and cooling, thus lowering energy consumption. Its ability to conform to various surfaces and spaces also allows for better coverage, which further improves thermal performance.

In contrast, other types of insulation, such as fiberglass or cellulose, may not offer the same level of air sealing or thermal resistance and can be more susceptible to settling or compression over time, which can diminish their effectiveness. Mineral wool insulation is excellent for fire resistance and soundproofing but does not match the thermal performance of spray foam. These distinctions illustrate why spray foam insulation is generally viewed as superior in terms of thermal performance.