Which aspect is primarily assessed in a density test for spray foam?

In a density test for spray foam, the primary aspect being assessed is how the material performs at varying thicknesses. Density is a critical factor because it directly influences the thermal performance, structural integrity, and overall effectiveness of the spray foam as an air barrier.

Higher density spray foams typically provide better insulation and resistance to air leaks, as they tend to be more stable and durable under varying conditions. The performance of the material can significantly change depending on its thickness, making it important to evaluate how density correlates with thickness in practical applications. Therefore, assessing material performance at varying thicknesses during a density test is crucial to ensure the spray foam meets the required standards for air barrier applications.

While surface texture, thermal properties, and installation thickness may play roles in overall performance, they are not the primary focus of the density test itself. The test specifically aims to analyze the density to ensure that the spray foam will perform efficiently as an air barrier across different applications and thicknesses.