Which of the following must be accurate about SPF (Spray Polyurethane Foam)?

The requirement for SPF (Spray Polyurethane Foam) to be applied when the deck temperature is above 50 degrees Fahrenheit is crucial for ensuring proper adhesion and overall performance of the foam. When the temperature is too low, particularly below this threshold, the material may not cure correctly, which can lead to inadequate bonding with the substrate. This can compromise the effectiveness and longevity of the SPF system.

Furthermore, applying SPF at temperatures below 50 degrees can result in other issues, such as improper expansion of the foam and potential defects in the final product. Ensuring that the deck temperature is within the recommended range helps maintain the quality and integrity of the application, ultimately providing better insulation and waterproofing benefits once cured.