Meir Roofing

Phenolic foam is similar in structure to rigid urethane foams, and needs to conform to internationally agreed ODP levels. An extremely small cell size is possible, and leads to an improved λ value. The cell walls tend to be friable, which makes the foam rather vulnerable to damage but formulations are rapidly improving.   The advantage of phenolic foam is a greater resistance to high temperature than other foams, and the possibility of improved performance in a fire.   In other respects phenolic foam is similar to rigid urethane.