The Polyurethane Expanding Foam system of 9703 (PART A) / 9707 (PART B) has been formulated to produce a free rise core density of 5.0 pcf.
This expanding form has a medium/fast cream time. It is designed for pipe-supports required to be obtained in a single-layer at medium/high thickness.
Per the manufacturer, the thinnest pour of correctly mixed chemicals to get a good foam reaction is 1” of material; on the thickest side, it is not recommended to exceed 6” of material. Anything within that range should provide a good reaction of the two components if they are properly mixed in the correct ratio using the right mixer and speed (1800 – 2000 RPM).