Dear 3M-ers,
I have a customer who is producing insulation panels using stirodur as insulation panel. We have provided 78 cylinder spray and 3M S/W application gun and hose. I have also provided application videos from 3M but still we haven’t reach satisfactory results. Attached are photos of the applied 78 which burn (melt) the material.

Do you have any recommendation how to precede and get satisfactory results?
Kind regards,