Single ply roof insulation.
Roxul on roof.
The brief answer is that you can substitute semi rigid mineral wool panels for rigid foam in any roof assembly that requires rigid foam.
An underlayment will be installed over the insulation and overhang and then the metal roof is installed directly on top of the underlayment.
Single ply roof systems can provide an easy to install seamless roof assembly.
The walls are covered in two layers of 2 in thick rockwool.
A few washer nails hold the comfortboard in place.
Made in canada by roxul comfortboard is one product in a line of stone wool products that combine the power of rock with the characteristics of insulation wool.
The insulation planes with the roof overhang on the left.
The siding will also secure it.