Hi all, hoping to have finally found the place to answer my question :)

I have a garage which is part of the house (IE under other rooms) . I want to insulate the single skin metal door, as it gets extremely cold in there and we use it regularly.  So, a couple of questions if anyone can help:

1) Does this garage door insulation actually need to be fireproof if there is already a fire door between the garage and the house?
2) Assuming it does, does anyone know of any cost effective Class 0 or class 1 insulation which would be suitable?

The only thing i've seen which fits the bill is superfoil SNFC, but it only comes in 8M rolls , might be too thick, and has a high cost. 

Thanks :) 

anyone any ideas? Thinking of now using superoil SF19FR which is Class 0 and and class 1... adhered to the door.
Would that be okay for fire regs?

 

I'm guessing the metal door is between the garage and the outside? If so use what you want.