On 26 Jan, 16:51, wrote:

What about bolt cutters or similar to completely avoid the risk of hot
metal or sparks in the loft.

If it's just made of bolts then maybe. Bolt cutters are diagonal
nippers, not bypass shears, so they're a bit rubbish for long cuts in
sheet.

If it's the usual thin steel sheet and a pair of Wiss snips, then
rather you than me. In that case I tend to favour a hacksaw for the
angle frame, then an axe (4-6lb, not a hand axe) downwards through the
sheet.