How to fit a Velux properly - including the insulation kit

[Square Feet]

I just watched this video of how to properly fit a Velux window, including the insulation kit.  It's a good one to watch even if you don't intend fitting your Veluxes yourself as it will allow you to make sure your carpenters fit them properly - including the insulation kit, which is supplied in a separate box and apparently just gets thrown away by a lot of joiners/roofers who don't know what to do with it 🙄