Are you going to insulate it at all?
I was pondering that too. The window glass will fill a bit more than half the vertical height of the walls, that leaves about 3 1/2 feet from the floor to the window sill. There will be a four inch gap that will be worth insulating. The glass was recycled from bus shelters. It’s thick stuff 6-8mm, with no air gap it would lose a lot of heat. It might be possible to put some insulation in between the purlins, but it would be a faff. The tin itself has some sort of membrane that is supposed to catch condensation drips. We’ve used some foam strips to seal the ridge and the bottom.
Would it be worth isolating the gaps between the floor joists?
I’m going to put a stove in it, I’ve got a lot of wood so I could be quite extravagant with the heating. I’ve got my eye on one of these for it. It’s only a shed at the end of the day, I need natural light to work by, so it’s a bit of a compromise.
Total build costs so far are £800 for timber and nails, £600 for the roof. The floor will be another £200. With the stove the total should be around £2200. one could so easily spend a whole lot more, but I think this build/budget will do all I need it for.