DIY fans

[aprilmanha]

When you say converting... Do you mean remove garage door and replace with a big window?
Is there an internal door from your house (e.g. from kitchen) into Garage?.

Or, is it staying a garage, but with a wargaming table in it?

It's a built in garage with a door to the inside.
Removing the garage door and adding a wall and normal door for fire safety.
Then the rest of the room will have a new floor and ceiling I think for insulation.