It was an old brick built garage with an up and over door. Barely room for the 68 inside. I'm not aware of a water course running underneath, not a problem now with the insulated wood build.
If it only had single skin walls that amount of water doesn't surprise me. My garage does and the walls get very damp inside during wet weather, particularly the West facing wall. Most things metal in the garage are wet to the touch in cold damp weather. I really need to dry line it.
A tube has been laid in the concrete goes between the pit hole and the cavity in the wall, rope in the tube ready to pull cable through for when the pit is lowered in. I'll put a switch up on the wall to turn on lights/sockets in the pit.
Flat, sloping towards the back, same profile as previous. It's going to be fiberglass, never need to change it, costs more than felt but will last a long time. Also dosn't sweat like corrugated insulated roofing sheets.
Fingers grossed it turns out nice, it will be a dark grey colour. I can add insulation to the inside too.
Small update on the garage. No work done just yet. Had Dennison Doors pop around to look at the garage door opening. They are a local company that do garage doors. I mentioned that the garage will be a house for the cars, that insulation will be needed on the door, as a good effort has been made to insulate the walls.
I was going to look at just roller doors, but as sectional doors have more options on insulation, this could work well. I could also have loft space above the door that I can access once the door is closed.
Not decided yet, but the visit has given me more options to look at. As they are local and have the roller and sectional doors on show in white I'll take a look.
Roller door would be my preferance, just don't damage the runners! My old man did and door wouldn't shut fully every time. He also had radio controlled gates.
Dan, I want to send you a private message but can't find a path to it.