Use metal roof panels on the top and sides. It’ll last forever or until a tornado rolls thru.
Note**** Use plywood on the roof and then roof panels. If not you’ll get dripped all over on frosty mornings***
4x8 or 6x8 is the perfect size for a couple office chairs.
My latest favorite is 4x6 with a full length wooden bench with cushions instead of chairs. Build it right and it’s very comfortable and no chairs squeaking, banging or rolling around making noise. It’s more like sitting on your couch, add arm rests made from 2x4’s.
Tons of DIY window ideas on youtube
