To make the shed strong, I ordered some 2 inch thick x 200mm wide boards at 4.2m long as the flooring. Dad and I levelled up the floor and secured the 22mm under floor before putting down the new boards, fixing them together with biscuits and glue. We then screwed each board into the floor joists. In the afternoon we built a wall and added the shelving. Just before the end of the day I built a work bench.
