My summer project is to replace an old 8 x 6 shed with a wood store attached to it. The shed is starting to rot and has a big hole in the back where my terrier chewed through whilst trying to get into the shed when hedgehogs were nesting in there. The lean to wood store has started leaking water as the felt needs replacing.   What I am proposing is a wooden structure 2.1m wide x 3.8m long x 2.1m high at the front with a flat roof sloping down to 2m high at the back. The roof would be cov