Well, it's decision time. The shed door hinge pulled out of the shed over the weekend - note to builder/previous home owner - 1" screws into 1" pine to hold up a door made of particle board and 1" pine? Really???
Roof deck is rotted, sheathing is rotting. At a minimum, those need to be pulled off and replaced. For not too much more (36 bags of concrete, six or so additional sheets of plywood and some 2x4s), I can increase the size of the shed by 50%.
Here is the plan:
1) Excavate the area behind the existing shed, exposing the edge of the existing 4" concrete slab. I did this already.
2) Build form for 6" thick 5x9 concrete pad, and excavate two additional inches for stone base
3) Drill holes in edge of existing concrete slab for rebar - doweling the two pads together so they act/move as one slab
4) Pour the concrete (using a rented mixer) and let cure
5) Wait until spring. The back yard is very soggy in the spring, and moving dirt is.... difficult to say the least without destroying the yard.
6) Tear the rear sheathing off the existing shed and frame the addition
7) Tear the existing roof off, and then frame the addition roof - 2x4 rafters like the existing
8) Install new roof
9) Remove all sheathing and install new
10) Paint exterior
11) insulate and finish interior walls - paneled
12) Enjoy 40+ SF of new space.
Fun project!