The Old House Doctor- The Exterior

The next book I got is called The Old-House Doctor by Christopher Evers, it's a how to book on old home repair.  There are great illustrations, but I think it's going to be most useful when restarting more of the inside.  These are the major points I want to add to my exterior plans

• To reinforce the chimney (which looks like it's in good condition), but just in case I would add reinforcement to the connection to the roof.  To do this use flashing over and under the roof shingles, the top edges are mortared into the joints.  Also add an apron, and a valley, which forces water into the roof drainage system.  This tool will help water drainage, to prevent leakage.
• The front door is well intact but I would have the door's stability tested.  Paneled doors during the time the house was built were loosely fitted, so they could expand and then contract depending on the seasonal humidity change. 

Diagram on how the original windows were installed