Water penetration, ice daming, convince me the time has come to seek out a roofing job.
Access to the very limited attic space is quite difficult. So improving ventilation and insulation might not be an option. Concentrating on the exterior what options should I look for to better assure a leak free roof job?
As a matter for consideration the lot is heavily wooded and shaded. So much so that moss appears in several places on the roof.