• Cleaning Debris - debris allows water to accumulate and can direct water where itshouldn't be. Be sure to clean gutters and downspouts. Use a broom as lightly as possible. Remove as little gravel from shingles as possible.
• Moss Removal - Moss will lift shingles as it grows breaking the seal to the underlying shingle which allows dirt to accumulate and water to be blown under shingles. I recommend hand removal of moss, not pressure washing. Pressure washing can drive water under shingles and flashing possibly causing attic damage. Also the pressure can damage shingles and decrease the life of the roof. Periodic maintenance using Zinc compounds is the best way to keep control of moss.
• Shingle Repair - Individual shingles can be damaged by branches, wind and foot traffic. Repair involves removing the damage shingle by carefully removing fastners, checking for underlying problems (damaged tarpaper or dryrot), clean the area to ensure new shingles lie flat. Matching color to an existing roof is not likely, but is always attempted.
• Vent Repair - Generally the flashing of vents is fine, but the seal around plumbing pipes can fail allowing moisture entry. An inexpensice, but temporary fix is to apply silicone caulk, but the permanent fix is to replace the vent.

Attic spaces, expecially in older homes, are many time not adequately vented. Venting removes heat and moisture which can cause damage to wood, ceilings, and insulation. The roof plan affects optimal vent location. The requirement is typically 1 sq ft of vent for every 150 sq ft of attic area. A similar amount of inlet vent area is also needed. Adding additional roof and soffit vents is straight forward, but care must be taken to ensure proper seal and that rafters are not damaged. Vent fans and whole house fans are an execellent way to add ventilation and help control internal temperature, if possible, I recommend the installation of attic fans for all older homes especially for summer use.