Leaking roofs, poor drainage, and clogged gutters and downspouts can lead to significant water damage inside your home. To help determine if you need a new roof, your roofing contractor will conduct an outside and inside roof inspection.
Inspecting a roof from outside is very simple. All that is needed is a pair of binoculars and a viewing point that is unobstructed by other buildings or trees. Following is a checklist of problem signs you can look for during an outside roof inspection.
Outdoor Roof Inspection
Ceiling Spots
Caused by leaks in the roof
Damaged Flashing
Caused by Improper installation on a new roof
Drying and cracking on an old roof
Dented by improper nailing
Settling of the Structure
Missing Shingles
Caused by improper fastening
Exposure to high winds
Curling
Caused by water absorption
(in wood or fiber-reinforced shake)
Algae Growth
Caused by growth of airbourne algae.
Occurs most often in warm, humid climates such as the southeast United States)
Blistering
Caused by moisture in the shingle
Occurs when ventilation is inadequate.
Missing Granules
Normally a certain number of granules will be loose, especially after application.
On aging shingles, this indicates the need for replacement.
Buckling
Caused by improperly felt, or movement of the deck
Rotting
Caused by absorption of moisture by the mat.
Common problem with organic-based shingles