Leaking roofs, poor drainage, and clogged gutters and downspouts can lead to significant water damage inside your home. This is why it is important to get an accurate roof inspection report regularly, both for the inside and outside of the roofing structure.
Outside Roof Inspection
It is very simple to inspect a roof from the outside as long as you have a good unobstructed viewing point on the rooftop. The following checklist of problem warning signs will help you look for any potential problems during an outside roof repair inspection report.
1. Blistered, curled or split shingles
2. Loose or missing shingles or tiles
3. Loose nails
4. Exposed nails (can lead to leaks in the roof)
5. Dark patches on asphalt shingles and/or large amounts of granules in the rain gutters (granular coating is wearing away)
6. Sagging on the ridges or in the center of the roof
7. Broken or loose shingles at the ridgelines and hip lines
8. Rusty or corroded metal (flashing) and loose shingles in the valleys, plumbing vents or near chimneys (it may be necessary to remove excess debris and leaves to inspect thoroughly)
9. Rusty metal or loose shingles where vertical sides of the house meet the roof
10. Overflowing gutters or excess water pooling near the foundation of the house
11. Blisters, depressions near vent pipes, separations in flashing, and clogged drains on flat roofs (pop blisters with a knife and coat them with roofing cement to prevent further damage; depressions can also be filled with roofing cement).
Indoor Roof Inspection
The following checklist includes all the problem warning signs to look for during an indoor roof inspection:
1. Sagging decking between the rafters (if the decking is sagging or deteriorating, the decking will also need to be replaced during a roof replacement)
2. Outside light seen through the roof (this may not be a problem on shake roofs since they tend to swell and prevent leaks during the wet months)
3. Signs of leaking in the attic (dark spots in the wood, especially around vents, chimneys, and other holes to the roof)
4. If dark spots are still wet or soft they are a current problem, if dry and hard it is most likely an old problem that has been fixed
5. Signs of water damage or leaking (usually in the form of water stains, or sagging ceilings due to an active leak or condensation from poor roof ventilation).