9 Warning Signs You May
Have a Problem
If your roof is more than 15
years old and shows any of the following warning
signs, you may already have a problem:
|
|
Ceiling
Spots
- Caused by leaks in the
roof
- Check attic and crawl
space for leaks in the deck
- Check chimney and vents
for cracks in flashing
- Check rafters for leaks
that "travel" away from
original source
- Check eaves for water
backing up from ice dams
- Check roof for damaged
shingles
|
 |
Damaged
Flashing
- Caused by improper installation (on new roof)
- Caused by drying and cracking
(on old roof)
- Can sometimes be repaired without replacing roof
|
 |
Missing
Shingles
- Caused by improper fastening
- Caused by exposure to high winds
- Can usually be replaced
individually
|
 |
Buckling &
Curling
- Caused by improperly applied
felt (buckling)
- Caused by movement in deck
(buckling)
- Caused by under saturation of
asphalt felt (curling)
|
 |
Blistering
- Caused by application over wet
deck
- Caused by moisture in shingle
- Caused by inadequate ventilation
|
 |
Fungus
Growth
- Caused by growth of airborne
fungi or algae deposited on roof
- Appearance problem that does not
affect the service life of the
roofing material
|
 |
Missing
Granules
- Normally a certain number of
granules will be loose, especially
after application
- On aging shingles, indicates
need for replacement
|
 |
Rotting
- Caused by absorption of moisture
by mat
- Common problem with
organic-based shingles
|
 |
|
