These pictures will help you determine if you have roof damage.

Algae buildup

• Caused by growth of airborne algae deposited on roof
• Unsightly appearance does not affect the service life of the material
• Common problem in warm, humid climates
• Algae resistant shingles available regionally

Curling shingles

• Caused by improperly applied felt (buckling)
• Caused by movement in deck (buckling)
• Caused by undersaturation of felt in organic-based shingles (curling)

Decaying shingles

• Caused by absorption of moisture by mat at the core of the shingle
• Common problem with organic-based shingles.

Water damage to sheetrock

• Caused by leaks in roof
• Check attic or crawlspace for leaks in deck
• Check chimney and vents for cracks in flashing
• Check rafters for leaks that travel away from original source
• Check roof for damaged shingle

Blistering Shingles

• Caused by moisture in shingles
• Caused by excessive use of asphalt plastic cement 

Missing Shingles

• Caused by improper fastening
• Caused by exposure to high winds
• Can usually be replaced individually

Hail Damage Photos: