What Causes Shingle Damage?

The most common causes of shingle damage in Palm Beach County, Florida include hurricane and tropical storm winds, UV radiation causing granule loss and brittleness, algae and mold growth, poor installation or fastening, impact from storm debris, thermal cycling stress, and improper foot traffic. Understanding what causes shingle damage helps property owners take proactive steps to prevent it.

Common Causes of Shingle Damage in Florida

• Wind uplift: During hurricanes and tropical storms, wind gets under shingle edges, breaking the self-seal bond and blowing shingles off. Impact-resistant shingles with stronger wind ratings reduce this risk.

• UV degradation: Florida's intense year-round sun causes granule loss, asphalt brittleness, and eventual cracking over time.

• Algae growth: The black streaks on shingles common in South Florida are caused by Gloeocapsa magma algae, which feeds on shingle granules, accelerating deterioration.

• Impact damage: Flying debris during storms can crack, split, or punch through shingles. Hail, while less common in South Florida than other regions, can also cause shingle damage.

• Thermal cycling: Florida's extreme daily temperature swings cause repeated expansion and contraction that can crack aged asphalt shingles.

• Improper installation: Shingles not installed per Florida Building Code specifications (wrong nail placement, insufficient overlap) fail prematurely in wind events.

Frequently Asked Questions

What causes shingles to blow off during a Florida hurricane?

Shingles blow off when wind uplift forces exceed the shingle's wind rating, often due to failed self-seal adhesive strips, improper nailing, or aged/brittle shingles. Impact-resistant Class 4 shingles with 130 mph ratings significantly reduce blow-off risk.

Repair Storm-Damaged Shingles with Ranger Roofing

Ranger Roofing provides expert shingle damage assessment and repair throughout Palm Beach County. Call (561) 842-6943 or visit ranger-roofing.com for your free inspection.