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10 Warning Signs Of A Bad Roof

Most people don't hop up on their roof on a regular basis or even think about their roof for that matter. Unfortunately, neglecting your roof can lead to serious damage and costly repairs. So how do you know if you might need a new roof? Keep an eye out for these 10 Warning Signs.



1. Missing Granules​

  • Small amounts of granules will be loose after application of a new roof.

  • On older shingles, missing granules indicate a need for replacement

2. Algae

  • Caused by the growth of air-borne algae which deposits on your roof

  • Algae resistant shingles are available

3. Curling​

  • High nails or lack of back coating

  • Under-saturation of asphalt felt in organic shingles.

  • Lack of ventilation or improper number of fasteners

4. Blisters​

  • Moisture in the shingle

5. Ceiling Spots

  • Check attic for leaks in decking

  • Check protrusions through the roof (i.e. chimney and vents) for cracks

  • Check rafters for water spots or leaks

  • Check roof for damaged shingles

6. Rotting

  • Absorption of moisture by the mat at the core of the shingle

  • This is a common problem with organic-based shingles

7. Damaged Flashing

  • Improper installation

  • Drying and cracking

  • Settling of the structure

8. Buckling

  • Wrinkled underlayment

  • Roof deck movement

  • Poor roof ventilation

  • New shingles applied over old shingles

9. Missing Shingles

  • Improper fastening

  • Exposure to high winds

10. Hail Damage

  • Difficult to detect

  • Causes missing granules and roof leaks


If you notice any of these warning signs, call us at (507) 208-0172 or Email Us at weathershieldroofingmk@yahoo.com today for a free estimate!

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