CAUSES

• High nails
• Lack of back coating|
• Under-saturation of asphalt felt in organic shingles
• Lack of ventilation
• Improper number of fasteners

RECOMMENDATIONS

• Check location and number of fasteners
• Added roof ventilation can often correct

Office
W224 N7770 Wooded Hills Dr.
Sussex, WI  53089
262-250-0889
Fax 262-250-0887

email:  roofing@adroofingcontractors.com

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