Here's what you might see when you go up on your roof:

• Uplifting or splitting of the roofing membrane (the material that covers the roof) or decking on flat roofs.
• Punctures in the roof caused by debris hitting it.
• Cracking or other age-related deterioration. This is typically most apparent on southern exposures, and especially on wood or composition shingles.
• Damaged roof-mounted vents or air-conditioning equipment.
• Stripped ridge tiles, or missing or broken tiles on concrete or clay roofs.
• Pitting or pock marking on asphalt shingles or membranes. This can be caused by hail or from toxic substances in seedpods.
• Stripped or torn shingles on asphalt, fiberglass, or cedar roofs.
• Algae growth from poor drainage.
• Previous roof repairs.
• Rotted or rusted decking.
• Worn or rusted flashing.
• Wrinkled roofing membrane.
• Holes from missing shingles or other roofing materials.