A leaking roof causes more trouble than an annoying “drip drop” from your ceiling; it can damage your attic insulation and roof deck and lead to mold and mildew growth and reduced energy efficiency. Roof leaks can be due to several causes, all of which will require the immediate assistance of a professional roofing contractor.

Here are some common roof leak culprits:

1. Loose, Cracked, or Rotting Shingles: If your roof is 20 to 30 years old, you may see signs of aging such as cracking or rotting. In some cases, the shingles may come loose and fall to the ground. A weakened outer layer will expose the underlayment; continued exposure to wind and sun can wear the layers away and eventually cause leaks to form. If your roof is in such a condition, you need to have it inspected. Greenawalt Roofing provides free roof replacement estimates!

2. Roofing Nails Backing Out: Apart from roofing shingles, roofing nails can sometimes back out. This leaves small holes that water can easily penetrate, especially when it’s close to the roof’s edge where wind-driven rain can enter. These little holes are usually unnoticeable to the untrained eye, but not when you have your roof inspected by professional roofers.

3. Damaged or Dislodged Flashing: Flashing is a piece of metal that protects valleys and any spot where the roof meets a vertical surface, such as walls and dormers. If damaged or dislodged by strong winds, this could leave the breaks in the roof exposed, making it easy for rainwater to get in.

4. Cracked Rubber Boots: Plumbing vents and anything that protrudes from the roof require a rubber “boot,” which works like flashing by protecting the area where it meets the roof. Continued exposure to outside conditions will eventually crack the rubber boot, meaning it needs to be replaced.

Are you seeing these signs on your roof?

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Give Greenawalt Roofing a call at 717-898-6000. We serve Lancaster, PA and surrounding areas.