When most homeowners think about roof leaks, they usually blame missing shingles or storm damage. While those are common problems, one of the biggest causes of roof leaks is something many people have never heard of—step flashing.
At The Roof Repair Guys, we’ve repaired countless roof leaks throughout Wilkes-Barre, Scranton, Hazleton, Bloomsburg, and Northeastern Pennsylvania that were caused by failing or improperly installed step flashing. It’s a small roofing component, but it plays a huge role in keeping water out of your home.
What Is Step Flashing?
Step flashing consists of individual pieces of metal installed where a sloped roof meets a vertical wall, such as the side of a chimney, dormer, or second-story wall.
Each piece overlaps the shingle below it, creating a stair-step pattern that safely directs rainwater away from vulnerable areas. When installed correctly, step flashing works together with your shingles to create a watertight seal.
Why Does Step Flashing Fail?
Several issues can cause step flashing to stop doing its job:
- Improper installation during the original roof installation
- Corrosion from years of exposure to the elements
- Nails placed in the wrong locations
- Loose siding or wall materials allowing water behind the flashing
- Storm damage or shifting building materials over time
Unfortunately, these problems often remain hidden until water begins entering your attic or walls.
Warning Signs of Step Flashing Problems
Because the flashing is partially hidden, homeowners may not notice an issue right away. Some common warning signs include:
- Water stains on interior walls near roof intersections
- Ceiling stains after heavy rain
- Damp insulation in the attic
- Mold or mildew odors
- Rotting wood near exterior walls
- Leaks that seem to appear only during wind-driven rain
These symptoms often point to flashing problems rather than damaged shingles.
Why Proper Installation Matters
Even brand-new shingles can’t prevent leaks if the flashing underneath wasn’t installed correctly.
Unfortunately, some roofing contractors try to save time by using one long piece of metal instead of properly installing individual step flashing pieces. While it may look acceptable from the ground, this shortcut can allow water to travel underneath the roofing system.
Professional flashing installation requires careful layering so every piece works with the shingles to direct water safely off the roof.
Protect Your Home Before Small Leaks Become Major Repairs
A small flashing leak can eventually lead to damaged drywall, wet insulation, mold growth, and even structural wood rot if left untreated.
Routine roof inspections allow small flashing issues to be repaired before they become expensive interior damage. This is especially important in Northeastern Pennsylvania, where snow, ice, heavy rain, and freeze-thaw cycles put extra stress on roofing systems every year.
At The Roof Repair Guys, we carefully inspect roof flashing—not just shingles—to identify hidden leak sources and provide long-lasting repairs.
If you’ve noticed water stains or suspect your roof may be leaking, don’t wait until the damage spreads.
Contact The Roof Repair Guys today at (570) 332-1223 or email office@theroofrepairguys.com to schedule a professional roof inspection anywhere in Northeastern Pennsylvania.