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roof flashing repair on a chimney

7 Step Roof Flashing Repair (Maintain Your Roof Right)

Roof flashing is an essential component in protecting your home from water damage. Properly installed and maintained flashing can prevent leaks and extend the lifespan of your roof. In this guide, we’ll walk you through a comprehensive 7-step guide for roof flashing repair, ensuring your home stays dry and secure, including:

  • Inspect your roof
  • Gather your materials
  • Remove damaged roof flashing
  • Measure and cut new roof flashing
  • Install new roof flashing
  • Reattach shingles
  • Final inspection and maintenance tips

🤔 Understanding Roof Flashing

Before diving into the repair steps, it’s crucial to understand what roof flashing is and why it matters. Roof flashing is a thin material, often made of galvanized steel, aluminum, or copper, that directs water away from critical areas of the roof. These areas include joints, valleys, chimneys, skylights, and vent pipes. By channeling water away from these vulnerable spots, flashing helps prevent leaks and water damage.

💡 7 Step Roof Flashing Repair Guide

roof flashing repair by a man on a roof

Repairing roof flashing is a critical task to maintain the integrity of your roofing system and prevent water infiltration. This guide provides a concise, step-by-step approach to effectively repair your roof flashing, ensuring your home remains protected from the elements. Follow these seven steps to achieve a durable and long-lasting repair.

1. Inspect Your Roof

Tools and Materials Needed:

  • Binoculars or a drone
  • Ladder
  • Safety harness
  • Flashlight
  • Notebook and pen


  • Visual Inspection from the Ground: Start by inspecting your roof from the ground using binoculars or a drone. Look for any obvious signs of damage, such as missing or warped shingles, rusted or displaced flashing, and debris buildup.
  • Up-Close Inspection: If it’s safe to do so, use a ladder to get a closer look. Ensure you’re wearing a safety harness to prevent falls. Pay special attention to areas around chimneys, vents, valleys, and skylights.
  • Interior Inspection: Check the interior of your home for signs of water damage. Look for water stains on ceilings and walls, and inspect your attic for dampness or mold growth.
  • Document Findings: Note down any issues you find. This will help you plan your repair and ensure you have all the necessary materials.

2. Gather Your Materials

Materials Needed:

  • Replacement flashing (galvanized steel, aluminum, or copper)
  • Roofing nails
  • Roofing cement or sealant
  • Hammer
  • Pry bar
  • Utility knife
  • Measuring tape
  • Tin snips
  • Caulking gun
  • Safety gloves and goggles


  • Assess Material Requirements: Based on your inspection, determine the type and amount of flashing material you’ll need. It’s important to choose the same material as your existing flashing to ensure compatibility and durability.
  • Purchase Materials: Visit your local hardware store or order online. Make sure you have all the necessary tools and roof flashing materials before you begin the repair.

3. Remove Damaged Roof Flashing


  • Safety First: Ensure you’re wearing safety gloves and goggles to protect yourself from sharp edges and debris.
  • Remove Shingles: Using a pry bar, carefully lift the shingles surrounding the damaged flashing. Be gentle to avoid damaging the shingles, as you’ll need to reattach them later.
  • Extract Nails: Remove the nails holding the damaged flashing in place. Use a hammer or pry bar to carefully extract them without causing further damage to the roof.
  • Remove Flashing: Gently pull out the damaged flashing. If it’s stuck, use a utility knife to cut through any sealant or roofing cement.

4. Measure and Cut New Roof Flashing


  • Measure the Area: Use a measuring tape to determine the dimensions of the area where the new flashing will be installed. Measure twice to ensure accuracy.
  • Mark the Flashing: Transfer the measurements to the new flashing material. Use a marker or pencil to outline the area to be cut.
  • Cut the Flashing: Using tin snips, carefully cut the metal flashing along the marked lines. Ensure the cuts are straight and clean to ensure a proper fit.

5. Install New Roof Flashing


  • Position the Flashing: Replace roof flashing by placing the new flashing in position, ensuring it fits snugly against the roof and overlaps the shingles appropriately. The bottom edge of the flashing should extend past the shingles to direct water away effectively.
  • Nail the Flashing: Secure the flashing in place with roofing nails. Place the nails at regular intervals along the edges of the flashing. Make sure the nails are driven in securely but not so tight that they distort the flashing.
  • Seal the Edges: Apply roofing cement or sealant along the edges of the flashing to create a watertight seal. Use a caulking gun to apply the sealant evenly, and smooth it out with a putty knife if necessary.

6. Reattach Shingles


  • Position the Shingles: Lay the shingles back down over the new flashing. Ensure they are aligned correctly with the surrounding shingles.
  • Nail the Shingles: Secure the shingles in place using roofing nails. Drive the nails into the same holes they were removed from, if possible, to avoid creating new entry points for water.
  • Seal the Shingles: Apply a small amount of roofing cement under the edges of the shingles to secure them to the flashing and prevent them from lifting in high winds.

7. Final Inspection and Maintenance Tips

roof flashing on chimney


  • Inspect the Work: Once the flashing is installed and the shingles are reattached, perform a final inspection. Ensure all nails are secure, and the flashing is properly sealed. Check for any gaps or areas where water might penetrate.
  • Clean the Work Area: Remove any debris, old flashing, and unused materials from the roof. A clean work area will prevent potential damage and make future inspections easier.
  • Regular Maintenance: To keep your roof in good condition, perform regular inspections and maintenance, and repair roof flashing when necessary. Check your flashing and shingles at least twice a year, especially after severe weather. Promptly address any issues you find to prevent minor problems from becoming major repairs.

🙌 Trust Kingfisher Roofing for Expert Repairs and Inspections

Maintaining your roof’s flashing is critical to protecting your home from water damage. At Kingfisher Roofing, our expert team follows a meticulous 7-step repair process to ensure your roof remains in top condition, preventing leaks and extending its lifespan. With regular inspections and timely repairs, we save you money in the long run and provide peace of mind knowing your home is well-protected.

Safety is paramount when working on a roof. If you’re uncomfortable with heights or unsure about any part of the process to replace roof flashing, trust the professionals at Kingfisher Roofing to get the job done right. A well-maintained roof is essential for a safe and secure home. Contact us today to schedule an inspection and experience the Kingfisher Roofing difference!

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