Roof flashing around chimneys can separate from the brick, allowing rainwater to leak inside the house. To repair loose roof chimney flashing:

  1. Clean any leaves or other debris out of the gap between the flashing and chimney.
  2. Use a chisel to remove any hardened roofing cement.
  3. Apply a generous amount of roofing cement behind the flashing.
  4. Use masonry nails or screws to reattach the flashing tight against the chimney.
  5. Cover any exposed nail or screw heads with roofing cement.
  6. Apply roofing cement to the joint between the flashing and brick.
  7. Smooth the roofing cement out with a paint stirrer or putty knife.

Watch the video above to find out more.


The “L” shaped flashing that protects the joint between a roof and a chimney can sometimes pull away from the chimney, especially if it’s only held in place by roofing cement. Begin correcting the problem by removing any leaves or debris from the void, and then scraping or chiseling the dried roofing cement off of the bricks so the flashing will lay flat against them.

Now, apply a generous amount of new roofing cement to the bricks behind the flashing an inch or so below the top of the flashing. Use masonry screws or nails to hold the flashing tight against the bricks before you apply more roofing cement along the top edge of the flashing.

Finally, smooth out the cement with a putty knife, and apply cement to the heads of all the fasteners.

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Danny Lipford


Danny Lipford is a home improvement expert and television personality who started his remodeling business, Lipford Construction, at the age of 21 in Mobile, Alabama. He gained national recognition as the host of the nationally syndicated television show, Today's Homeowner with Danny Lipford, which started as a small cable show in Mobile. Danny's expertise in home improvement has also led him to be a contributor to popular magazines and websites and the go-to source for advice on everything related to the home. He has made over 200 national television appearances and served as the home improvement expert for CBS's The Early Show and The Weather Channel for over a decade. Danny is also the founder of 3 Echoes Content Studio,, and Checking In With Chelsea, a décor and lifestyle blog.

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