Use special masonry caulk to seal the joints between the flashing and the chimney.
How to repair roof leak at chimney.
Seal the seam between the cap and step flashing with urethane roofing cement or silicone caulking compound as shown at right.
To repair chimney flashing leaks.
How to fix a roof leak around the chimney chimney cap a new chimney cap may keep water from entering the top of the chimney and help keep critters out flexible roof sealant apply flexible roof sealant black jack roof patch rubberized roof cement from a can or tube to fill holes gaps flashing and loose shingles around the chimney.
If it s sound caulk cracks and gaps with polyurethane.
Apply roof cement to any gaps or cracks.
Inspect the flashing at the top sides and bottom edge of the chimney.
Renew flashing seals by chipping out the old mortar and caulking along the edges of the flashing.
Clean any leaves or other debris out of the gap between the flashing and chimney.
Extend the ladder up so the top rung is at least.
With a person stationed in the attic or inside the house if the attic is inaccessible.
How to fix a leaky roof by a chimney 1.
Inspect the flashing for gaps or cracks.
If portions are missing or bent contact a.
Otherwise hire a chimney builder search online or for chimney builders and repair in your yellow pages or a chimney sweep chimney cleaning certified by the chimney safety institute to evaluate the condition of your chimney and fix it.
If you feel safe and confident about walking on your roof climb up and inspect the crown.
Use a chisel to remove any hardened roofing cement.
Put on work.
Position an extension ladder securely against the edge of the roof.
Use masonry nails or screws to reattach the flashing tight against the chimney.
Once you ve assembled the items you ll need follow these step by step instructions.