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Leak in roof at addition

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May 7, 2025 at 9:22 p.m.

HannahFord7

Michael from Kansas asks: I have an addition that was built onto my home. Where the existing roof hits the addition, water collects and leaks into the walls of the addition. What sealer should I apply to the seam where the roof meets the vertical wall of the addition?
where the angled roof meets the vertical wall, it is leaking into the wall. I need to seal the area but want to make sure I’m using the right thing

May 7, 2025 at 9:23 p.m.

HannahFord7
Hi Michael,
 
Henry Staggs said this in response to your question:
 
At a roof to wall abutment there should be a flashing. If it’s the head wall, we need a base and counter flashing. 

If is the rake wall and the roof is shingled. We need step flashing and a counter flash.

If it’s tile then we need a pan flashing and counter flash. 
 
Thank you for your patience on this answer! If you click his name above it will take you to his directory which has direct contact information if you'd like to follow up with him.
 
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