Leak within twin wall

This won’t doo

New Member
Jun 30, 2020
today we had a leak coming in through on to a log burner fitted by a company in Southampton ,
when we removed the fire to have a look we found the water was coming in via the small locking lugs in side the twin wall and on the video you can plainly see it dripping through , see video

all you log burner installers , out there can you give any explanations for this , we have removed the twin wall from the saddle through the roof and checked all joints but it’s getting in between somewhere , any help would be appreciat
360A83CB-A293-4EC8-A7F4-287103615317.jpeg CFEDB54B-EE8B-4DF3-A2E1-EA851A726549.jpeg
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Staff member
Nov 18, 2005
South Puget Sound, WA
The bottom of the flashing looks wrong. It should overlap the shingles at the bottom. It looks like instead is may form a dam. If the gutter to the right is dumping water in this same location then it could create a problem.