This case is a textbook warranty of habitability issue.
Venting marijuana through the roof.
Line ducting straight up with the exhaust fan and duct tape it on securely.
Smoke from an illegal substance coming in through the vent will win this case in favor of the tenant in about 5 seconds.
For the best results the vent should terminate through a gable wall of the roof assembly for best results.
Go into your attic.
Considering that back pressure higher than 6 wci is generally recognized as inefficient you can see that venting through the roof with non dryer specific vents is immediately problematic.
Position the vent pipe up to the bottom of the roof.
The penetration will be oval to have a round pipe exit vertically through a pitched roof you need an oval hole in the roof.
Vent your bath and kitchen exhaust fans through the roof through a special roof hood.
The new dryerjack is the most efficient.
Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.
With the pipe in a vertical position trace around the pipe using a pencil.
Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.
This will require slipping the flange under the roofing shingles.
You can attach a carbon filter to your extractor fan and suspend it from the roof too.
On the roof slip the roof vent boot over the protruding pipe to be sure of the fit.
The less back pressure is created by the roof vent the more efficiently the system performs.
Hot air exhaust vents located at the peak of the roof allow hot air to escape.
Keeping a clean dryer vent is much easier when you can safely reach the exit.
Vent terminations through roofs or soffits should be avoided whenever possible.
Install the roof vent boot so that water will flow over it where it meets the roof.
These terminals need to be cleaned on a regular basis to prevent lint buildup.
Document date s and time s.
Install the pipe securing each joint as needed.
Then run more ducting through the hole in the tent without any bends if possible.
The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.