Start by disconnecting the dryer vent from the vent hood stub pipe.
How to open dryer vent on roof.
A better roof termination.
Dryer vents should always be vented through the side of the house and not vented through the roof and ideally the exit should be fairly close to the ground.
There should be clamps that connect the exhaust pipe of the dryer to the vent.
You should be able to use your screwdriver to remove the screws holding the vent in place.
Use a screwdriver to release these so that you can vacuum.
Once you have done this the vent cover should come off easily.
Then go outside and remove any siding trim pieces from around the vent hood.
This may lead to leaks and other costly damage.
Go to the back of your dryer moving it if necessary.
You can put the tube of the vacuum directly up the vent.
When it does a roof based dryer vent can contribute to damaging the roof.
Dryerjacks are the first roof vents designed to meet the more stringent venting requirements of dryer exhaust systems.
Before climbing up to the roof get behind the dryer to vacuum out the vent.
Difficulty cleaning dryer vent.
Next remove the vent hood retaining screws and pull the vent hood and stub pipe out of the wall.