Push foam backer rod into deep gaps then caulk all around with acrylic caulk.
Install a roof dryer vent.
Insert the duct pipe on the vent hood through the hole.
Trace the opening of the bottom section of a rooftop dryer vent on the inside of the roof with a pencil working from the attic.
Install the vent cap.
Insert the vent and screw the cap to the house predrill screw holes.
Drill a 1 2 inch hole on the outline insert the blade of a.
Position the assembly so that the opening faces toward the ground.