Venting your dryer to the attic is not only a potential fire hazard but can result in moisture problems which causes more problems.
How to insulate dryer vent in attic.
Step 1 wrap pipe in insulation.
Standard duct tape can heat up and fail over time so get the good stuff.
Do not use cloth duct tape for this purpose.
You are then back to sticking the vent to the wall with the brackets and screws.
Use the screws to place the vent cap securely onto the roof.
I even run a strip up the linear joint where the round duct connects to itself.
Cover the pipe in two to three inches of fiberglass insulation.
Track the exhaust pipe from your dryer until it leaves the house.
Attach the roof vent to the duct that is from the top of the roof.
Secure the insulation with hvac duct tape.
You may have to cut through drywall to fully expose the pipe and be able to apply insulation.
You need to insulate the metal duct in a heating climate the current black insulating sleeve will work fine if it s in good shape.
How can i vent it outside to make it less of a fire hazard improperly vented dryers and lint buildup cause over 15 000 fires a year.
Attach the insulation with a high quality reinforced foil duct tape.
To secure it you can then use the caulk to go around the edges of the vent cap.