The position and curvature of the damper combined with hood size and collar placement optimize airflow to such a degree that laboratory tests confirm nearly zero reduction in airflow.
Remove dryer vent hood on roof.
Remove the guard to the dryer vent on the roof.
Next remove the vent hood retaining screws and pull the vent hood and stub pipe out of the wall.
Here is a link that might be useful.
Here s how to replace your existing vent hood with that style.
Cut the new vent pipe to the same length as the old one then slide it through the wall.
You can remove some of this with your hands.
Good efficiency pressure testing videos on youtube.
You might find that there are gobs of lint stuck on in.
Now it is time to remove the vent cover near your dryer so that you can clean out any debris that has accumulated inside.
Go in the attic find the dryer vent pipe and follow it to the roof.
Then go outside and remove any siding trim pieces from around the vent hood.
At this point now that your dryer is not connected to any power sources it is safe to work on your dryer vent.
When you get on the roof you should find that the vent is covered by a guard.
If you can remove it.
Start by disconnecting the dryer vent from the vent hood stub pipe.
Go to the back of your dryer moving it if necessary.
Venting a clothes dryer up and through the roof has been a popular practice in the south for some time as most homes are on a concrete slab and the laundry r.
Next remove the screws or nails used to attach the cap to the siding and cut through the caulk around the edges photo 1.
If you see a pipe clamp attached to the pipe just under the roof loosen it with a screwdriver and remove it.
Pull out the dryer vent cover scrape away old caulk and dirt and then wipe the siding clean so new caulk will stick.
Step 2 remove the dryer vent cover.
The new dryerjack is the most efficient.