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.
Standard dryer vent on roof.
Since many laundry rooms are located in the middle of the house and so many homes are single story with easy to walk on roof slopes about 6 12 venting the dryer to the roof makes the most sense shortest run with least amount of elbows.
Cleaning lint buildup from roof vents is difficult and nesting birds and squirrels often find roof vent caps irresistible.
Duraflo 6013ww roof dryer vent flap with att collar weatherwood.
Insert the duct pipe on the vent hood through the hole.
Unlike the vents shown above left the dryerjack affects airflow by less than 01 water column inches of pressure.
These terminals need to be cleaned on a regular basis to prevent lint buildup.
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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.
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Keeping a clean dryer vent is much easier when you can safely reach the exit.
Position the assembly so that the opening faces toward the ground.
Secure the dryer vent hood to the siding on the home s exterior using wood screws for masonry homes use appropriate anchors instead of wood screws caulk around the edges of the.
Check with your appliance dealer or local building inspector for recommendations about the best roof vent cap to use.
Vent a dryer through the roof only as a last resort.