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.
Pros and cons of dryer vent thoguh roof.
Clothes dryers should be vented through the side of the house preferably within reach from the ground.
The problem i see with exausting the air through a soffit vent is that the natural flow is going to tend to pull that moist air right back in through the soffit vents and into the attic again.
They balance out the temperature of the home.
Vents provided for the bath fan are smaller and feature a screen a major no no for dryer venting.
The warm moist air inside the vent tends to condense on the colder walls of the pipe and the water droplets catch lint which also gets wet and sticks to the pipe.
When you have a new home built or you re replacing a roof then installing a ridge vent helps to balance out the transfer of hot and cold air.
The less back pressure is created by the roof vent the more efficiently the system performs.
With that the roofer commonly installs the dryer vent at the wrong penetration.
I think the roof is a stupid spot to terminate clothes dryer vents because it s difficult to clean and it s a major contributor to ice dams.
I am basically just giving you the full scope of my experience with this method of money saving that i have been doing for the last couple of months.
List of the pros of roof ridge vents 1.
Position the outdoor vent opening at least 1 foot above the ground to allow for air circulation and to keep the vent clean.
For a dryer in the basement run the duct upward then horizontally along the ceiling joist to the outdoors.
Although it s typically not advised some homes come with a dryer vent system that is designed to vent inside rather than outside.
If that won t work vent it through the nearest exterior wall.
Lint stays attached to your clothing until it goes through the dryer.
Proper venting means no lint backup which can cause dryer fires.
When possible it s always best to vent outside in order to prevent potential.
A home s roof gets exposed to all the elements.
A cap is needed for prevention of anything entering the vent which should not.
Avoid running the vent out through the roof.
The lint eventually builds up.
When bath fans and clothes dryers vent through the roof they melt a bunch of snow.
Pros and cons of venting a dryer vent inside.
So i am going to break dryer venting into some categories for you so that if you only want to know the pro s or con s or whatever you can skip ahead.
In new construction a roof vent hood generally referred to as a roof jack designed for the dryer looks almost identical to the one used to vent a bath fan.
