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Can You Vent A Dryer Through The Roof

How To Prevent Dryer Vents On The Roof From Clogging

Can You Vent Clothes Dryer Vent Dangers through the Attic and top of the Roof Episode 120

As we mentioned previously, the best thing to do is to prevent your rooftop dryer vent from clogging in the first place.

Not using a screen will help airflow go through the vent easier and reduce clogging risks. The cap of the dryer should be enough to keep birds out and still allow the lint to escape your system.

Long drying cycles also facilitate clogging. It is a lot more efficient to run your dryer in cycles of 30 to 40 minutes and give it a break before you restart it. Long drying cycles increase moisture levels and attract more debris as well as more lint, creating the perfect conditions for clogging.

Dont Vent Your Clothes Dryer Through The Roof

As soon as Im in charge, there will be no more venting of clothes dryers through the roof. I think the roof is a stupid spot to terminate clothes dryer vents because its difficult to clean and its a major contributor to ice dams. Clothes dryers should be vented through the side of the house, preferably within reach from the ground.

How Tall Of A Roof Do You Need For A Dryer

Less than 5 1/2 above ceiling level, it is also invisible for minimal visibility. For areas with moderate snowfall and/or higher profile tiles, choose the larger 486, which is just as effective but larger. Like the dryer, all dryers in America are made from durable materials that look great and are easy to install.

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Can A Dryer Vent Be Directed Upward

Installing a dryer vent involves many choices, from materials and tools to the path your ducting will follow. In many cases, these choices will be determined by the location of your dryer and any existing ducting. If you are starting from scratch in a new location or replacing old ducting, however, the sky is the limit—literally. You can direct your dryer vent upward to reach a horizontal connection or extend all the way to, and through, your roof.

Clothes Dryer Exhaust Duct Vent Hood Types

Dont Vent Your Clothes Dryer Through the Roof

Above: an angled clothes dryer exhaust vent hood. Two other types: a box hood that is quite similar, and a louvered hood are also provided.

Watch out: we have found serious and chronic lint clogging of louvered dryer exhaust vent hoods IF the hood uses multiple louvers that are small in width.

Above: I’m checking a two-louver dryer wall vent hood that is somewhat resistant to lint clogging.

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Neighbors Are Close By

If your property is in close proximity to others, then roof ventilation will in all likelihood be better than venting through the wall. This is because wall ventilation, in this instance, could cause your dryer to vent directly into your neighbors property, to the point where they may even smell the fumes inside there home.

If youre living in a townhome, where the buildings are often adjoined, then its quite likely wall ventilation will not even be possible. Therefore, venting the dryer through the roof will be the only feasible option in this instance.

No Other Access To The Exterior

If theres no other way to reach the homes exterior, then venting through the roof will be necessary. Say, for example, you have a laundry room thats in the interior part of your home. If its more than 35 feet away from all exterior walls, then venting through the roof will be best. This is because most homes have the space for vertical ductwork construction, and in a lot of cases the ductwork will be out of sight and out of mind.

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Ensuring Roof Venting Is Up To Code

As was mentioned earlier, the International Residential Code endorses roof venting, which isnt that much of a surprise considering its been found to be an effective way of eliminating moisture thats the result of clothes-drying. But just because roof dryer venting is endorsed doesnt mean you can set up any kind of dryer vent installation and call it adequate.

Your system will need to be in line with local building codes, and youll also want to have certified dryer exhaust technicians oversee the installation. These experts will also make sure your system is maintainable, and this is important as a dryer vent system can last a couple decades if its taken care of well.

Difficulty Cleaning Dryer Vent

DryerJack, Roof Vent for Clothes Dryers

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. Keeping a clean dryer vent is much easier when you can safely reach the exit. These terminals need to be cleaned on a regular basis to prevent lint buildup.

A buildup of lint can cause reduced airflow and limit the efficiency of your dryer. If this goes unchecked for too long it becomes a fire hazard. Cleaning a dryer vent isnt normally too complicated. You simply need to pull the lint out. This can become difficult if the system is especially complicated, or if the vent is vertical and requires roof access. Your home may require professional dryer vent cleaning from dryer vent specialists, especially if the vent is on the roof.

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Clothes Dryers That Vent Into The Crawl Space

Our second clothes dryer vent exhaust mistake is shown above: the installer hung the vent opening at the crawl space vent screen.

Not only did lint clog the crawl space vent, but most of the damp dryer exhaust air soon was being spilled into the crawl space ceiling.

Special provisions for dryer venting in mobile homes

Above: a clothes dryer exhaust vent installed in a mobile home can be vented down through the crawl space and outside through the skirting wall, but must never be vented to terminate right in the crawl space.

Exhaust vent must be securely fastened to a noncombustible portion of mobile home and must not terminate beneath the mobile home. Terminate exhaust vent outside.

Dryer Vents Through The Roof

I have noticed a trend in new construction which is gaining in popularity. That is to install dryer vents through the roof. This is a practice that really rubs me the wrong way.

Why am I so disapproving? Many reasons!

  • Out of sight, out of mind. My dryer vents under my rear deck. I see it all the time. As I see it I check it for build up of lint or bird nests. It isn’t out of mind.
  • It’s up on the roof! It is often very far away and hard to see. If people can’t see it clearly how can they be diligent about checking to see if clogging is happening?
  • Dryer vents need to be cleaned regularly! Somebody has to schlep up there and clean it!
  • If the laundry room is on the bedroom level, which a lot of people really like, why not vent it out the side? It is easier to see and get to. Sure it might be high, but certainly not as difficult to access as one through the roof.
  • When we have deep snow falls, which happens a lot, somebody better be really careful to make sure the vent is free and clear prior to turning on the dryer. Dryers are known to overheat!
  • To me this is all a big duh! But apparently not to architects and builders. I don’t understand the trend. I consider this to be a safety issue!

    This is the most common design of what I am seeing lately.

    There are many variations of this, to be sure.

    So, when I see one venting through the roof, I go through my little spiel of the downsides of such installations.

    My clients understand and are grateful for the head’s up!

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    Five: Putting A Hole In The Attic Floor

    Once the exterior components have been secured, the next step is drilling a hole in the attic floor, as through this hole the pipe passes on its way to the dryer below. You may need to cut a hole through multiple floors to accommodate the pipe, or it may be in a location that requires only one cut before the dryers location is reached.

    The tracing procedure addressed above should be followed every time a hole needs to be cut in the floor/ceiling. Taking precise measurements here is essential, as all the holes must line up perfectly to ensure the pipes path to the dryer is not obstructed.

    Can Dryer Vent Through Roof

    What To Do If You Have a Dryer Vent On Your Roof

    Dryer ventsthroughthroughroofdryer ventdryer ventventroof

    . Hereof, can a dryer vent go up through the roof?

    Through the roof, of course. Most of the time. This arrangement will work fine at first, but just like dryer vents that go through the side of the house, the terminal will eventually get clogged with lint.

    Beside above, how long can dryer vents be? The maximum developed length of a clothes dryer exhaust duct shall not exceed 35 feet from the dryer location to the wall or roof termination. The maximum length of the duct shall be reduced 2.5 feet for each 45-degree bend, and 5 feet for each 90-degree bend.

    Keeping this in consideration, can you run a dryer vent through the attic?

    The International Residential Code allows you to run a dryer vent through the attic, but you can‘t terminate it there. Doing so would fill your attic with warm, moist air that could rot the framing and ruin the attic insulation, and lint from the dryer could create other problems.

    What is the code for dryer vents?

    It is better to join the pipes with foil-backed duct tape. The vent should be as straight as possible, and the code sets a limit of 25 feet on its length. If you have to install bends, you should reduce this limit by 5 feet for every 90-degree bend and 2 1/2 feet for every 45-degree one.

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    Is My Exterior Wall Large Enough To Vent Directly To The Outdoors

    If you answered no to option 1 or 2, or if your area doesnt have an enclosed outdoor area, venting may need to be installed indoors through an open window and vent all the way up out of a vent hood on your roof. This is fine as long as theres adequate ventilation in that room already . Some homeowners choose not to vent inside at all but install an exterior vent hood with a vent cap instead. This will keep out bugs and still vent moist air.

    Maintenance Of The Dryer Vent

    There has always been a recommended step by step process for maintaining your dryer vent. As with anything in your home, it is important to be proactive in your maintenance on a daily basis. This will reduce any future issues that might arise.

    The most important thing that you can do is to check the lint grate on your dryer. Do this before you run any laundry to dry. You can clear this lint trap very easily and it will save you a huge headache moving forward.

    Its also important to vacuum around the dryer to make sure no extra particles can get into the vent or potentially start a fire. If you notice a fire starts, shut off the electricity immediately.

    Use one dryer sheet at a time, as they release chemicals into the dryer vent. Lastly, it is recommended that you air dry sheets and pillows so that they dont produce more lint that can attach to the dryer vents.

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    Cleaning A Roof Dryer Vent

    It is close to impossible for one to own a clothes dryer minus a laundry machine. Yet, thats how much our lives are dependent on technology.

    The amount of laundry you do depends mainly on the number of people in your household and childrens presence. Children need a change of wardrobe more frequently than adults do.

    The more the laundry, the more the lint, and this will determine how often you do maintenance around your home.

    Why Is This Dangerous

    What To Do If You Have a Dryer Vent On Your Roof- Field Video #27

    First of all, that could be a fire hazard. Your dyer is pushing heat through the lint. Plus, its going to cause your dryer to work harder, making it less effective and shortening its service life.

    If its possible to get the vent off of the roof and out a sidewall, lets get that done. Have a plumber, an HVAC company, or a duct guy get that off of there and then we can change the roof line and close off the top.

    If the vent cant be changed, then maintenance needs to be a priority. The roof should be looked at once every two to three years to make sure that its not plugged at the top. And have a duct-cleaning company, or an HVAC company, clean that thing out on a regular basis.

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    How Far To Run Dryer Vent In Wall

    The dryer exhaust guidelines in International Housing Code section M1502 specify that the dryer’s exhaust duct from the dryer to an exhaust vent in a room, wall, or ceiling must not exceed 25 feet. However, only 25 feet is indicated if it is a straight line from the dryer to the outlet, which is rare.

    How Can I Vent This Dryer

    Removing air from the electric dryer without external access Connect the dryer vent hose to one of the clips on the back of the electric dryer. Connect the other end of the drying hose to the ventilation box with another clamp. Place the fan cage in a safe place so it won’t tip over or get in the way, but you can reach it to clean it.

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    The Importance Of Dryer Vents

    Whether you have a gas or electric dryer, if your dryer can exhaust air outside of your home it should be vented. Venting the dryer eliminates the moisture from the clothes so that they dont mildew and rot in humid conditions. This is important for health and safety reasons on top of just being gross. Installing a vent also will significantly reduce drying time because moist air is not being recycled through the clothes instead of flowing out.

    Laundry lint that is left to build up inside a dryer vent can result in higher energy bills due to more frequent drying cycles, reduce the efficiency of heating appliances , shorten equipment lifespan, increase fire hazards and potentially damage the internal components of the appliance or ventilation system.

    Can I Vent Dryer Out Of Soffit


    Dryers can be vented through the soffit if it is not prohibited by the manufacturer. All other dryer installation regulations provided in the IRC must also be met. Notably, the dryer vent must not be within 3 ft of an opening into the building, including passive soffit vents. Never vent into the soffit.

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    Can You Vent A Dryer Through The Roof

    It is not advisable to vent a dryer through the roof. This is one of the most common mistakes we see from people who are not experienced with air ducts. Dryer vent specialists will tell you that a vertical approach to installing a dryer vent is inefficient and creates a fire risk for a home if it goes unchecked. Here are some things to look for and why the roof is not the smart choice when venting your dryer.

    How Long Should Your Dryer Vent Line Be

    The dryer discharge pipe should be as short as possible. Long, multi-curved vents restrict airflow, often to the point that the dryer outlet doesn’t even reach the outlet. The dryer exhaust guidelines in International Housing Code section M1502 specify that the dryer’s exhaust duct from the dryer to an exhaust vent in a room, wall, or ceiling must not exceed 25 feet. However, he is 25 feet tall.

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    S For Installation Of Dryer Vent Through The Roof

    Even if installing your dryer vent through the roof is not the best option, in some cases, it might be the only option you have. And since you want to install your roof dryer vent, it is essential to install it the right way because you want to avoid any additional issues such a system might give you. So here is how to install a dryer vent through the roof the right way!

    Wall Venting Is Visually Unattractive

    Can my dryer vent go through the roof? | Sharpe Roofing University

    If venting through the wall causes your home to be visually unattractive, then venting through the roof will be a better option. Roof ventilation is not uncommon after all, a chimney is a ventilation device, and these are found on virtually all homes. If things can be situated so that your chimney and dryer vent are in close proximity, then you wont have to worry as much about dryer ventilation causing your home to be an eyesore.

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    Can You Vent A Dryer Directly Through The Roof

    If you have a dryer in your home, youll need a vent to evacuate all of the air and lint from the machine. Dryer vents usually go out a side vent in a building. However, some people dislike this design and wonder whether you can vent a dryer through the roof.

    You can vent a dryer through a roof. To do this, a vertical dryer vent will need to be installed in the building. This vent can meet a horizontal connection to reach a vent on the side of the building. Alternatively, it can go through to the roof to allow air and lint to escape.

    Keep reading to learn more in detail about venting your dryer directly through the roof. We will also explore vertical venting from a dryer, the expenses involved in venting your dryer through the top, and the advantages of choosing horizontal and vertical dryer vents.


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