How to Vent a Dryer Through the Roof | 12 Easy Steps With Suggested Tools

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A dryer vent is an essential part of a house; it exhausts all moist, warm, and lint laden air outside the home. It protects your home from damage and also prevents fire hazards from lint buildup. Most people prefer to vent the dryer through siding; an upstairs dryer location and brick siding mandate it through the roof. But it’s essential to take precautions to avoid lint build up on the roof. Now you acknowledge yourself to know how to vent a dryer through the roof. It’s quite an easy process once you know how to install a dryer vent through the roofing code. Now I am explaining to you the whole process of venting.

How to Vent a Dryer through the Roof: Tools you will need

For venting a dryer through the roof you will need some tools. Below we have listed all items if you do not have any of them at your home you can get them from the given links.

How to Vent a Dryer through the Roof

For venting a dryer through the roof you just have to follow few steps;

  • Choose shortest routes for the vent
  • Buy products
  • Trace the opening of the dryer vent
  • Making a hole from the roof
  • Connect the vent cap
  • Connect the dryer to the roof
  • Attach the hose to your dryer
  • Connect the hose to the vent hood
  • Secure Insulation
  • Reinforce all joints
  • Secure the vent to the wall with straps
  • Turn on the dryer

Now, let’s dive into details.

Step 1: Choose shortest routes for the vent:

From Basement: If your dryer is in the Basement and the Basement is underground, then duct the rim upside and out the rim joist.

Duct sizeLengthAngle
4inch25 feet90 ̊ turn
12 inch2 ½ feet45̊

The straight path from the Basement:

  • If the dryer is against the exterior wall, then set straight outside the wall. Set the vent 12 inches above the outside ground.
  • For better vent installation, it’s better to keep a shorter distance and fewer turns.

Venting dryer through the attic to the roof:

  • If the dryer is in the interior room, then you can directly install it from the roof and run a dryer vent through the attic.
  • Venting the dryer through the attic to the roof is quite challenging to clean because you have to deal with a bird’s nest, lint dirt, and greases squirrels.

Step 2: Buy products:

  • Once you decide the location now, the next step is to buy a dryer duct, outdoor cap, and all essential tools to install a dryer vent through the roof.

Step 3: Trace the opening of the dryer vent:

  • Trace the opening of the bottom part of a ceiling dryer with a pencil.
  • Drill a ½ inch hole on the outline. Now cut around the outline with a reciprocating saw blade.

Step 4: Making a hole from the roof:

  • Climb on the roof and cut out any shingles still covering the hole.
  • Now spread roofing tar around the hole.
  • Pull the shingles lining at the top of the roof up.
  • Now insert the pipe attached to the vent through the attic.
  • Work the flashing under the raised shingles, and then let them fall onto the flashing.
  • Now leave the lower part of the flashing to rest.
how to vent a dryer in the middle of the house

Step 5: Connect the vent cap:

  • Now nail the vent flashing to the roof with 1 in roofing nails.
  • Cover the edges with tar.
  • In this step, connect the vent cap. On most of the models, it’s just a Snap-On.
  • The elbow of the dryer should be facing in the direction of the roof vent.
  • Now put a 4-inch metal duct elbow on the vent on the back of the dryer.
  • Secure it with a duct clump.
dryer vent through roof code

Step 6: Connect the dryer to the roof:

  • Now connect the dryer to the roof with a 4inch metal pipe.
  • Cut the pipe with tin snips as needed.
  • And fit it together with the fittings.
  • Now you may have to cut a hole in the ceiling over the dryer to run a duct through the attic.

If you have to make a hole then,

  • Make an outline with the pencil in cross-section points on the ceiling.
  • By using a reciprocating saw, cut the outlined area and make a hole.

Step 7: Attach the hose to your dryer:

  • Move your dryer out if necessary.
  • Slide the bottom end of the hose over your dryer’s rear exhaust port.
  • If the connection looks loose, then make it secure with metal foil tape.
roof dryer vent problems

Step 8: Connect the hose to the vent hood:

  • Take the upper elbow piece and slide it over the vent hood cap extension.
  • Cover the seam with foil tape to make it tight; otherwise, use a clamp to tighten it.

Step 9: Secure Insulation:

  • This is almost essential to provide insulation since cold weather causes the hot air in the duct pipe to condense. As a consequence, the condensation causes the lint to collect on the sidewalls of the pipes, resulting in internal pipe blockage.
  • Wrap pipe insulation around the pipe segment to insulate it.
  • Apply metal foil tape to the insulating pipe.
  • dryer exhausting through attic
venting dryer through attic

Step 10: Reinforce all joints:

  • Reinforce all joints with metal duct tape, especially the duct and vent joints.

Step 11: Secure the vent to the wall with straps:

  • Attach the duct to walls or ceilings every 6 to 8 feet with a pipe strap.
  • Loop the strap around the chimney.
  • Don’t screw the strap to it.

Step 12: Turn on the dryer:

  • First, check the out flap is opened.
  • Now plug the dryer in and turn on the dryer.

Problems Caused by Vent a Dryer through the Roof:

  • Water damage: A roof-based dryer vent can damage the roof, leading to leaks and other costly damage.
  • Difficulty cleaning dryer vent: A buildup of lint cause reduce the airflow and limit efficiency. You will need professional cleaners who can clean the lint from the roof or be installed vertically.
  • Moisture drainage: vertical or roof vent makes a small amount of condensation an issue.

How to cope up with Roof Dryer Vent Problems

  • Birds’ nests: With time, birds make a nest in vent holes, which, if you don’t check regularly, can damage your dryer more; it can be dangerous for birds’ lives.
  • Duct cleaning: Duct cleaning improves safety and efficiency. You should inspect the cleaning after every 6 to 12 months.
  • Professional service: Dryer vent cleaning is a professional service.
  • Jet snake: this product is used to clean from the outside. It sends a blast of air backward.
  • The duct should be straight: keep the exhaust duct as short and straight as possible. The long duct can affect the appliance’s operation.
  • Overdrying: Drying time longer can make more buildup on the sides of the wall of the pipe. Overdrying can damage your laundry as well; it is not useful for energy wastage. Use automatic settings on your dryers rather than the timed setting.
  • Lint filters: Lint filters needs to be cleaned whenever you finish each load.

This good habit will improve the dryer’s performance, extend life, saves energy, and minimize fire hazards.

Frequently Asked Questions

Is it OK to vent a dryer through the roof?

A dryer vent is an essential part of a house; it exhausts all moist, warm, and lint laden air outside the home. It protects your home from damage and also prevents fire hazards from lint buildup. Most people prefer to vent the dryer through siding; an upstairs dryer location and brick siding mandate it through the roof. But it’s essential to take precautions to avoid lint build up on the roof.

Venting dryer through the attic to the roof:

  • If the dryer is in the interior room, then you can directly install it from the roof.
  • Venting the dryer through the attic to the roof is quite challenging to clean because you have to deal with a bird’s nest, lint dirt, and greases squirrels.

Can you vent a dryer vertically?

No, venting a dryer vertically is not authentic as it acts as a moisture condenser. The outside air cools the metal sheet; thus, it builds lint around the wall, which forms an increasingly thick layer of lint around the vent surface. It’s reducing the efficiency of the dryer.

Can you vent a dryer indoors?

It depends on you either you want to vent a dryer indoors.

If you vent the dryer into the house, air can be used as a humidity source and a source of heat.

In other cases, venting your dryer indoor can cause mold and condensation problems. In cold weather, homes used more heat and even some more moisture in the air. The low humidity in homes causes dry skin and nasal passages.

Conclusion

To conclude this topic, a good quality dryer can exhaust all warm and moist air outside the home. Venting a dryer is not more challenging if you are venting it on the ground floor or just straight to the dryer. But it becomes more challenging when you vent it throughout the roof. Installation is not causing a hazard, but aftercare becomes more critical for some people who have their busy routines and can’t pay proper attention to the duct regularly. To install, you must have proper knowledge of how to vent a dryer through the roof. I explained to you every process very briefly through which you can vent the dryer.

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