How to Clean Window Weep Holes

Are you dealing with a leaky window? If you are, then chances are the culprit is clogged weep holes. Weep holes are drainage openings that allow moisture to escape from the frame of a window.

How to Clean Window Weep Holes

If you’re looking to give your windows a cleaner, more finished look, consider adding window weep holes. These small slots in the frame of a casement or double-hung window allow excess water and condensation to drain away from the interior walls and flooring in order to keep your home comfortable and dry.

Whether you’re an avid DIYer or new to crafting, learning how to clean your window weep holes can save time, money, and effort as compared to needing future repairs due to proper maintenance now!

Keep reading on for step-by-step instructions on how to clean window weep holes so that these essential pieces have plenty of room for air movement around them.

What Are the Benefits of Cleaning Window Weep Holes? 

Cleaning your window weep holes has a number of benefits, such as:

  1. Preventing mold growth.
  2. Maintaining a dry environment in your home to keep mold spores from thriving.
  3. Lower the air temperature inside your home by improving ventilation.
  4. Allowing condensation to escape and drain away, preventing it from collecting on windowpanes and glass surfaces as well as interior walls and floors right below them.

These are just a few of the benefits of keeping your window weep holes clean and clear.

What Will You Need?

To get started, you will need:

  1. A vacuum cleaner with a long and thin attachment
  2. An old toothbrush or pipe cleaner
  3. A solution of one part white vinegar to three parts water in a spray bottle
  4. A soft cloth for wiping down the area after cleaning it out
  5. Gloves and eye protection (just in case)

Now that you have all of the materials necessary, you can start cleaning your window weep holes.

10 Easy Steps on How to Clean Window Weep Holes

Step 1. Vacuum Out the Weep Holes

Use the vacuum cleaner attachment to suction away dirt, dust, and debris that might be clogging up these important openings. If your windows are particularly dusty, you may need to take a few passes at the weep holes to get them as clean as possible. This is an important step, as dust can prevent the weep holes from draining properly.

Use the Vacuum Cleaner Attachment

Step 2. Rinse Out the Weep Holes

Once the weep holes are free from dirt and debris, use the vinegar-water mix in your spray bottle to rinse them. Be sure to get the sides of the opening and any other crevices around it. If your weep holes are very clogged, you may need to use an old toothbrush or pipe cleaner to scrub away any remaining debris.

Step 3. Brush Away Debris

Using an old toothbrush or pipe cleaner, brush away any stubborn pieces that may still be lodged in the weep hole openings. This will help ensure that these important drainage slots are completely free of obstructions before moving on to step four. Additionally, it will ensure that moisture can escape and drain away properly.

Step 4. Rinse Again with Clean Water

After brushing out all of the debris, give the weep holes another thorough rinse with clean water from a hose or bucket to remove all traces of dirt and vinegar solution. You can also use a soft cloth or brush to wipe away any remaining debris. This will help keep your window weep holes free from dirt buildup and ensure that the openings remain unblocked.

After Brushing Out All of the Debris

Step 5. Vacuum Once More

Use the vacuum cleaner attachment again to go over the weep holes and clean up any remaining dirt or debris. This will help ensure that all of the dust and dirt has been removed from the area so that it can function properly. Additionally, it will help prevent any dirt buildup from occurring in the future.

Step 6. Allow Weep Holes to Dry Thoroughly

Give your window weep holes plenty of time to dry before you move on to step seven. This is an important step in ensuring they are free from moisture so they can work correctly when needed. Don’t forget to use a soft cloth or brush to wipe away any water droplets that may have been collected in the area.

Step 7. Check for Obstructions Around Weep Holes

Once your weep holes are completely dry, look around them and ensure that nothing obstructs them from doing their job. This could include anything from dirt, leaves, and debris to rocks and pebbles. If you find any of these items blocking the way, be sure to remove them before proceeding.

Step 8. Apply Caulk Around Weep Holes (optional)

If desired, apply caulk around the weep holes in order to keep water out and give a better seal between the window frame and your home’s exterior. This is unnecessary but can help ensure proper protection against moisture buildup inside your home. It will also help keep bugs and other pests from entering your windows through the weep holes.

Apply Caulk Around the Weep Holes

Step 9. Check for Proper Drainage

After everything has had time to dry thoroughly, check for proper drainage by running a hose over the weep holes for a few minutes. This will help ensure that they are functioning properly and assure that your windows can properly ventilate and protect against water damage. If you find any issues with the drainage, be sure to address them immediately.

Step 10. Wipe Down Area

Finally, use a soft cloth to give the area around your window weep holes one final wipe down. This will keep the area looking neat and tidy and prevent dirt from accumulating in the future. Remember, keeping your weep holes clean is the best way to ensure that they remain functional and help protect against water damage in your home.

Congratulations! You have now successfully cleaned your window weep holes and can enjoy all of their benefits without worrying about moisture buildup or other issues related to poor ventilation. With these tips, you can easily maintain clean windows throughout the year!

5 Additional Tips and Tricks

  1. When you open your windows, clean the weep holes. This ensures that no dirt or debris accumulates in them, which can affect how they work.
  2. Regularly inspect the weep holes for any signs of damage, such as cracks or chips. If you notice any, it is essential to get them fixed by a professional before further wear and tear can occur.
  3. Window weep holes should be kept clear of dirt and grime at all times – use a damp cloth with warm water to wipe away any residue from around them.
  4. For tougher stains, try
  5. designed for window frames, making sure to follow the instructions on the bottle carefully when applying it.
  6. If you notice any water accumulating around the weep holes, make sure to take action immediately. This could be a sign that the weep holes are blocked and need to be cleared ASAP so as not to cause further damage.

By following these tips, you can ensure that your window weep holes remain in top condition and do their job effectively for years to come. Regular maintenance and inspection are key, so don’t forget to give them some love occasionally!

5 Things You Should Avoid

  1. Never use harsh chemicals such as bleach or ammonia to clean your window weep holes, as these can cause corrosion and damage the surface.
  2. Don’t forget to replace any worn weather stripping around the windows when necessary. This will help keep moisture away from the window frames and prevent it from getting into the weep holes.
  3. Avoid using a pressure washer directly on window weep holes, as this could force dirt deep inside them, which will be hard to remove later on.
  4. Be sure not to leave any debris in the area surrounding your windows – this could easily end up clogging up the weep holes and impeding their function.
  5. Don’t neglect regular inspections of your windows, and don’t ignore any potential issues you may find. Taking action as soon as possible will save you time and money in the long run!
Avoid Using a Pressure Washer

By following these guidelines, you can make sure that your window weep holes stay clean and free from blockages or damage. A little bit of maintenance every now and then goes a long way!


Now that you know how to clean window weep holes, it’s time to get creative! Use the grime and dirt scraped off your windows and turn them into a craft item. You can use them to embellish pottery, paint on canvas, or make mosaics.

With just basic cleaning supplies and a few hours of creativity, you can turn that wretched window weep holes into beautiful works of art. Your friends won’t want to miss out on this opportunity, so encourage your friends and family to join in on the fun too! You never know what kind of creations you might come up with, and it just might spark your next artistic endeavor.

Window weep holes don’t need to be something we dread; let’s make them something we celebrate!

Photo of author

Jennifer Branett

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