How to Protect Extension Cords From Rain

We all need extension cords to power our everyday household appliances and electronics. But what happens when rain threatens their working order? Without proper protection, water damage from storms or even heavy dew can leave you with a destroyed cord (not to mention exposed wiring that could create an electrical hazard).

How to Protect Extension Cords From Rain

Fortunately, there are plenty of methods available to help protect your extension cords against the elements. In this blog post on how to protect extension cords from rain, we’ll explore some tips for preserving your equipment while staying safe — read on for more!

What is Extension Cord?

An extension cord is a length of electrical cable with male and female connectors at the ends, used to extend the reach of an electrical device. The most common type for household use is two-wire (16 gauge or heavier), which carries power from an outlet to whatever electronic device you need it for.

Needed Materials

Given below are some materials you’ll need to protect your extension cord from rain:

  1. Weatherproof Sealant 
  2. Electrical Tape 
  3. Cable Sleeve 
  4. Outdoor-rated Extensions Cords 
  5. Waterproof Junction Box 
  6. Cord Storage Bin or Bag

11 Step-by-step Instructions on How to Protect Extension Cords From Rain

Step 1: Apply Weatherproof Sealant

Using weatherproof sealant is the most effective way to prevent water from entering your extension cord. To apply, insert the female end of the cord into a container of sealant and then squeeze out any excess. 

Make sure you cover all openings with the sealant to ensure a tight seal. If possible, let the sealant dry overnight before using the cord again. But if you need to use the cord immediately, make sure that the sealant is completely dry before inserting it into an outlet.

Using Weatherproof Sealant

Step 2: Use Electrical Tape

Put electrical tape over the connector end of your extension cord to ensure that water won’t be able to penetrate it. Be sure to wrap the tape tightly and completely cover all openings. It’s important to note that electrical tape isn’t a permanent solution, so you will need to be sure to check the tape regularly for signs of wear and tear. But if used properly, it can help protect your cord in a pinch.

Step 3: Invest in Cable Sleeve

Cable sleeves are protective covers that can be placed over extension cords to keep them safe from the elements. You can purchase a cable sleeve that is specifically designed for outdoor use. If you opt for a cable sleeve, be sure to check the material and construction of the sleeve before purchasing. But by investing in a cable sleeve, you can help keep your cord dry and safe from the rain.

Step 4: Purchase Outdoor-Rated Extension Cords

There are certain extension cords that are designed and rated for outdoor use, which means they are waterproof and will provide good protection from the rain. Make sure to check the labels when purchasing. But if you already have an extension cord, this may not be a feasible option. If that’s the case, then you can still protect your cord by using one of the other methods mentioned in this blog post.

Step 5: Install a Waterproof Junction Box

Install a waterproof junction box if you need to connect multiple extension cords together or plug them into an outlet in your home. This will provide extra protection from water damage and help keep your connections secure. If you’re unsure how to install a junction box, it is best to hire a certified electrician for the job. This will ensure that your junction box is installed correctly and safely.

Step 6: Store Extension Cords Properly

When not in use, it’s important to store your extension cords properly in order to keep them safe from rain and other elements. Use a cord storage bin or bag, which can be purchased at most hardware stores. If you don’t have a storage bin or bag, make sure to wrap your cords tightly in plastic and store them in a dry area. This will help keep them safe and make sure they are ready for use the next time you need them. Otherwise, they could get wet and be damaged.

Step 7: Unplug Extention Cords When Not In Use  

Unplugging your extension cords before it starts raining is essential if you want to keep them safe and dry. This will also prevent any potential electrical shocks caused by wet wires. If you’re expecting a lot of rain, make sure to unplug your cords and store them away until the weather improves. It’s also important to unplug them when you’re not using them, as this will help keep your cords safe and dry.

Step 8: Lift Extension Cords Off Ground  

Lift your extension cords off the ground when using them outdoors in order to avoid water pooling around them. You can use stakes or other items to prop up the cord and keep it elevated from potential puddles of water.  This will also help prevent any potential tripping hazards. It’s important to remember that the cord should be elevated from the ground, but not stretched too tight.

You Can Use Stakes

Step 9: Choose a Protected Location  

Choose an area that is protected from the elements when plugging in your extension cords, such as under an overhang or inside a waterproof box. This will help shield the cords from rain and other forms of precipitation. If you have to use them outside, choose an area that is out of direct contact with the rain. It’s also important to avoid any puddles of water when plugging in the cords.

Step 10: Inspect Extension Cords Regularly    

Inspect your extension cords regularly to ensure they are in good condition and aren’t showing any signs of damage or wear. This will help prevent potential hazards caused by faulty wiring. But if you do find any signs of damage, make sure to replace the cords right away. This will help keep your cords safe from water damage and ensure they are functioning properly.

Step 11: Use a GFCI Outlet  

Finally, it is important to use a ground-fault circuit interrupter (GFCI) outlet when plugging in your extension cords. This will provide an extra layer of protection against electrical shock and other hazards. It is best to hire a certified electrician to install the GFCI outlet, as this will ensure that it is done correctly and safely.

By following these tips on how to protect extension cords from rain, you can keep your equipment safe while staying safe yourself. Make sure to always take the necessary precautions before using any type of electrical device outdoors and remember that safety comes first!

How Much Could It Cost?

The cost of protecting extension cords from rain varies considerably depending on the type of material you use, how many cords you need to protect and whether or not you hire a professional for installation. 

For example, purchasing electrical tape and weatherproof sealant would likely cost just a few dollars but installing a waterproof junction box could cost anywhere from $50-$100. Ultimately, the total cost depends on what materials and methods you choose to use in order to protect your extension cords from rain.

Frequently Asked Questions

Q: What is the Best Way to Protect Extension Cords From Rain?

A: The best way to protect extension cords from rain is by using a combination of waterproofing methods, such as electrical tape, weatherproof sealant and cable sleeves. You should also invest in outdoor-rated extension cords or install a waterproof junction box.

Q: Are There Any Special Precautions I Need to Take?

A: Yes, it’s important to always unplug your extension cords before it starts raining and store them properly when not in use. Additionally, you should lift the cord off the ground and choose a protected location for plugging in your equipment. Finally, make sure to inspect your extension cords regularly for signs of damage and use a GFCI outlet for extra protection.

Q: What is the Average Cost of Protecting Extension Cords From Rain?

A: The cost of protecting extension cords from rain varies depending on the materials and methods used. Purchasing electrical tape and weatherproof sealant may only cost a few dollars while installing a waterproof junction box could be more expensive. Ultimately, it depends on what you choose to do in order to protect your equipment.  ​  ​ 

Q: Are There Any Alternatives to Protecting Extension Cords From Rain?

A: Yes, you can also use a waterproof cover or an outdoor extension cord reel. However, these methods are only meant to provide temporary protection and should not be used for long-term storage of your extension cords. Additionally, it’s important to inspect the cords regularly for any signs of damage.  ​  ​

Use a Waterproof Cover


Protecting your extension cords from rain is an important part of maintaining indoor and outdoor power sources. Taking the right steps to store cords, buying the correct kind of cord, inspecting them regularly, and using protectors as needed will help ensure that your electric devices remain safe and operational when exposed to light or heavy rains. Don’t forget to unplug extension cords before a storm or while you’re away if it could be raining.

Lastly, don’t forget that all electrical work should be supervised by a professional for safety reasons. Taking the above steps on how to protect extension cords from rain can help you secure a steady power supply no matter the weather conditions – that way you won’t find yourself without electricity even during the most critical times! So make sure you guard your extension cords against rain damage to protect them from more costly repairs.

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