How To Stop Water From Coming Under The Garage Door

How to Stop Water From Coming Under the Garage Door

Huge rainfall or natural disasters can happen anytime and will heavily affect and even damage your home. One of the areas of your home that will be heavily affected is your garage as the water will slowly creep up into your garage door and flood the place.

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In order to avoid this, you need to create seals and drainage systems that can easily prevent and redirect the water that might enter through your garage door.

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Here, we’ll show you a quick step-by-step guide into how you’re able to keep water from entering your garage.

Steps to Stop Water from Entering Your Garage

It’s important to take the necessary steps to prevent water from entering under your garage and prevent any chance of flooding. Once you follow these steps, you’ll be able to have a safer garage and you’ll also minimize the chances of damaging the stuff that you’ve stored inside it.

Step 1

Check the drainage that’s surrounding your driveway and garage in order to prevent flooding. See if there are any issues with how water travels from your garage and if there are any options to minimize the water from getting stuck inside your garage. 

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A good option if there isn’t any drainage at your driveway is to install Trench Drains in front of your garage doors so the water will redirect from your garage to drainage.

Step 2

Check the foundation to see if there are any problems that may cause water to enter your garage. If there are any cracks found in the foundation in your garage then it may become a leakage problem and can cause further damage in the future.

It’s best to quickly seal up these cracks so that it won’t spread further which can destroy the foundation in your garage so you won’t have to do major repairs.

A good option for this is to purchase cement or any other options that can easily seal-up the cracks.

Step 3

Install vents and install them in the lower area of your garage door. Although this seems to be a counterproductive process, it can actually make it easier for you to easily drain the water that might enter your garage.

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Step 4

Change your garage door weather stripping if it’s already worn out and cracked as it can easily let water enter your garage. Flooding can usually start from the top area of your garage door and slowly spread to underneath the door which causes major flooding.

Garage door weather strippings have their own lifespan and will slowly deteriorate over time. Make sure to check the weather stripping once a year if it already needs replacement so you can quickly replace it with a new one.

Step 5

Replace or install a bottom seal on your garage door to fully seal the bottom area of your garage. This prevents water from entering your garage and it can also become a weather seal such as the ones you installed on the top and side parts.

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Although a garage door weather stripping is usually installed in your garage, the bottom area usually doesn’t have one yet. You can easily do this with a bit of DIY and a few repair tools.

Step 6

Create a barrier in front of your garage door which stops water from even coming close to your garage. This is an assurance to avoid water from even hitting your garage door and it’s also necessary to install this in areas with heavy flooding.

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Use sandbags or create a hump that will be used as a dam so the water won’t enter the garage.

Other Methods of Keeping Water from Entering Your Garage


Aside from drains, you can install gutters around the perimeter of the house to prevent water to pile up into your garage. You can control where the water is going and redirect it into another area to keep it away from your garage.

Rubber Gaskets

Using a rubber gasket is a temporary solution that every DIY person will use to seal up their garage to prevent flooding. Although this is effective at some point, it will fail when you experience a heavy storm and flooding where the gasket fill starts to overflow.

What to do if your Garage Floods

There are times where your garage will eventually start to flood as leaks or damages to your seal can sometimes cause water to enter. You need to take these necessary precautions to prevent further damage to your belongings.

Turn off any Electricals

It’s essential to turn off the electricity inside your garage, or maybe even your home if your garage is directly wired straight to your house. This prevents any chances of you being electrocuted from any outlets or live wires.

Above all else, you need to avoid any kind of hazard that might occur whenever there is flooding to make sure that you’re far away from harm’s way.

Call a Professional

You should also contact a professional who is able to assess the damage of the flooding in your garage. They’ll be able to see if there is anything that might cause harm or create further damage inside your garage so you can take the necessary steps on removing that hazard.

Once they’re done with their assessment then you’re free to enter your garage and proceed with the cleanup from the flood.


By taking these necessary steps, you’ll be able to minimize and even prevent any chances of water from flooding your garage. Once you’re done renovating your garage door then you should check it at least once a year to see if there are any replacements needed.

You should also try to see if there are any areas around your garage where water might also start to leak and enter it. Basic maintenance of your home is essential to keep your belongings safe and your family away from harm.