How To Keep Water From Coming In Under Garage Door

How To Keep Water From Coming In Under Garage Door
  • Author: Amanda Arnold
  • Posted On: April 11, 2022
  • Updated On: August 21, 2023

There are fewer nightmares than returning home to find water damage to your personal belongings. Because of its direct exposure to the home’s exterior, places like the garage are notorious for water damage.

A garage door that hasn’t been properly sealed might cause issues. It’s just as crucial to have a dry garage as it is to have a dry home. You may not sleep in your garage, but it does provide protection from the weather for a variety of precious items as well as your vehicle.

Why Should You Concern About Water Coming In Under Garage Door?

As a result, you should handle your garage as an extension of your home. The problem arises because many garages do not effectively seal off the weather.

The good news is that we have a few suggestions for keeping the rain out of your garage door. Entering your garage and discovering rainwater accumulated on the floor is never a pleasant experience. This can cause structural damage to your garage and water damage to your garage contents, but it can also create health problems.

Mold can grow in places where there is continual moisture, for example. As a result, infections may develop and a bad odor permeating your garage. Not to mention that slipping on a damp garage floor could result in serious injury.

Ways To Keep Water Coming In Under Garage Door

Seal Doors

Water leaking under the garage door is frequently caused by a broken seal. Examine the area where the door meets the floor at the bottom. A flexible rubber gasket should run from one side of the door to the other.

The seal will be loose when the gasket is damaged, cracked, or torn when the door closes. Water might easily enter your garage through a faulty seal. Replace the seal to fix the problem. If you already have a gasket at the bottom of your garage door, but it’s not working properly, it could be ripped or broken.

To ensure that your garage door seals properly, we can install a new gasket or repair an existing one.

Change your Landscape Pattern

Examining the soil grade is another reasonably inexpensive and quick solution. The bottom line is that if your driveway’s perimeter is higher than the actual driveway, water will collect there rather than drain off the pavement.

When rainfall pools in one location around a house, it will eventually penetrate the building. You can change your home’s landscaping to better direct rainwater. In this scenario, the idea is to get it away from the foundation and close to the garage door.

Rearranging the landscape to enable more natural drainage away from the house is quite cost-effective and uncomplicated, albeit it will take a hard day or two sweating.

Dig A Drain

Despite your best attempts to prevent water from spilling under the garage door, a downhill sloping driveway always creates a challenge. Digging a drain trench in the concrete in front of the entrance and installing a steel or PVC pipe is the best solution.

An iron grate fits over the top, allowing water to drain into the trench rather than into your garage. The main drawback to a trench drain is periodically removing the grate and clearing it of debris. Water will eventually rise up over the trench if the channel becomes too blocked, rendering it unusable.

Install New Gutters

Even though gutters are installed around most of the house’s perimeter, some builders cut corners by not installing them around the garage door. As a result, adding gutters to your garage could potentially fix the problem of rainfall seeping under the door and appearing to enter from the garage’s roof.

Though the remedy is more expensive and time-consuming, it is worthwhile because it can avoid future catastrophic water damage. The downspouts will convey water from your roof to the sides of the unit, where it will inevitably collect around the top of the garage door. The further away from the foundation, you can divert water, the better.

Repair Garage Door Leaks

If the initial repairs don’t make much difference, it’s best to start with the simplest fixes and work your way up to more costly and time-consuming options. If your garage is currently leaking, it’s good to stay home during the next storm. It could assist you in determining the specific location of the water intrusion in the garage.

Water leaks can occur in several locations in a garage, necessitating the use of more than one of the treatments listed above. Regardless, the fixes outlined in this article will fix most garage leaks and prevent you from having to replace the entire roof or garage.


Finally, you now know how to address the problem of rainfall pouring through under your garage door or excessive condensation. Of course, having a high-quality, working garage door is the ideal solution. The easiest approach to prevent water from getting under your garage door is to replace it with a steel garage door.

Wear and tear may have caused your garage door to become misaligned. When you find that your garage door is not properly sealed due to water flowing below it, it’s time to replace it.

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Author: Amanda Arnold

Amanda has been working with ConstructionHow since 2021. Her experience spans over 5 years in the creative niche such as home decor and trends, landscaping, renovations, and custom architectural values. As a home designer expert, she has a keen eye for the latest home improvement trends with accurate facts that readers find impossible to ignore. Being invested in home-building trends is how she has gained her lucrative expertise exploring more to bring a positive ambiance for all homeowners (and even tenants!). Currently, she lives in a beautiful beach home, a source of fascination for her.