How to Keep Water Out of a Garage

Gutters help keep water out of your garage.
Gutters help keep water out of your garage. (Image: red garage door image by green308 from <a href=''></a>)

Nothing is more annoying than discovering that your garage has been overtaken by water. Water enters garages in a variety of different ways, but most water enters by way of unprotected or unsealed roofs and doorways. If not removed from your garage in a timely manner, water can wreak havoc on your property by causing mildew and odor. Learning how to keep water out of your garage is essential if you want your garage to stay in good, working condition.

Things You'll Need

  • Gutters
  • Downspouts
  • French drain
  • Ladder
  • Garage door threshold
  • Caulking

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Install gutters, complete with downspouts and water drains, like a French drain, onto your property. Gutters collect and divert rainwater away from your garage. According to the Washington State University Clark County Extension, French drains are used to collect runoff from a gutter system and divert the water around buildings, like garages. You can purchase gutters, downspouts and drain kits from hardware stores.

Clean your gutters of leaves and debris regularly. Leaves, sticks and other debris have a tendency to clog up gutters, which allows excess water to spill out of the gutter and into your garage. Use a secure ladder to reach and clean the gutters and place all debris in a garbage can.

Install a garage door threshold. Garage door thresholds help prevent water and debris from entering your garage. You can purchase garage door thresholds from hardware stores.

Seal up any holes or openings in your garage with caulk to prevent rainwater from entering your garage. You can purchase caulking at hardware stores.

Tips & Warnings

  • Check that your driveway is level. Unlevel driveways may direct water into your garage.
  • Gutters, downspouts and drains have to be installed correctly to prevent water from entering your garage. Call out a professional to ensure you’ve installed the gutter, downspouts and drain correctly.


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