Asked on Jun 19, 2020

How to fix garage that floods due to low floor?

Cynthia HOlivaAdrienne Carrie Hubbard | Crafty Little Gnome


garage floods due to low floor

14 answers
  • Kathy Gunter Law
    Kathy Gunter Law
    on Jun 19, 2020

    Is it coming in at the garage doors? We had that issue and my husband basically built a speed bump at the door. He used cap blocks, laid them the width of the doors, then covered and rounded them with a bit of ready mix. Just like that, the issue went away.

    on Jun 19, 2020

    Can you change the grading around the garage to slope away?

  • Mogie
    on Jun 19, 2020

    The foundation level of your garage should accommodate a buildup of rain water around it or else water is going to flood in. You should be able to see your garage foundation above your ground level. The higher your foundation, the better chances your garage will stay dry. But detached garages, especially ones built decades ago, may have insufficient foundation height. Installing a drainage system to flow water away from your garage or building a garage with a higher foundation are the main options that can help you solve the flooding problems permanently.

    Do you have gutters to catch and divert the water?

  • Redcatcec
    on Jun 19, 2020

    Is your garage floor cracked and the water is coming through from the ground up?

    Are the eaves clear and the downspouts unclogged?

    Is the drainage-landscaping-away from the garage?

    Take a look at them and see if you have any of these problems.

  • Morgan McBride
    Morgan McBride
    on Jun 20, 2020

    is your garage at the bottom of a hill or slope? it needs drainage.

  • Peggy L Burnette
    Peggy L Burnette
    on Jun 20, 2020

    HI Lisa, sorry your garage floods because it is low. I hope these suggestions will be helpful. 6 Techniques to Protect Your Garage from Flooding

    1. Replace Weatherstripping. Weatherstripping, as its name implies, keeps snow, rain, sleet, and other weather out of your garage. ...
    2. Inspect Foundation for Cracks and Damage. ...
    3. Install Adequate Drainage. ...
    4. Install Flood Vents. ...
    5. Lay Flood Barriers and Sandbags. ...
    6. Professionally Landscape Your Yard. ...
    7. Don't Forget to Talk to a Professional.

    Jan 22, 2016

    6 Techniques to Protect Your Garage from Flooding | DSI ... › blog › 6-techniques-to-pro...

  • Johnavallance82
    on Jun 20, 2020

    Hi Lisa,

    Higher the level of the floor inside the garage and fix a Threshold across the front of garage. If possible grade the driveway to run away from your garage. Best wishes.

  • Kmdreamer
    on Jun 20, 2020

    See we’re the water is coming from in the rain ,then divert the water with bricks away from the garage you could dig a trench around the front and add gravel and the rain will just go in there into the ground.

  • Lifestyles Homes
    Lifestyles Homes
    on Jun 20, 2020

    If the entire floor is way too low, one can’t just mix up a few batches of concrete and trowel them down, sadly.

    If this is the case and none of the above solutions are going to work,

    then I would acid etch & clean the entire floor, rent a concrete mixer and pour 2” of concrete “topping” that’s made to go on top of other concrete.

    It will need to be screeded to slope significantly to the door.

    You’ll have to hire help for the screeding and it’s going to be messy.

  • Sandbags around the outside

  • Oliva
    on Jun 22, 2020

    You may need a French drain system installed from the rear of your home, around one or both sides of your home. You may also need a better gutter system with wider gutters and downspouts, and a means to divert that water a minimum of 10' away from your garage/foundation. Ideally, an underground downspout extension system could divert the water out to near street level.

    Your situation may also require installation of a full width linear drain, near the garage door to catch any water at the front. This will require some excavation work, a great deal of 2B gravel, and some enginerring assistance to calculate the needed slope.

  • Cynthia H
    Cynthia H
    on Jun 26, 2020

    Hi! I would install gutters and route the run off to a drainage pipe setup. I would also consider diverting water away from the structure with French drains. Good luck and stay safe!

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