How to Repair Cracks in Stucco

By: Danny Lipford

It’s important to seal cracks in stucco immediately to prevent further damage.

Homeowners often choose wood, brick or vinyl siding for its appearance and durability.

Stucco — which is made from a mixture of sand, cement, water and lime — is another option. It has numerous benefits; many homeowners find it aesthetically pleasing, and if maintained well, stucco can last up to 50 years.

However, like any type of siding, stucco is vulnerable to impact damage and settling.

Though some damage is inevitable, fortunately, you can repair and seal cracks and holes in stucco.

Here’s how to do that.

First, grab all these materials — you’ll need them:
•Quikrete Stucco Repair, Quikrete Pre-Mixed Stucco Patch or Quikrete Polyurethane Concrete Crack Sealant
•Caulk gun
•Screwdriver
•Margin trowel or putty knife
•Wire brush
•Utility knife
•Hammer
•Chisel
•Commercial solvent or citrus-based cleaner (for polyurethane concrete crack sealant)
•Cloth
•Gloves
•Safety glasses

Now, let’s fix that stucco!

Step 1

Widen the crack in your stucco to at least 1/4 inch using a chisel and hammer. The crack’s edges should be vertical or beveled in an inverted “V.”

Step 2

Break away any deteriorating concrete and remove loose material with a brush.


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2 Comments on “How to Repair Cracks in Stucco”

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  • Official Comment:


    Thomas Boni Says:
    September 6th, 2018 at 9:13 am

    Hi, Diane! We would need to know more information, please. You said the crack is coming from a basement window — are you saying the window has a gap or an unwanted opening? Or is the crack located somewhere else, and if so, what type of siding is on the home?



  • Diane Beck Says:
    September 2nd, 2018 at 1:26 pm

    We have a small crack on the outside of our home coming from a basement window into the concrete base of the home. It’s apx 1/4″ and we need to know how we can repair this ourselves?


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How to Repair Cracks in Stucco