How To

How to Repair Concrete

Contributor
By eHow Contributing Writer
(10 Ratings)

Other than earth movement, moisture is the main cause of cracks in concrete. Here's how to deal with moisture damage.

Difficulty: Moderate
Instructions

Things You'll Need:

  1. Step 1

    Clean out cracks of any size as best you can, using a wire brush or even a strong spray of water.

  2. Step 2

    Fill small cracks (less than 1/8 inch) with caulk specially made for concrete. (Be sure cracks are dry before caulking.)

  3. Step 3

    Fill larger cracks or small holes (less than a few inches) using patching products designed for concrete. These usually are in the form of a powder that is mixed with water. They typically expand as they dry and become very hard.

  4. Step 4

    Apply sealant or paint to the concrete.

Tips & Warnings
  • Patching compounds generally work better if the crack is damp or wet.

Comments  

Rocki said

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on 7/22/2009 The best concrete patch i ever used, inside and out was Belzona. Amazing stuff, expensive but you do it one time.

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on 2/3/2009 You make it sound so easy! Thanks!

mcbethd1 said

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on 12/3/2008 I HAVE MILDEW ON MY SEALING,IT DOES SHOW IN THE SUMMER,
BUT AS SOON AS THE WINTER HITS,IT SHOWS.WHAT CAUSES THE
PROBLEM?AND HOW CAN I FIX IT

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