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Simple Things You Can Do to Repair a cracked Patio

Simple Things You Can Do to Repair a cracked Patio
Last Updated: 05 September 2019

We all love a smooth and good-looking patio. Terraces are a vital component that will define your outdoor living space. But just like all things, they develop cracks with time, and I know it’s a frustrating and annoying feeling.

Most of these cracks in our terraces are non-structural that can be easily repaired with simple tools in our garage and are affordable.

In this post, we discuss everything about concrete patio repair. The beauty of it is that you can do it all by yourself at home with no extra cost. It does not get any better than that! Stay tuned it’s going to be quite a ride!

Tools required for concrete patio crack repair

Before delving any further, let’s first get to know some of these essential tools that you will need when fixing your cement terrace.

  • Split fillers that are polymer-based
  • A solid cement break filler
  • Hammer
  • Caulking gun
  • Flat mason’s chisel – heavy duty type
  • Wire brush
  • Safety vacuum
  • Hearing protection accessories
  • Utility and putty knife
  • Safety glasses.

Currently, there are plenty of products that are used in patching up or repairing cracked concrete patio. Some of those main options include:

  • Polymer resins – They are premium materials that cost quite a lot. They offer deep penetration with a robust structural repair which forms a strong chemical bond with these slabs firmly holding them together. Some of the most common materials include Polyurea and Epoxy.
  • Concrete – They are usually semi-structural products and low-priced that repair this break entirely. With concrete on one of these best ways to achieve excellent results is undercutting that break in a chiselled form, creating an inverted V-Shaped creating sufficient power between that old and new break.
  • Sealers and Caulks – They mostly fix surface breaks that are non-structural, very cheap, and easy to fix. That only drawback of these products is that they can only fix breaks that are 1/2″ wide and below, their durability is questionable.

What are some of the causes of cracked patios?

Homeowners must know some of the common causes of a cracked patio enabling you to use that best cracked concrete patio solutions.


On this contrary to popular belief. Weeds are not that first cause of a cracked patio; if there is a break, these weeds will grow through it towards that light, thus widening that break. Once on this break, it’s almost unstoppable unless you use chemical solutions.

The best way of dealing with weeds in your terrace is by using a weed fabric that will only allow water to pass through it but restricting light.

And with all plants, light is a crucial element of their growth, and they will die out.

Ground movements

Ground movement is one the initial causes of a cracked terrace; geographically the ground moves a few MM every year as these tectonic plates move and shift due the earth’s core cool down or heat up.

Due to this constant shifting every year, the movement causes that break. With all concretes if they aren’t flexible to withstand that change, they will inevitably crack.

Simple steps on how to fix cracks in a concrete patio

Determining the size of the crack

The size of your break is vital to determine what repair type you’ll use, and the materials to cover up the split.

Some of the most common splits in concrete are:

  • True break – They have different sizes and have considerable depth and width
  • Hairline break – They are mostly surface splits meaning they are always shallow and quite narrow.

Selecting a filling material

Some of the common filling materials used are a sand mixture of cement brands of your choice. Depending on how large your break is, the suitable option is using epoxy fillers or coarse aggregate concrete.

Epoxy fillers are best suited for splits that are one inch or less and are tailor-made for concrete with a grey color option that will fully complement your cracked terrace.

For a super-large cracked patio, the mind-boggling question is how to repair large cracks in concrete porch? Well, the cement mixture is the way to go; a cement mix of cement and sand will do the trick.

Undercutting of larger cracks

Ever wondered how to repair large cracks in a concrete patio, bigger hairline cracks require an undercut for a quality fix. Its recommended to use both a hammer and chisel to enlarge the split enabling the cement mixture firmly to stay in place.

Cleaning the crack area

The cracked area must be extensively cleaned, so remove any old filler, dirt, grout or cement. It can be done in a quick and simple process.

  • Loosen old materials using a chisel.
  • Use a wire brush for removal of all the debris.
  • Spray the split using a pressure hose, it thoroughly cleans the area, and it will minimize moisture leaching on the brand-new cement.

Preparation of the crack

Prepping the split is done using cement adhesive for larger cracks or chemical cleaner that improves the adhesive force in the cement. For hairline cracks, it’s advisable always to use chemical cleaners.

Installation of the repair material

Prepare a thick mixture of sand and cement and apply it onto the break. Smoothen the cracked area; you can also use epoxy fillers by squeezing them onto the splits using the caulking tube.

P.S. Always ensure the split is sufficiently filled.


Concrete fillers always require smooth finishing using either a metal trowel or wood float. Cover it for five days and don’t forget to pour water on it once a day. Giving it a smooth and elegant look.

For epoxy fillers, no finishing is required.

What else to say?

Have you always wondered how to fix hairline cracks in a concrete patio? We have discussed various ways of concrete patio crack repair for that beautiful barbeque with friends and family!

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