Why Garage Floors Crack

Many people find cracks in their garage floors. It’s important to know why these cracks happen so you can fix them properly.

• Reasons for Cracks:

  • Ground Movement: The ground under your house can move and settle, making the concrete crack.
  • Weather Changes: In places with big temperature swings, like Canada, concrete can expand and shrink, causing cracks.
  • Water Damage: Water can get into cracks, freeze, and make the cracks bigger.
  • Bad Installation: If the concrete was not mixed or installed right, it can crack sooner than it should.

Checking the Cracks

Before you fix the cracks, you need to see how bad they are.

• Types of Cracks:

  • Hairline Cracks: These are very thin and usually not a big deal.
  • Spiderweb Cracks: Small cracks that look like a spiderweb.
  • Deep Cracks: These are wide and deep and can affect the strength of the floor.

• How Serious Are the Cracks:

  • Surface Cracks: These are only on the surface and don’t harm the floor.
  • Serious Cracks: These can make the floor weak and are a bigger problem.

Tools and Materials You Need

It’s important to have the right tools and materials to fix the cracks.

• Tools:

  • Safety goggles
  • Wire brush
  • Chisel and hammer
  • Shop vacuum
  • Trowel

• Materials:

  • Concrete crack filler
  • Epoxy resin (for bigger cracks)
  • Patch compound
  • Sealing agent

Steps to Fix the Cracks

Follow these steps to fix the cracks in your garage floor:

• Clean the Crack:

  • Remove Loose Stuff: Use a wire brush and vacuum to clean out the crack.
  • Wash the Area: Use water and soap to clean the area around the crack.

• Fill Small Cracks:

  • Use Liquid Crack Filler: Pour the filler into the crack and smooth it out with a trowel.
  • Let It Dry: Wait for the filler to dry completely.

• Fix Deep Cracks:

  • Mix Epoxy or Patch Compound: Follow the directions to mix it.
  • Fill the Crack: Pour the mixture into the crack and smooth it with a trowel.
  • Level the Surface: Make sure the surface is even with the rest of the floor.

• Seal the Repaired Area:

  • Apply Concrete Sealer: Once it’s dry, put on a sealer to protect it.
  • Let it Cure: Make sure the sealer dries completely.

Tips for a Good Repair

• Be Patient: Give enough time for everything to dry.
• Get Help When Needed:
  • Big Cracks: Cracks wider than 1/4 inch may need a professional.
  • Structural Issues: If the cracks seem to affect the floor’s strength, call an expert.

Preventing New Cracks

Here are some tips to help prevent future cracks:

• Good Drainage: Make sure water doesn’t stay near your garage.
• Control Temperature: Insulate your garage to reduce temperature changes.
• Regular Checks: Look at your floor often and fix problems early.

FAQs About Fixing Garage Floor Cracks

• When Can I Park My Car?

  • Wait at least 1-2 days before parking on the repaired area.

• How Long Will It Last?

  • If done right, the repair can last many years.

• What If The Crack Comes Back?

  • Check the reappearing crack and maybe call a professional.

• Are Small Cracks Normal in New Floors?

  • Yes, small cracks can appear as the concrete cures and the house settles. They are usually not a problem.

Fixing cracks in your garage floor can help it last longer and prevent bigger issues. Follow these steps and tips for the best results.