How to Repair Concrete Cracks in a Driveway
If you notice cracks on your concrete driveway you should take immediate action to repair it. Ripping apart your driveway will make it new again but it is a very expensive endeavor and it is rare for any homeowner to do concrete jobs themselves. A little time and effort to fix the cracks can make your driveway last a few more years. Otherwise, the cracks will eventually grow bigger and destroy your driveway. This is a moderately easy repair.
You will need a product that patches concrete well, caulk gun, garden hose or pressure washer, a putty knife, brush or broom, a scraper or trowel, chisel, screwdriver, and an optional air compressor with air hose.
Determine which fill for the crack is best for your situation. The following companies make good products for concrete crack repairs: Quikret, Rustoleum, and Wonderpaint.
If the weather in your area is constantly changing, use caulk so that it can flex with frequent changes in temperature. If applied properly, the caulk should not pop up.
Caulk may not last as long as grout. It is easier to apply than grout but grout can last longer unless the weather is harsh and active in temperature extremes.
If using a vinyl patch, apply immediately. It shrinks when it is drying. If it is dry, you can still reapply another layer over the patch.
For wet environments, epoxy patches are preferred. They are highly waterproof.
Matching patch color to the concrete is optional. When picking a patch, try to match the concrete as much as possible. If you cannot match the color, you can still matching paint over the patch or repair fill later.
Use any combination of screwdriver and chisel to loosen and remove large debris. Sweep the large debris away with a brush and use the air hose to take any other fine material away from the crack. Clean the entire driveway with a degreaser to remove grease and oily residue. Using the pressure washer, rinse the cracks of any remaining loose particles. Rinse the rest of the driveway and let it dry.
For any thin cracks less than a quarter inch, purchase the correct caulk meant for this application. Do not use the inexpensive caulk. Otherwise, you may have to redo the work again soon. Use the caulk gun with the caulk to seal the crack.
A second option is using epoxy concrete patch. Use a putty knife to put into the fracture.
For a third option, use a vinyl patch and use a scraper or trowel to put the vinyl application into the crack.
A fourth method for hairline cracks is grout. Moisten the surface and then pour the grout in the fissures.
Yet an interesting option is to get Portland cement and thin it with water so it looks and feels like paint or glue. Get a putty knife to fill in the cement in the cracks.
You can use the methods above for half-inch wide cracks or bigger. However, the cracks must be chiseled below the top so that the crack is narrower than the bottom of the crack. This will hold the caulk or patch inside and prevent escape.
Here is the link to Quikrete: http://www.quikrete.com/ they are too many concrete repair products to list.
Rustoleum also has many products for concrete applications:http://www.rustoleum.com/CBGProductFinder.asp?pfm=RST&bsq=2&bid=3
This is the direct link to Wonderpaint’s concrete paint: http://www.wonderpaint.com/asa603/likenu.shtml