Driveways, Walks and Patios
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Most driveways, walks and patios in homes are constructed of concrete or asphalt. We have anticipated normal stresses on these concrete areas and have provided contraction and expansion control joints to minimize cracking; however, cracking is one of the characteristics of concrete and a method of entirely eliminating cracks is still sought. Unanticipated cracking sometimes occurs from unforeseeable conditions, such as severe frost or changes in home site grade which prevents proper runoff from rain or watering. Ordinarily, the cracks are of no serious consequence. Minor repairs can be made by following these steps:
1. Roughen the edges of the crack if they are smooth.
2. Clean out loose material and dirt.
3. Soak the old concrete thoroughly. (The crack should be sopping-wet, but water should not be standing in it.)
4. Fill the crack with patching cement slightly higher than the crack to allow for shrinkage. Commercially prepared patching mixtures need only the addition of water, but be sure the mixture you buy is appropriate for concrete.
5. Cover and keep damp for several days. The longer the drying time the stronger the patch will be.
6. When the cement has partly set, remove excess cement with a wire brush. At this stage the surface of the cement appears sandy. You should consider sealing your concrete surfaces with a good quality sealer. This will protect the surface and the finish from water, road salt, or oil stains.
If your driveway is asphalt, a seal coat mixture should be applied every two years. This practice will protect the surface of the drive, help fill in the crevices, help to keep water from penetrating and deteriorating the asphalt, and maintain the good looks of your driveway. Never park bicycles on asphalt or set outdoor furniture on asphalt, as the sharp ends of a kick stand or chair legs can poke holes in it.
NOTE: You should avoid applying salt to concrete or asphalt, as it will deteriorate the surface of these materials. To assist you in having traction on ice you may use sand. Remember to provide a mat at the front door so sand will not be tracked into your home.
