Driveways should have a slight slope to allow water to drain away from the surface. If the slope is too steep, it is dangerous and slippery in bad weather. The rise of your slope should be no more than 15 percent. If your home is on a hill, adding curves to the driveway is one way to reduce the incline. Fixing a slope is a challenging project with several solutions, depending on its severity.
Extend the bottom sides of the driveway to form a V shape with the wide end facing the street. Fanning out the sides helps prevent a vehicle from bottoming out, and makes it easier to turn in and out of the driveway.
Remove any growth within the area and dig out 12 inches of soil on both sides with a shovel. Fill the hole with 8 inches of gravel and tamp it with a tamper. Pour concrete or asphalt over the expanded section and smooth it level with the existing surface.
Raise the height of the steepest section of the driveway. For instance, if the driveway is concrete, smooth successive thin layers of new concrete over the surface with a trowel. Build up the surface in thin layers to reduce the angle.
Cover a gravel driveway with decomposed granite and apply stabilizing resin over the top to prevent the rocks from washing away and to provide a surface with more traction.
Install underground drain pipes between the driveway and garage if the slope is toward the house. Cut the pavement with a concrete saw or handheld cutting tool fitted with a masonry cut-off wheel accessory. Break up the concrete with a jackhammer or sledge hammer. Dig a trench about 12 inches deep and wide with a shovel.
Fill the trench with clean gravel until the expanse is deep enough for the channel to sit level with the driveway and garage. Install a drain channel across the driveway and use PVC cement to seal the joints. Extend the course of the underground pipes to direct the water into a dry portion of the yard.
Tips & Warnings
- Wear eye and ear protection when using power tools, as well as heavy gloves and protective clothing.
Things You'll Need:
- Concrete saw or handheld cutting tool
- Jackhammer or sledge hammer
- Drain channel
- PVC cement
- Decomposed granite
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