Best paving pros near San Francisco, CA

You can pour concrete over asphalt if it’s in good condition, thick, stable, and well-compacted. Concrete is more durable than asphalt and can extend the lifetime of your driveway without having to pay frequent asphalt driveway repair costs or replace it completely. 

But this is best reserved as a temporary solution based on budget restraints, as asphalt requires more frequent repairs and assessments than concrete. Once that concrete top is poured, it’ll be harder to accurately understand what’s happening beneath that layer, which could lead to more issues.

Maintaining a driveway depends on its material. For concrete and asphalt, it's best to clean the surface thoroughly twice a year with a stiff broom and a pressure washer to remove accumulated dirt and debris. Sealing the driveway is crucial to protect it from water damage and freeze-thaw cycles. Before applying a sealant, pressure wash the surface to remove any loose sealant, dirt, or stains, as sealing over them will trap them. Any cracks or expansion joints should be filled with a flexible polyurethane caulk or asphalt sealer. In colder climates, use sand instead of salt for de-icing. Sand helps melt snow and ice without accelerating the freeze-thaw process, which can cause cracks.

Box fill refers to the maximum number of conductors that can be contained within a wiring enclosure box, as well as the total volume of the components. Determining the allowable number of conductors in a box requires adding up the number of conductors, clamps, support fittings, devices and equipment, and equipment grounding conductors to make sure you’re within the allowable volume.

Yes, hardscaping is generally a great investment that can increase your home's value. Hardscape features improve your yard's functionality, safety, and aesthetics, which boosts curb appeal and overall property value. According to a survey by the National Association of Realtors and the National Association of Landscape Professionals, hardscape upgrades are one of the top four outdoor projects that add value to a property for resale, along with landscape upgrades, landscape management, and lawn care services. While most buyers see value in these features, some may be concerned about potential increases in property taxes or the cost to alter them later. However, the return on investment is typically excellent. For best results, hardscaping should be combined with professional landscaping, and it's wise to hire a reliable contractor for installation.