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Yes, pea gravel is good for driveways as long as your driveway isn’t built on a hill or any type of slope where it can slide. It’ll settle on a flat surface and create a suitable driveway over time, though some spreading initially will take place. If you're wondering how to make a gravel driveway in a high-rainfall area, using pea gravel could help you to cut down on costs needed for extra drainage solutions.

The most obvious disadvantage of permeable paving is that the cost is typically higher compared to non-permeable concrete, pavers, or asphalt methods. Also, the porous material can get clogged with dirt and debris, requiring cleaning and power washing more frequently than standard paving materials and methods. Although permeable paving is not ideal for highways, airports, and other surfaces supporting heavy traffic and machinery, it is suitable for regular residential driveways.

Yes, it is possible to pave over an existing driveway, but whether it's the right choice depends on several factors. If the underlying structure of your current driveway is still strong, concrete or asphalt resurfacing can be a cost-effective way to prolong its life. However, if your driveway has significant issues like potholes, deep cracks, or other inconsistencies, it is best to remove the old driveway and start from scratch. Key factors to consider include the current driveway's condition, the compatibility of the new material, the added thickness and height, and the necessary surface preparation.

The average cost of 1,500 square feet of asphalt ranges from about $10,500 to $22,500, depending on location, thickness, base material, and how accessible the job site is to crews and equipment. Keep in mind that your asphalt material cost may vary depending on its type, ranging from porous asphalt to heated blacktop. Standard asphalt costs $7 to $13 per square foot.