Asphalt paving is less expensive than interlocking paving on a square footage basis. The materials cost less and it takes less labour to install. These factors make asphalt a good choice if you are working on a tight budget. However, there are some drawbacks to asphalt that should be considered before making a final decision. Asphalt tends to crumble and crack over time, especially in areas with heavy traffic or extreme weather conditions. It also doesn't last as long as interlocking paving, so you may need to replace it more often. Weigh all of the factors before making your final decision to ensure you choose the best option for your needs.