The recommended overhang for a kitchen island without support typically ranges from 12 to 18 inches (30 to 45 centimeters). This overhang provides enough space for people to sit comfortably at the island while allowing their knees and legs to fit comfortably underneath.
Here are a few considerations for determining the appropriate overhang for your kitchen island:
Counter Stool Seating: If you plan to have counter stools or bar stools at the island, an overhang of 12 to 18 inches will allow enough space for individuals to sit comfortably and enjoy meals or conversations.
Clearance: Ensure that there is enough knee and leg clearance under the overhang to provide comfort and ease of movement for people sitting at the island.
Countertop Material: Consider the type of countertop material you're using for the island. Some materials, like quartz or granite, may be more susceptible to chipping at the edges if the overhang is too long. In such cases, it's better to stick to a shorter overhang.
Support for Larger Overhangs: If you want a longer overhang for specific purposes, such as creating a breakfast bar or additional workspace, you'll need to add support. This can be achieved using corbels, brackets, or leg posts placed strategically to support the extended overhang.
Safety: Ensure that the island is securely anchored to the floor and properly installed to prevent any accidental tipping or instability.
Keep in mind that local building codes and regulations might have specific requirements for overhangs, so it's essential to check with your local authorities or consult a professional before making any structural decisions for your kitchen island.