It depends on the weight of the countertop and the type of laminate. A standard countertop with a 20-pound weight limit can overhang 8 inches without support. If you have a heavier countertop or a different type of laminate, consult with your manufacturer or retailer for specific recommendations.

A laminate countertop can overhang up to 12 inches without support. Anything more than that, and you'll need to add a support beam underneath.