Countertop Overhang Support Requirements

One arm supports the countertop and the other arm.

Countertop overhang support requirements.

Keep in mind that this is 1 inches over the front edge of the base cabinet. Solid surface tops that are thick that extend beyond the cabinets by six inches or more need overhang support. For overhangs up to 12 inches corbel bracing is added for support. Once your countertop overhang exceeds these numbers it will require additional support through corbels base cabinets or knee walls.

For structures with supports on only 3 sides areas around dishwasher counters cabinets structure an additional support will be required under the silestone. Fabricating and installing overhang countertops as a general guideline support is required for overhangs of corian solid surface extending more than 6 152 mm in 1 2 12mm material and overhangs extending more than 12 305 mm in 3 4 19 mm material. Neglect planning your countertop layout and support. Don ts of countertop supports.

Considering that granite marble and limestone can have overhangs weighing hundreds of pounds and considering how brittle granite countertops can be granite support brackets are imperative. How to install supports for an overhang or kitchen island. Overhangs like those found on a wall pass through and eating bars of more than 6 but less than 12 can be supported with wood or metal corbels. Standard countertop overhang is 1 inches.

Corbels are 90 degree decorative braces that fit up under the countertop. Weight approximately one inch from the edge of the countertop. If the deflection of the solid surface is greater than 1 4 the support is inadequate. Quartz countertops often do not need support brackets.

Risk damaging your countertops by leaving overhangs greater than 4 inches unsupported. Adding thick edges makes the overhang stronger. The standard overhang for kitchen island countertops is. Without any additional support solid surface countertop overhangs cannot exceed 6 engineered stone cannot exceed 14 and granite overhangs shouldn t be more than 10 without additional supports.

Different countertop materials have different requirements. As the chart indicated solid surface countertops may only overhang 6 inches without additional support. The bottom line is that the overhang must be properly supported. It is a standard installation rule that 70 of the total countertop width of a countertop must be supported by base cabinets knee walls corbels etc.

Risk damage to your countertops by using a bracket that is not strong enough to support them. Use granite countertop support brackets to support countertops with overhanging stone. Wait to the last minute to purchase your countertop supports. The maximum overhang without support is approximately 15 for 1 1 4 material in a narrow bar or 11 in 3 4 material in an island.