Countertop Overhang Support Requirements

Standard countertop overhang is 1 inches.

Countertop overhang support requirements.

How to install supports for an overhang or kitchen island. 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. If the deflection of the solid surface is greater than 1 4 the support is inadequate.

Keep in mind that this is 1 inches over the front edge of the base cabinet. While some countertops may have different overhang measurements this is the number that is seen as standard for homes. Don ts of countertop supports. Kitchen island countertop.

According to the corian fabrication manual the strength of the overhang may be tested by suspending a 100 lb. Once your countertop overhang exceeds these numbers it will require additional support through corbels base cabinets or knee walls. 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. For overhangs up to 12 inches corbel bracing is added for support.

Neglect planning your countertop layout and support. 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. Adding thick edges makes the overhang stronger. Risk damaging your countertops by leaving overhangs greater than 4 inches unsupported.

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. Use granite countertop support brackets to support countertops with overhanging stone. Quartz countertops often do not need support brackets. As the chart indicated solid surface countertops may only overhang 6 inches without additional support.

Different countertop materials have different requirements. Risk damage to your countertops by using a bracket that is not strong enough to support them. The bottom line is that the overhang must be properly supported. For structures with supports on only 3 sides areas around dishwasher counters cabinets structure an additional support will be required under the silestone.

Weight approximately one inch from the edge of the countertop. 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. Solid surface tops that are thick that extend beyond the cabinets by six inches or more need overhang support. Corbels are 90 degree decorative braces that fit up under the countertop.