Countertop Overhang Support Requirements

Weight approximately one inch from the edge of the countertop.

Countertop overhang support requirements.

Kitchen island countertop. Solid surface tops that are thick that extend beyond the cabinets by six inches or more need overhang support. As the chart indicated solid surface countertops may only overhang 6 inches without additional support. The standard overhang for kitchen island countertops is.

Risk damage to your countertops by using a bracket that is not strong enough to support them. 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. Corbels are 90 degree decorative braces that fit up under the countertop. Use granite countertop support brackets to support countertops with overhanging stone.

If the deflection of the solid surface is greater than 1 4 the support is inadequate. 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. Don ts of countertop supports. Different countertop materials have different requirements.

Once your countertop overhang exceeds these numbers it will require additional support through corbels base cabinets or knee walls. The bottom line is that the overhang must be properly supported. Standard countertop overhang is 1 inches. Risk damaging your countertops by leaving overhangs greater than 4 inches unsupported.

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. 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. 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.

Neglect planning your countertop layout and support. For overhangs up to 12 inches corbel bracing is added for support. Quartz countertops often do not need support brackets. One arm supports the countertop and the other arm.

How to install supports for an overhang or kitchen island. According to the corian fabrication manual the strength of the overhang may be tested by suspending a 100 lb. Wait to the last minute to purchase your countertop supports. For structures with supports on only 3 sides areas around dishwasher counters cabinets structure an additional support will be required under the silestone.