Countertop Overhang Support Requirements

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.

Countertop overhang support requirements.

Weight approximately one inch from the edge of the countertop. One arm supports the countertop and the other arm. For structures with supports on only 3 sides areas around dishwasher counters cabinets structure an additional support will be required under the silestone. Don ts of countertop supports.

While some countertops may have different overhang measurements this is the number that is seen as standard for homes. Solid surface tops that are thick that extend beyond the cabinets by six inches or more need overhang support. 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.

Keep in mind that this is 1 inches over the front edge of the base cabinet. 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. Risk damage to your countertops by using a bracket that is not strong enough to support them.

According to the corian fabrication manual the strength of the overhang may be tested by suspending a 100 lb. 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 damaging your countertops by leaving overhangs greater than 4 inches unsupported. How to install supports for an overhang or kitchen island.

As the chart indicated solid surface countertops may only overhang 6 inches without additional support. 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. For overhangs up to 12 inches corbel bracing is added for support. Kitchen island 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. Neglect planning your countertop layout and support. Different countertop materials have different requirements.

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. 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. Adding thick edges makes the overhang stronger. Use granite countertop support brackets to support countertops with overhanging stone.