Countertop Overhang Support Requirements

How to install supports for an overhang or kitchen island.

Countertop overhang support requirements.

Adding thick edges makes the overhang stronger. Once your countertop overhang exceeds these numbers it will require additional support through corbels base cabinets or knee walls. While some countertops may have different overhang measurements this is the number that is seen as standard for homes. Fragile stones may require corbels and supports that are spaced closer together and that do not allow as much overhang than the specifications here.

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. Final determination on bracket requirements and spacing should be recommended by your fabricator based on the following factors. Typically anything over 10 overhang dimension needs support with either brackets or posts. For designs where your countertop is cantilevered or overhangs the supports overhanging portion should be limited 16 to 24.

For overhangs up to 12 inches corbel bracing is added for support. The standard overhang for kitchen island countertops is. Kitchen island countertop. As the chart indicated solid surface countertops may only overhang 6 inches without additional support.

If you plan on putting an overhang on your kitchen island or at the bar top be sure to support it properly. Keep in mind that this is 1 inches over the front edge of the base cabinet. Most granite fabricators will recommend support brackets on overhangs over 12 however solely based on the overhang amount. Different countertop materials have different requirements.

Corbels are 90 degree decorative braces that fit up under the countertop. Use granite countertop brackets when overhanging stone counters. Check with your granite supplier to see what they recommend. 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.

Check out our previous article on granite spans. One arm supports the countertop and the other arm. Standard countertop overhang is 1 inches. 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.