Granite thickness – granite tops with a thickness of 3 cm can have an 8-10 inch overhang without additional supports. If your granite top has a 2 cm thickness, we recommend attaching a support system should the overhang exceed 6 inches.
Different countertop materials have different requirements. Solid Surface countertops can overhang 6 inches without additional support (e.g. plywood decking). 3 cm Quartz (engineered stone) can handle a 14 inch overhangs and 3 cm Granite overhangs should not exceed a 10 inch overhang without additional support.
Overhang that exceeds 24” requires the use of substrate and posts installed evenly at a maximum of 36” between centers of each adjacent support. Tops on half wall can be installed using steel supports with overhang up to 12”. Overhang greater than 12” will require corbels or legs.
You must be thinking about standing or sitting on your countertops and unsure whether your countertops will take the weight, right? Granite is fairly thick, often at the very least ¾ of an inch. If the weight is evenly distributed over a large area, the countertops can hold up to 1000 pounds.
In most cases, support is placed underneath unless the overhang is 6 inches or less. According to the Marble Institute of America, you can safely overhang granite that is 1 ¼ inches thick up to 10 inches without support.
Standard countertop overhang is 1 ½ inches.
Keep in mind that this is 1 ½ 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. While 1 ½ inches is the most common, it's far from mandatory.
Dishwashers. Not all kitchens have dishwashers, but if you do, your granite countertops will probably go right over it. This means a little over 24 inches of countertop space with no cabinet underneath that will need additional support.
Most cabinets should hold up well for granite countertops, and provide them with proper support, as long as the granite is at least 1.25” thick.
A typical overhang for a comfortable seating area should be around 25-30cm (10-12”), this should leave enough knee room and adequate space between the countertop edge and the person seated. Therefore, as the depth of the overhang increases, so does the comfort and usability of the bar.
Ensure your supporting structure is sufficient for holding your countertop and supporting brackets or corbels. Use a countertop support that extends to within 4 inches of edge of your countertop.
The height of an island usually matches the height of a countertop at 36 inches. If your island has seating, the counter should overhang at least 15 inches. An island with a taller height for bar stool seating should be 42 inches high and the overhang should be at least 12 inches.
1. Purpose. If the counter is to be used for food prep, the standard measurement for the overhang is 1-1/2 inches. This is long enough to provide some protection for your cabinets without forming an obstruction.
Granite slabs come in many different shapes and sizes. Slabs can range in size from 50 to over 86 inches tall and from 90 to 140 inches long. If the length of a countertop is longer than the nominal length of the slab it will require a seam.
A counter can be well supported by extending the side gables of an island. Ideally make the gable 2″ to 4″ thick so that it proportionality works with your size of your island. This form of support is great for adding strength to the corner of the counter overhang.
Granite Bracket Thickness
They brackets are under a floating countertop, so the ascetic isn't too important. Since these brackets are mostly hidden, we highly recommend using 3/8″ or 1/2″ thicknesses, which are our two thicker models.
You can have your granite countertops sized however large your space is needed, but the larger it is the heavier it will be. If the granite slab is too heavy for your cabinets to support, additional structural support may be implemented into your cabinetry.
Basic granite countertops still need an overhang if they're not going to be flush against the wall. Typically, this is just 1 in. to 2 in. of extra length for design and function. An overhang of at least a half-inch will prevent crumbs and food particles from falling from the countertops onto the drawers below.
An unsupported span of 24” and up to a maximum of 36” is acceptable as long as the stone is supported on both sides of the span. Longer spans must be supported across the span. Over hangs should be not exceed 6” for 2cm granite, 10" for 3cm granite and 15" for 3cm quartz beyond the supported area.
Granite can withstand the HOTTEST pot, dish, crock-pot, or griddle without concern.
Homeowners don't need to worry about damaging their countertops with everyday use because granite is quite heat resistant. Placing a hot pan on a well-maintained granite slab will not cause it to crack or weaken. Just remember that repeatedly placing a very hot pan on the same spot may cause granite to discolor.
You must be thinking about installing granite in your home, but aren't sure whether also budget for plywood, right? Well, you need plywood if your granite slab is less than 3cm thick. You should note that you will still need support in certain situations, even if your countertops are more than 3cm thick.
Since countertops sit directly on the cabinets, the cabinetry must be installed prior to the final measurements, fabrication, and installation. If an apron or farmhouse sink is being used, it must be installed prior to template process.
In general, the recommended countertop overhang is between 1 and 1.5 inches. 'The standard overhang measurement is based on the fact that most people find this distance be the perfect place to rest their forearms while food prep is taking place,' notes Chris Alexakis, founder of CabinetSelect.
You can get away with no overhang to just sit near the counter (sitting sideways) but it's standard to use 12 to 15" to be comfortable.