To be on the safe side, support the stone wire mesh or plywood as well as with corbels or brackets placed at equidistant intervals along the width of the bar top. Put them closer together if you have 2-cm granite slabs for your bar top. Your overhang should not exceed 24 inches.
You should use a countertop bracket that extends within four inches of the countertop edge. This prevents too much pressure and weight on the countertop without proper backing. Fasten these brackets with fasteners to keep them securely in place.
Granite Overhang Limits Per Experts
According to the Marble Institute of America, you can safely overhang granite that is 1- 1/4″ thick up to 10″ without supports. However, the cantilevered portion cannot be more than 1/3 the total width of the countertop.
The maximum overhang is no more than 1/3 of the total dimension of the countertop – not to exceed 15”. Overhang greater than 15” requires corbels or flush mounted steel supports. Supports must be designed to bear the weight of the countertop and be mounted to studs or equivalent load bearing structure.
For 3cm stone, use an I-brace support with overhangs that are 12 inches or greater, and for 2cm stone, use an I-brace support with cantilevered brackets or corbels that match the cabinets. I-brace supports are spaced every 18 to 24 inches, and other bracket systems are spaced 3 to 4 inches apart.
How many granite brackets will you need? Countertop brackets are generally spaced 18 – 24 inches apart. Start with a bracket at each end of the countertop set 4 – 6 inches away from the end.
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.
To be on the safe side, support the stone wire mesh or plywood as well as with corbels or brackets placed at equidistant intervals along the width of the bar top. Put them closer together if you have 2-cm granite slabs for your bar top. Your overhang should not exceed 24 inches.
The space you have in your home: A countertop overhang can come in handy especially when you need an extra prep space or shelving. However, it can also take up quite a bit of space in a small kitchen. The 70% rule: 70% of your countertop needs support.
1- How much overhang do you have
Most granite fabricators will recommend support brackets on overhangs over 12″ however, solely based on the overhang amount. Final determination on bracket requirements and spacing should be recommended by your fabricator based on the following factors.
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.
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.
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.
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.
You wonder. Well, here is the answer. After the granite technicians have placed the countertops on the cabinets and ensured everything is leveled, they apply a bead of silicon at the countertop and cabinet intersections and the stone's underside. In most situations, this is enough to hold the countertop in place.
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.
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.
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.
Usually, the conventional overhang of a countertop should be placed at 1 to 1 ½ inches above the cabinet. At the same time, the bared and exposed ends of a countertop should usually have a ½ inch overhang. The edges that suffice to a wall should not have any overhang to retain the fit flush to the wall.
“You should never use Bar Keepers Friend on your granite or marble countertops, as it will leave corrosive marks that will be impossible to ignore once done,” explained Jessica Randhawa, the head chef, recipe creator, photographer, and writer behind The Forked Spoon.
Placing a lot of weight on granite countertops can cause them to crack and split. This means do not sit or stand on them. If you are making a large dinner, try to set as much as possible in areas where there is more support.
The weight of a concrete countertop has a lot of bearing on how it is built and how it will be installed. A standard 1.5” thick concrete countertop has an approximate weight of 18.75 pounds per square foot. In comparison, granite is approximately 18 pounds per square foot.