Asked by: Asley Catarro
home and garden home appliances

Does granite need to be supported?

Quartz countertops often do not need support. Granite supports can be either functional, decorative, or both depending on your granite countertop installation. And unlike laminate countertops that do not require supports, natural stone countertops require some thought and understanding of why and how they will be used.

Regarding this, how do you support a granite countertop?

As a granite support guide, in designs where your countertop spans supports, the length of the span (side to side as your facing it) should be 16 to 20 inches. For designs where your countertop is cantilevered or overhangs the supports, overhanging portion should be limited to 2 to 3 inches from the outer edge.

One may also ask, how much support does granite countertop need? 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.

Beside this, do you need support for granite overhang?

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. So, we will need corbels or supports to keep the countertop from being in an unbalanced condition.

How far can granite span without support?

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.

Related Question Answers

Dorris Bilyk


Should you put plywood under granite countertops?

There is no plywood under the granite. From contributor K: You need to have a subtop to glue the granite to. This will prevent it from cracking when there are larger unsupported areas.

Licia Portell


How do you support a dishwasher with a granite countertop?

Granite Underlayment
This underlayment is a support made of either plywood or particleboard, which is laid across the top of the dishwasher, under the interior of the tops of the cabinets. Then the installer glues the granite counter with silicone onto the underlayment, as well as any front framework of the cabinets.

Gorka Reichert


Are my cabinets strong enough for granite?

Particle board cabinet boxes are strong enough to handle granite so they is no need for any concern here. The gap between cabinets where the dishwasher resides need only to have 3/4" plywood. Thus the need for 3/4" plywood placed over all the counter tops is best as I described in the earlier posting.

Saula Albi


How do you install a granite countertop in a kitchen?

Table of Contents
  1. Step 1: Order DIY Granite Countertops.
  2. Step 2: Prep the Cabinets to Receive Granite Countertops.
  3. Step 3: Prepare to Install Granite Countertops.
  4. Step 4: Cut the Plywood Sink Hole.
  5. Step 5: Join the Granite Seams.
  6. Step 6: Glue Granite Countertops Down.
  7. Step 7: Glue the Seams.

Jitka Nevares


How many corbels do I need?

Corbels need to be every 24"-30", with no more than 6" unsupported, and they will interfere with knee space. The island as done is a safety hazard.

Xandre Mala


How far can you cantilever granite countertop?

The Marble Institute of American says you can safely extend unsupported granite up to ten inches (for 1-14 inch thick slabs) where the cantilevered portion is no more than 1/3 the total width of the countertop.

Kasie Jurkin


Can you sit on a granite countertop?

You should not sit or stand on a granite, quartz or marble countertop. These stone countertops are not flexible and do not have any type of wood backing on them, so too much weight in one place could cause cracking.

Serafin Marcilla


How far can a quartz countertop overhang without support?

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.

Devid Aznar


How far can granite overhang Island?

The standard overhang for granite countertops is 1 ½ inches (12 inches for an island), just like the standards in general. Can You Extend the Overhang on a Kitchen Island Countertop? Yes, you can extend the overhang on a kitchen island countertop. However, you may need to install supports such as corbels or legs.

Ilies Yeadon


How much overhang is needed for a breakfast bar?

If you're doing a breakfast bar on the outside rather than storage, they are only one set of cabinets deep, but the bar will have 12-18 inches of overhang. Please keep in mind you'll need to add extra space for any trim.

Najih Potzschke


What size corbel do I need for granite?

How many corbels do I need? A general rule for granite is no more than 30 unsupported inches in length (span.) Keep in mind that a seated person requires about 24" of space, side-to-side. So, it's wise to place your corbels to the sides of your "parked" stools.

Enver Ruaz


What is standard overhang for granite countertop?

A typical countertop overhang extends 1 to 1 1/2 inches from the cabinet bases, not the doors.

Rachid Beinicke


How many countertop brackets do I need?

Countertop supports should be set 3” to 4” back from the front edge of the countertop to insure they are hidden from view. So 20 inches – 4 inches = 16 inch brackets. If your pony wall is made from 2 x 6s then be sure to adjust your size to accommodate the extra 2 inches.

Tariel Lindnau


How much overhang should a kitchen island have?

Use the basic dimension of 12 inches as a typical bar overhang. This allows room for stools to rest under the counter. If you can spare 18 inches, however, this means you have knee room without pulling the stools too far into the aisle space.

Jon Tzagunov


Can a dishwasher support a countertop?

Countertop Support Over a Dishwasher. Now, for a normal drop-in or under mount sink this wouldn't be an issue, as most manufacturers state that the countertops can run a 24" span without needing support.

Emmanuelle Luddicke


Can you replace cabinets and keep granite?

Here are some of the benefits of cabinet refacing—the only cabinet "replacement" option that is guaranteed to preserve your granite slab intact! Your existing cabinets will be reinforced. This will leave your "new" cabinets as strong—or stronger—as fully custom cabinet options. You can have any look you want.

Maier Lendinez


What do you put under granite countertops?

When installing granite countertops, you will not need an underlayment of plywood if the granite has a thickness of 3 centimeters (about 1 1/4 inches). However, for granite with a thickness of 2 centimeters (about 3/4 inches), you will definitely need to use plywood for support.

Bee Dunes


How do you reinforce granite countertops?

How To Reinforce a Granite Countertop
  1. Lay a sheet of 3/4-inch plywood across the cabinet tops.
  2. Position the plywood, width-wise, as desired to allow for the granite countertop's overhang on the leading edge.
  3. Measure the leading edge of the plywood to ensure the overhang is accurate.

Lusine Brandstadter


Do I need plywood under granite countertop?

There is no plywood under the granite. From contributor K: You need to have a subtop to glue the granite to. This will prevent it from cracking when there are larger unsupported areas.