How do you support a countertop?

Asked By: Fania Astarriaga | Last Updated: 22nd June, 2020
Category: home and garden home appliances
3.9/5 (294 Views . 14 Votes)
Do's of Countertop Supports
  1. Ensure your supporting structure is sufficient for holding your countertop and supporting brackets or corbels.
  2. Use a countertop support that extends to within 4 inches of edge of your countertop.
  3. Fasten your supports to the most substantial support available.

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Correspondingly, how do you support a floating countertop?

How to Make a Floating Vanity Countertop

  1. Introduction: How to Make a Floating Vanity Countertop.
  2. Step 1: Tools and Materials.
  3. Step 2: Bare the Studs.
  4. Step 3: Fasten the First Steel Bracket.
  5. Step 4: Fasten Brackets Along All Studs.
  6. Step 5: (Optional) Add Mirrored Brackets.
  7. Step 6: Drywall Patching and Bracket Concealment.
  8. Step 7: Attach the Countertop.

Secondly, how much weight can a kitchen counter support? Countertops are fairly thick - at the very least 3/4 of an inch, but can be much more. Also, the weight will be distributed over a fairly large area. Thats way more of everything than my hagen stand has - and it's rated to hold up to 1000 pounds! The weak spot on a kitchen counter is the sink area.

Then, how many inches can granite overhang without support?

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 are ok on the first criteria, but we exceed the 1/3 criteria by four inches.

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.

38 Related Question Answers Found

How do you support a countertop over a washer and dryer?

Typically, laundry rooms have a counter over a front load washer and dryer. In order to support the countertop, you need something that will keep it affixed to the wall, and something to hold it above the laundry machines. This easy method uses a combination of cleats and a gable to achieve that.

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.

How do you support a Quarthan countertop overhang?

Support Requirements for Spans and Cantilevers
  1. The overhang cannot exceed 13 of total countertop depth, and must be a minimum 24 inches in length.
  2. 2 cm material requires support every 24 inches, and 3 cm requires support every 36 inches.
  3. Install support strips where necessary to meet span requirements.

How do you support a countertop overhang?

Do's of Countertop Supports
  1. Ensure your supporting structure is sufficient for holding your countertop and supporting brackets or corbels.
  2. Use a countertop support that extends to within 4 inches of edge of your countertop.
  3. Fasten your supports to the most substantial support available.

How do you secure a countertop to a cabinet?


How to Attach Countertops to Kitchen Cabinets
  1. Position the countertop pieces on the cabinets.
  2. Apply a bead of silicone caulk or construction adhesive along the top edge of all the cabinet parts that support the countertop.
  3. Lower the countertop back into place or remove the shims.

How do you fix a gap between a wall and a countertop?

Caulking the Gap
If you can reduce the gap to 1/4 inch or less, you'll be able to fill it with acrylic latex or silicone caulk. If the gap is wider, stuff some backer rod in first. This is foam beading that supports the caulk and prevents it from sinking and forming voids.

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.

Can Ikea cabinets support quartz countertops?

For what it costs to buy custom cabinets, a homeowner can remodel their entire kitchen by using IKEA cabinets. Many of my clients with IKEA kitchen cabinets use a quartz or granite countertop and have had no problem with their countertop. For some reason, countertop installers/kitchen designers are leery of IKEA.

How much can a shelf overhang a bracket?

If your studs are spaced 24 inches apart, plan to attach a standard to each stud. Shelves should overhang the side brackets by no more than 6 inches.

How do you overhang a laminate countertop?


One arm supports the countertop and the other arm connects to the side of the cabinet. The front of the corbel has a French curve cut into it for aesthetics. Corbels are placed between 24 and 36 inches apart underneath to support the overhang, and the particleboard or plywood should also be doubled.

How do you secure a countertop to a wall?

  1. Slide a stud finder over the wall to locate the wall studs.
  2. Measure from the floor to the height you want the top of your countertop to sit.
  3. Place a 2-inch-by-4-inch-by-6-foot wood board on the lower line you marked on the wall.
  4. Attach three 1-inch-by-4-inch wood boards to the wall brace board to hold the countertop.

How much should the overhang be on a granite countertop?

The standard overhang is 1 ½” from the face frame of the cabinets. This gives a good visual appearance because it creates a ¾” overhang from the door fronts. You can compare this to the 1” overhang typical of the laminate countertops you are looking to replace with granite.

How far can countertop overhang?

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.

What size plywood should I use for countertops?

The average thickness of plywood sheets used for backer on counter tops is 3/4-inch. This provides adequate support for a wide range of finish materials. You can use it as a stand-alone product as well as a finish-type plywood if it has a laminate finish that you can paint or finish according to personal preference.

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.

How much overhang should a kitchen island have without support?

Solid surface tops that are ½” 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.

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.