Quartz 2017-03-06T17:31:36+00:00


Capitol Granite fabricates and installs engineered stone. We specialize in Cambria, Caesarstone, Silestone, Viatera, and Zodiaq quartz surface material and Marquis enhanced marble surface material.

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Beautiful Cambria Kitchen Countertop with Broken EdgingQuartz products are in high demand impart to their natural beauty as well as natural strength and durability. Quartz may be used in both horizontal and vertical applications to include countertops, wall cladding, vanity tops, and retail counters.  Dupont™ quartz surfaces, and most others, come with a 10 year limited product warranty and are available in 2 cm or 3 cm thickness in sheets of 52”x118”, 55”x120”, and 63”x120”. Because quartz blend surfaces contain advanced polymers they are 3 to 7 times stronger than most natural stone countertops. It resists chips, scratches, crack, heat, and stains, and unlike granite, quartz does not require polishing or sealing. Quartz can be machined, sandblasted, and inlaid as suitable for each individual application.


Quartz Countertop Materials

Cambria Brittanicca Kitchen and Bathroom Countertop Color

Cambria Quartz


Caesarstone Nougat Kitchen and Bathroom Countertop Color

Caesarstone Quartz


Silestone Sierra Marde Kitchen and Bathroom Countertop Color

Silestone Quartz


LG Viatera Lava Ice Kitchen and Bathroom Countertop Color

LG Viatera Quartz


Zodiaq Galaxy Black Kitchen and Bathroom Countertop Color



Marquis Cafe Kitchen and Bathroom Countertop Color

Marquis Cultured Marble





What is Quartz?

Quartz kitchen countertops consists of 93% quartz and 7% resins. These are often called engineered countertops since advanced engineering techniques are implemented for manufacturing quartz kitchen countertops. In this process, ground pulverized quartz is mixed with binder resins. Additional coloring pigments may also be added to achieve the desired color of quartz countertops. The biggest advantage of quartz countertops is that they are extremely hard. In fact, only three other materials beat quartz in hardness and these materials are diamond, sapphires and topaz. The binder resins give quartz the desired strength and texture that are perfect for kitchen countertops, bathroom vanities, and nearly any surface or countertop.

There are many different colors types and brands to choose from when it comes to quartz countertops, such as: Cambria, Caesarstone, ECO, Marquis, Silestone, Viatera, and Zodiaq. Capitol Granite provides all of these types of quartz, and can custom fabricate them for any countertop or surface need that you may have. Back to the top.

Why choose Quartz Countertops for Kitchens?

There are several reasons why you might want to go for quartz countertops instead of any other countertop. Stone or granite countertops only offer you limited options in terms of color, texture and designs. On the other hand, quartz kitchen countertop options are simply myriad. With a quartz countertop you can select any color of your choice, from pristine white to bold orange to cherry red. What more, the shade that you select from the catalog in the store matches exactly with the piece that arrives at your home. Thus, surprises are avoided at the time of delivery, which is often the case with stone countertop, owing to extensive variation in shades of natural stone. Moreover, you need not go for a plain countertop as you can select from a plethora of patterns available in quartz countertops. These include marble or other natural stone patterns.

Quartz provides you a long-lasting option for your countertop or vanity. It requires little maintenance and can keep on shining for years to come. Its extraordinary hardness makes it virtually scratch proof. Also, its non porous nature does not allow anything to seep in and cause staining. This property is very useful for kitchen countertops which are subjected to inordinate amount of spillage. Since, it is non porous you also need not have to seal it, unlike granite countertops which require frequent sealing. Quartz also inhibits growth of mold and mildew as it is fortified with an antimicrobial compound during the manufacturing process. Back to the top.

Quartz Installation Requirements

  • Quartz is not recommended for exterior applications, most warranties do not cover exterior applications
  • Cabinet tops should be level and true within 1/8 inch of a flat surface
  • Use a flexible adhesive to adhere quartz to the support. Running a bead of silicone around the perimeter of the stone and the adjoining material will yield better results
  • Only use flexible adhesive to fasten to wood, steel, ceramic, tile, etc.
  • Apply quartz backsplashes using flexible adhesive
  • Do not install over old countertops

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Quartz Installation Support

  • Outside perimeter (max length = 118”) support is adequate for countertops supported on four sides with depths less than 26”
  • For quartz countertops supported on four sides with depths greater than 26”, in addition to the outside perimeter support, every 36” additional front and back underside support is needed
  • Countertops supported on 3 sides (i.e., dishwasher design restriction), a substrate is required. For 2 cm thick slabs that are less than 26”, a 2” x 4” substrate is required at widths greater than 24”. For 3 cm thick slabs less than 26” deep, a 2” x 4” substrate is require at widths greater that 36”
  • For cabinets that overhang the support structure, like cabinets, additional support may be needed. Evenly spaced corbels at 36” or less are recommended for 2 cm quartz countertops hanging 12”-18” over cabinets as well as 3 cm overhanging 15”-24”. For 2cm countertops hanging more than 18”, or 3 cm countertops that overhang the cabinet greater than 24”, a solid substrate and support leg(s) or columns are suggested.
  • Both 2 cm and 3 cm thick countertops may require half wall overhangs for service bars. Half wall overhangs less than 1/3 the depth of the top do not need any additional support. Corbels are necessary to support all other half wall overhangs at ¾ of the total overhang depth with a maximum spacing of 36”, and must be places at wall studs or bearing structure.
  • Acceptable support materials include: ¾” plywood, structural steel, and 2”x6” materials. Particle board is not acceptable for support.

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Quartz Installation Cut-out Requirements

  • All quartz countertop cutouts require radius corners, with the exception of square corners at install site on cook top and drop-in sink bowl applications if needed.
  • A flexible adhesive should be used for electrical cutouts in backsplashes, applied on the entire perimeter of the cutout to lock the backsplash to the wall.
  • Quartz countertops should be designed to provide 1/8” gap to allow for additional clearance at sides between appliance/sink and top opening, also making it possible for expansion.
  • Using fastening clips, under mount sinks must be secured to the underside of the quartz countertop. Only using an adhesive for sink support is not recommended. Sink support cradles attached to the perimeter of walls or cabinets is okay.

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Quartz Seam Requirements

  • All field seams should be connected with a two-part epoxy
  • Field seams must be completely supported, as well as any seam extending into the overhang.

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What is Cambria?

Cambria is natural quartz that is identified by its superior strength and beauty. Because it is mined from the earth the look and feel of granite is achieved, but Cambria is non-porous which reduces potential bacteria growth from absorbing into the surface and makes maintenance simple. Cambria is extremely resistant to staining and needn’t be sealed, polished, or reconditioned, simply wash it with warm water. Back to the top.

What is Silestone?

Silestone by Cosentino® is natural quartz. It is hard, dense and non-porous. As a revolutionary stone it delivers it all: versatility, reliability and consistency. The combination of beauty and durability makes Silestone a versatile surface ideal for countertops, vanity tops, flooring, walls, shower enclosures, backsplashes, bathtub surrounds and more. Silestone is scratch-resistant, stain-resistant and scorch-resistant, perfect for high-traffic areas in the home. Back to the top.

Is Viatera man-made?

Yes, although Viatera is composed of 93% natural quartz it is a man-made stone blended with polymer resins and colorfast pigments by LG Hausys Surfaces. Back to the top.

Is Zodiaq made with quartz?

DuPont™ Zodiaq is made with pure quartz crystals, giving it exceptional toughness and hardness. Zodiaq quartz countertops are incredibly durable and resistant to heat and scratches. Back to the top.

What do I need to know about Caesarstone?

The manufacturing process blends raw materials at a ratio of up to 93% natural quartz aggregates with pigments and polymer resins. CaesarStone is non-porous, scratch resistant, and highly resistant to stains. CaesarStone is globally recognized for its simplified fabrication and installation processes that enable cost-effective solutions because it can be installed in thinner forms to save weight, or in larger sections to reduce the amount of joints on a surface. Back to the top.