The Insider's Guide to Buying Countertops

By Steven Nenzel, President — Rock-It Surfaces Inc.

I've been fabricating and installing countertops in San Diego for over 20 years. In that time I've helped thousands of homeowners navigate one of the most confusing purchases they'll make in a remodel — and I've seen every mistake in the book. This guide is my honest, no-nonsense breakdown of every major countertop material. Not a sales pitch. Just what I'd tell a friend standing in my showroom asking "what should I get?"

Quartz — The Smart Choice for Most Kitchens

Quartz is the most popular countertop material we install, and for good reason. It's engineered from roughly 90–95% ground quartz crystals bound with resin, which gives it a critical advantage over natural stone: it's completely non-porous. That means no sealing. Ever.

The surface resists staining, doesn't harbor bacteria, and holds up beautifully to the daily punishment of a busy kitchen. The color and pattern options are extraordinary — modern quartz convincingly mimics marble, quartzite, and granite at a fraction of the maintenance burden.

One thing most dealers won't tell you: Never use quartz outdoors. Despite manufacturers' claims of UV resistance, sustained direct sunlight will break down the resin binders over time and cause the surface to discolor and delaminate. For outdoor kitchens, look at Dekton instead.

Best for: High-use family kitchens, homeowners who don't want any maintenance, anyone who loves the look of marble but not the upkeep.

Granite — The Original Premium Countertop

Granite is an igneous rock formed from cooled magma deep in the earth. It's composed primarily of quartz, feldspar, and mica minerals that interlock to create one of the hardest natural surfaces you can put in a kitchen. After 20 years, what I love most about granite is that no two slabs are ever identical. That's not marketing language — it's geology. The slab you choose is genuinely one of a kind.

What most buyers don't know about resined slabs: Today nearly every granite slab is treated with an epoxy resin before polishing. This fills the natural micro-fissures and pores in the stone, producing a superior finish and dramatically better stain resistance. This is a good thing.

Maintenance reality: Granite requires periodic sealing — typically once a year for most colors. It takes 15 minutes and a $20 bottle of sealer. Don't let anyone tell you it's a major burden.

Best for: Homeowners who love natural uniqueness, want heat resistance, and are comfortable with minimal annual maintenance.

Quartzite — Beautiful, But Know What You're Buying

Quartzite is the material that creates the most confusion for homeowners, because two slabs sold under the same name can perform very differently. When it's the right stone for the right customer it's extraordinary. When someone buys it without understanding its characteristics, it can be a frustrating experience.

Quartzite begins as sandstone. Over millions of years, extreme heat and pressure cause the sand grains to fuse and recrystallize into an interlocking mosaic of quartz crystals — typically rating 7 on the Mohs scale, harder than granite. But that metamorphic process exists on a spectrum. A slab that was metamorphosed more completely will have a dramatically tighter crystal structure with minimal porosity. A less completely metamorphosed slab sits somewhere between sandstone and fully recrystallized quartzite. Same name, very different performance.

Why white quartzites tend to be more porous:

White Macaubas and Calacatta Macaubas underwent less intense metamorphism and developed wider capillary channels — meaning they absorb liquids more readily. By contrast, highly metamorphosed stones like Taj Mahal and Sea Pearl formed very tight crystal bonds and exhibit minimal porosity.

The resin factor:

Quartzite slabs vary considerably in how much epoxy resin has been applied during processing. Epoxy resin breaks down under UV light — this is why I do not recommend quartzite for outdoor applications in direct sunlight.

Sealing — The Most Important Thing You Can Do

If you choose quartzite — especially one of the whiter, more porous varieties — proper sealing is not optional. It is the single most important factor in how your countertop performs over the life of your home.

Here is what I tell every quartzite customer without exception:

First, the initial seal must be done correctly before installation or immediately after. A penetrating impregnating sealer needs to be applied to a clean, dry surface, allowed to fully absorb, and properly buffed. A rushed or incomplete first application leaves the stone vulnerable from day one. At Rock-It Surfaces we take this step seriously because we know what happens when it is skipped.

Second, regular resealing is not a burden — it is maintenance. For most quartzites, once a year with a quality penetrating sealer takes 20 minutes and costs less than $30. For the whiter, more porous varieties like White Macaubas and Calacatta Macaubas, we recommend sealing every 6 months. Mark it on your calendar the way you would an HVAC filter change.

Third, even a well-sealed porous quartzite requires prompt attention to spills — particularly red wine, coffee, citrus juice, and cooking oils. Sealer is a barrier, not a force field. A spill wiped up within a few minutes on a properly sealed surface will not stain. The same spill left to sit for an hour on a poorly sealed surface may leave a permanent mark.

The homeowners who love their quartzite countertops long-term are the ones who understood this from the beginning. The ones who regret it are the ones who were not told.

Best for: Design-focused homeowners who understand the maintenance requirements and specifically want genuine natural stone.

Dekton — The Best of Natural Stone Without the Compromises

Dekton is an ultra-compact sintered surface made by fusing raw materials under extreme heat and pressure. It's completely non-porous, scratch resistant, heat resistant, and requires zero maintenance. No sealing. No resealing. No special cleaners. Nothing.

For interior kitchens:

Dekton holds up beautifully to daily kitchen use — hot pans, acidic foods, heavy cutting activity — and looks exactly the same ten years after installation as the day it was put in.

For quartzite lovers:

Dekton's Natural Collection produces colors that closely replicate the look of Taj Mahal and other premium quartzites — with complete consistency across every square foot of the slab. No resin patches. No fissures. No porosity.

For outdoor kitchens:

Dekton is the countertop material I recommend without reservation for outdoor kitchens and BBQ areas. It performs identically indoors and outdoors, season after season, in San Diego's direct sun with nothing required from you.

Best for: Interior kitchens where zero maintenance and premium aesthetics are the priority. Outdoor kitchens and BBQ areas. Homeowners who love the quartzite look but want none of the upkeep.

Marble — Gorgeous, High-Maintenance, and Worth It for the Right Person

Marble registers 2–3 on the Mohs hardness scale — softer than granite, quartzite, and even some quartz. It will scratch. It will etch from acidic liquids like lemon juice, wine, and coffee. It needs sealing. I'm not trying to talk you out of marble — it's genuinely one of the most beautiful materials in the world. But I want you to go in with accurate expectations.

Marble makes perfect sense in a bathroom vanity or a low-use kitchen where aesthetics take priority over durability. It makes less sense on a heavily used family kitchen island.

Questions I Get Asked Most Often

How thick should my countertop be?

For quartz, granite, quartzite, and marble we work with 3cm as our standard. Dekton is manufactured in 2cm thickness only and requires a mitered edge detail to achieve a thicker appearance.

Do I need to worry about seams?

Not every countertop installation requires seams — and understanding when seams can be avoided is one of the most valuable things I can share with a homeowner before they buy.

With 3cm material — our standard for quartz, granite, quartzite, and marble — it is often possible to fabricate an L-shaped countertop as a single continuous piece with no seam at the inside corner. We do this by cutting a small radius on the inside corner rather than a sharp 90-degree angle. That small radius distributes the stress across the turn in the stone instead of concentrating it at a single point, which means the piece is structurally sound and can be installed without a seam. The result is a cleaner, more seamless look with no visible joint at the corner.

This is one of the most underappreciated advantages of 3cm material and one of the reasons we recommend it as our standard for most kitchen applications.

With 2cm material — which is what Dekton is manufactured in — the situation is different. Because the material is thinner, all major quartz manufacturers and most fabricators require seams at inside corners on 2cm and mitered builds. An inside corner on a 2cm build is a structural stress point. Without a seam to relieve that stress, thermal movement, cabinet settling, or impact can crack the countertop at that corner. A correctly placed seam at the inside corner is actually a structural requirement, not a design preference.

This is another strong reason to specify 3cm from the start — more flexibility, fewer seams, and the ability to turn corners without joints. If you are considering Dekton or any 2cm build, discuss inside corner seam placement with us before templating so expectations are clear.

How long does installation take?

At Rock-It Surfaces our standard process runs approximately 7 business days from template to installation.

One Last Thing

The most important advice I can give you after 20 years in this business: buy from a fabricator, not a retailer. When you buy from a shop that fabricates and installs their own work, you have one relationship and one accountable party for the entire project. When something needs to be resolved, you call the same people who cut and installed your countertops. That is how we have operated since day one at Rock-It Surfaces.

Visit our San Marcos showroom at 947 Rancheros Dr, San Marcos, CA 92069 with a cabinet door, drawer front, or flooring sample and we'll help you choose the right countertop for your home. Free consultations available. Same-day quotes with your measurements.