The short answer: Quartz is the easiest to live with day to day because it doesn’t need sealing, but it doesn’t like direct heat. Granite handles heat well and every slab is one of a kind, though some slabs benefit from sealing. Porcelain slabs shrug off heat and stains, but they’re thinner and harder to fabricate, so edge chips and installer skill matter more. In California, there’s one more factor this year: regulators are working on a rule that would stop the fabrication and installation of most engineered quartz, so ask about it before you commit to a slab.
Picking a countertop feels like it should be about color. Then you start reading, and every material seems to have a catch. Quartz can scorch. Granite needs sealing (or does it?). Porcelain chips. And now there’s news about California and quartz.
Here’s a calm, practical look at how the three compare, what each one asks of you after it’s installed, what drives the price, and what’s happening with engineered stone rules in California.
What’s the difference between quartz, granite, and porcelain?
They look similar from across the room, but they’re made very differently:
- Quartz (engineered stone) is a manufactured slab made mostly of crushed quartz bound with resin and pigments. That’s why colors and patterns are so consistent.
- Granite is natural stone cut from a quarry. Every slab is different, and the color and movement are whatever nature put there.
- Porcelain slabs are fired ceramic, pressed into large thin sheets and baked at high heat. The pattern is often printed on the surface, so a marble look may only go so deep.
How do they compare day to day?
| Quartz | Granite | Porcelain slab | |
|---|---|---|---|
| Heat | Can be damaged by direct heat; use a trivet | Generally heat tolerant; a trivet is still smart | Very heat resistant |
| Stains | Non-porous; resists stains | Varies by slab; wipe spills promptly | Resists stains |
| Sealing | Not needed | Some slabs benefit from it | Not needed |
| Chips and scratches | Durable; edges can chip with a hard knock | Hard and durable; edges can chip | Hard surface, but thin edges and corners can chip |
| Look | Consistent color and pattern | One-of-a-kind natural pattern | Can mimic marble or concrete; pattern may be surface-only |
| Repairs | Small chips can be filled | Small chips can be filled | Chips are harder to hide, especially on printed patterns |
A few details are worth knowing before you choose.
Quartz and heat. Quartz makers are clear about this. One major manufacturer’s care guide says to always use a trivet or hot pad between the countertop and any heat-generating device. It warns that sudden temperature changes or sustained heat, especially near edges and cutouts, can cause cracking, and that damage from thermal expansion isn’t covered by its warranty. The same guide says quartz never needs sealing and should be kept away from harsh chemicals like drain cleaners and paint strippers.
Granite and sealing. The Natural Stone Institute’s long-standing position is that most granite countertops don’t need to be sealed, especially if spills are wiped up after meals, but that sealing often makes sense and a quality sealer can last many years. Ask your fabricator whether your specific slab benefits from it. A slab that darkens quickly when water sits on it is a good candidate.
Porcelain and fabrication. Porcelain slabs are thinner and less forgiving to cut than stone. Edge profiles are often limited (a simple square or slightly eased edge is common), and a fabricator who works with porcelain regularly makes a real difference. If the pattern is printed on the surface, a chip on the edge may show a different color underneath.
Which one fits your kitchen? Keep reading. First, the part that’s new for 2026.
What’s happening with quartz countertops in California?
Engineered stone has been linked to silicosis, a serious and incurable lung disease, in workers who cut and polish it. According to NIOSH, engineered stone can contain more than 90 percent crystalline silica, compared with less than 45 percent in granite, and cutting it releases fine dust. California has been tightening the rules for the people who fabricate it:
| Date | What happened |
|---|---|
| October 2025 | The governor signed Senate Bill 20 (the STOP Act). It requires wet cutting, prohibits dry cutting, and creates a state certification program for stone fabrication shops. Certification applications begin January 1, 2027, and only certified shops will be able to buy slabs from suppliers. |
| May 2026 | The Cal/OSHA Standards Board voted to start rulemaking on a possible prohibition of engineered stone with more than 1 percent crystalline silica. |
| September to October 2026 | Cal/OSHA released draft emergency rules that would prohibit fabricating and installing artificial stone at or above that threshold, with a phase-out period for material already purchased. A revised draft in October clarified that natural stone that hasn’t been crushed or milled, fired ceramics, and porcelain tiles are excluded. |
As of early November 2026, the prohibition is still a draft. It has not been adopted, and no effective date has been set. The drafts are written for employers who fabricate and install the material. They don’t say anything about countertops already in homes.
What this means if you’re shopping now:
- If you love quartz, ask your fabricator and supplier how the proposed rule could affect your order, timing, and warranty.
- Ask whether the shop uses wet cutting methods, and after January 2027, whether it is state certified.
- If you’d rather avoid the uncertainty, granite, other natural stone, and porcelain slabs fall outside the current draft. If a product is sold as low-silica, the draft would require documentation, including lab testing, to show it’s under the limit.
Natural stone and porcelain still create dust when they’re cut, so worker protections under California’s existing silica standard apply to every fabrication shop. This is a workplace rule. Your installed countertop isn’t the hazard; the dust from cutting and grinding is.
What drives countertop cost?
Published national guides give wide ranges for installed countertops. Treat these as rough benchmarks, not local bids:
| Material | Published national installed range (per sq ft) | Source |
|---|---|---|
| Quartz | About $50 to $200+ | Fixr, updated January 2026 |
| Granite | About $40 to $150 | Fixr, updated January 2026 |
| Porcelain slab | About $50 to $120 | HomeGuide (undated) |
The material itself is only part of the bill. What moves the number:
- Slab grade and pattern. Rare granite colors and veined designer quartz cost more.
- Layout and seams. Islands, L-shapes, and long runs can mean more slabs and more seams.
- Edges and cutouts. Fancy edge profiles, undermount sink cutouts, and cooktop cutouts add labor.
- Backsplash. A full-height slab backsplash adds material and fabrication.
- Removal and reconnects. Tearing out old tops, and disconnecting and reconnecting the sink, faucet, and cooktop.
- Cabinet condition. Stone is heavy. Cabinets that are out of level or weak need attention first.
If countertops are part of a larger kitchen project, our guide to what drives the cost of a kitchen remodel in the Los Angeles area shows how they fit into the bigger budget.
Which countertop fits your kitchen?
| If you… | Consider |
|---|---|
| Want the lowest-maintenance surface and a consistent look | Quartz (and ask about the proposed California rule) |
| Cook a lot and set hot pans down without thinking | Granite or porcelain |
| Love one-of-a-kind natural patterns | Granite |
| Want a marble look without marble’s etching | Quartz or porcelain |
| Want an outdoor kitchen or a sunny spot | Granite or porcelain (check the manufacturer’s guidance) |
| Have busy kids and hard knocks at the edges | A thicker slab with an eased edge, in any material |
Can I replace countertops myself, or should I hire a pro?
You can usually handle: choosing the material, visiting slab yards, measuring roughly for a budget, clearing the kitchen, and doing everyday care.
Leave it to pros: templating, cutting, and installing stone or porcelain slabs. The slabs are heavy and easy to crack, and cutting them creates silica dust that requires wet methods and proper protection. A plumber or your contractor should handle the sink and faucet reconnection.
Watch for scope creep. Swapping countertops in place is usually simple. Moving the sink, adding an island with plumbing or power, or changing the layout turns it into a bigger project. Our guide to whether you need a permit to remodel your kitchen in California explains where that line usually falls.
Frequently asked questions
Is quartz better than granite? Neither is better for everyone. Quartz needs less care and looks consistent, but it doesn’t tolerate direct heat. Granite handles heat well and every slab is unique, but some slabs benefit from sealing.
Can you put a hot pan on quartz? Manufacturers say to use a trivet or hot pad. Sudden or sustained heat can crack or discolor quartz, and heat damage is often excluded from warranties.
Does granite need to be sealed? Not always. The Natural Stone Institute says most granite countertops don’t need sealing, but many slabs benefit from it. Ask your fabricator about your specific slab.
Is porcelain more durable than quartz? Porcelain handles heat and stains very well, but its thinner edges and corners can chip, and chips can be harder to hide. Quartz is more forgiving to fabricate and repair.
Is quartz being banned in California? Not yet. As of early November 2026, Cal/OSHA has a draft rule that would prohibit fabricating and installing engineered stone with more than 1 percent crystalline silica. It hasn’t been adopted, and the drafts don’t address countertops already installed in homes.
Planning new countertops or a full kitchen?
The right countertop depends on how you cook, how much care you want to give it, and what else is changing in the kitchen. Seeing slabs in person and getting a line-item price for the whole job makes the choice much easier.
De Sisto Construction, Inc. is a California licensed general contractor (CSLB #803545) serving greater Los Angeles and Orange County since 2001. Our kitchen and residential remodeling services come with step-by-step outlines and line-item costing, so you can compare materials and see exactly what’s included before work starts.
Give us a call at 562-425-1050 or email us at info@desistogc.com (dcidirect.net)