Which Quartz Worktop Thickness Is Best: 20mm or 30mm? & Countertops

Do you want to choose quartz worktops for your kitchen or bathroom? It is important to pick the right thickness. Quartz worktop thickness will impact the appearance and functionality of your space. The common thicknesses for quartz work surfaces are 20mm and 30mm. But which is correct for you?

This blog will guide you on the advantages and disadvantages of 20mm and 30mm quartz worktops and help you to make good decisions. Whether you are creating a new kitchen or refurbishing the one you already have, knowing how thick the quartz kitchen worktops are will make your choice stylish as well as practical.

20mm Quartz  Worktops

20mm quartz worktops are perfect for those homeowners seeking a contemporary and modern appearance. This thinner worktop provides a minimalist and streamlined appearance. Homeowners prefer the thin profile of 20mm kitchen worktops because they can have a premium appearance.

The 20mm depth is a strong material. The shallow depth will give the worktop an open feel, particularly in smaller rooms where a deeper worktop would be wonderful. A 20mm quartz worktop will guarantee that the room feels light and airy when designing a small kitchen or bathroom.

30mm Quartz Worktops

30mm worktops have a deeper and premium feel. Should you desire a bold and opulent appearance, use this thickness. A 30mm quartz worktop provides sophistication and longevity. It improves the traditional or luxurious look and feel of your kitchen or bathroom.

The extra depth of a 30mm kitchen worktop creates a feeling of permanence. It’s stable and strong, perfect for high-usage purposes. If you find yourself prepping a lot of food or using the area as a focal point for meeting with friends and family, a 30mm worktop will give you an added increase of strength and stability. The higher surface is less likely to crack under stress as well so it is a better option for those with hectic kitchens.

Difference Between 20mm and 30mm Quartz Worktops

• Strength: A 30mm worktop can handle more pressure than a 20mm one. While 20mm worktops are still strong, a thicker option is better for kitchens with heavy food preparation.

• Durability & Style: Both thicknesses are durable. A 30mm worktop looks chunkier and more luxurious, while a 20mm worktop gives a sleek, modern feel.

• Support & Overhangs: A 30mm worktop offers better support, allowing a 300mm overhang—ideal for breakfast bars and seating areas. A 20mm worktop allows up to 250mm, which is still comfortable for meals. The extra thickness of a 30mm worktop also helps balance kitchen furniture.

• Uses: A 30mm quartz worktop is great for kitchen and bathroom counters, as well as flooring. A 20mm worktop is lighter and works well for splashbacks, upstands, and window sills. Choose 30mm for a luxurious look and 20mm for a modern, stylish touch.

• Sink & Hob Support: A 30mm worktop provides stronger support for sinks and hobs. It is tougher and can handle any size of kitchen hob or sink without issues.
  

Which One Is Right for You?

• Aesthetic Appeal

The overall appearance you want in your bathroom or kitchen is one of the main things. A 20mm quartz worktop provides a neat and light appearance. It is perfect for minimalist and modern designs. If you want the latest and less bulky look, 20mm is an excellent option.

If you want a vintage and ageless appearance, go for a 30mm worktop. It has a slightly deeper depth which makes it feel luxurious and premium looking. A substantial surface can be used on bigger kitchens or bathrooms where the aim is to create a dramatic effect.

• Kitchen Worktop Depth and Functionality

Consider how you will use the worktop. Will it be a casual cook area or a busy area where heavy work is done on a daily basis? If you want extra space for cooking, a 30mm kitchen worktop provides greater strength and durability.

A 20mm worktop will be okay for light use but will not handle hard knocks effectively. If you require a deeper stone work surface for functional purposes, a 30mm worktop depth is useful.

• Cost and Budget

The price variation between 20mm and 30mm quartz worktops can be large. A 30mm worktop will cost a lot because there is huge material is involved. If budget is an issue, a 20mm worktop may be better.

But if you have the budget for it, then a 30mm worktop could be a worthwhile investment in the long run because of its durability and sturdy feel. At the end of the day, whether to get 20mm or 30mm will really depend on your budget and what you think of the worktop’s durability and aesthetic attraction.

Read Also: How Much Do Quartz Worktops Cost in 2025?

• Space Size and Proportions

Your space dimension is an important factor in your choice. A 20mm worktop can provide an illusion of additional space in smaller bathrooms or kitchens. The lower profile will not dominate small spaces and can make the room feel spacious and bright.

A 30mm worktop is appropriate for big kitchens. The thicker worktop has the ability to balance room proportions and the area around it. In larger rooms, a 30mm worktop will suit the overall design without standing out.

• Maintenance and Durability

Quartz is low-maintenance and strong. 20mm and 30mm quartz work surfaces are resistant to scratches and heat. Thicker surfaces are resistant to physical damage, but they are all strong. If you’re worried about damage in the long run, a 30mm worktop provides an extra level of security and peace of mind.

20mm worktops are durable, but they might not sustain heavy impacts as well as 30mm. If your kitchen is heavily used or you are likely to be dropping heavy weights, the 30mm worktop provides a little extra strength.

Quartz Kitchen Work Surfaces: The Right Fit for Your Home

Regardless of what thickness you go for, quartz kitchen work surfaces are the perfect option. 20mm and 30mm worktops add sophistication, resilience and style to your environment. The point is to take into consideration the appearance you want, the purpose you’ll put the worktop to, and your finances.

If you want a modern and streamlined look with a lighter weight, 20mm quartz worktops will be perfect. Quartz worktops are a wonderful option for kitchen and bathroom worktops. It’s functional and beautiful. Quartz provides the ideal balance for any home renovation.

Final Thoughts

Think about the function of the worktop in your entire style, budget, and usage needs when choosing the thickness of the Quartz. A 30mm kitchen worktop possesses strength and a luxurious look, whereas a 20mm worktop has a modern and stylish look. These options will bring sophistication and good quality to your house. So, choose wisely! 

Frequently Asked Question

Q1. How thick should a quartz worktop be?  

Quartz worktops typically come in 20mm or 30mm thickness. While 30mm offers a premium look and durability, 20mm is a sleek, modern option often reinforced for strength.  

Q2. Is thick or thin quartz countertops better?  

Thicker (30mm) quartz is stronger, more durable, and ideal for high-use areas. Thinner (20mm) quartz works well for a modern aesthetic but may need extra support for durability.  

Q3. Is 2cm or 3cm quartz worktops better?  

A 3cm (30mm) worktop is more durable and doesn’t need additional support. A 2cm (20mm) option is lighter and cost-effective but may require reinforcement for stability.  

Q4. Is thicker quartz more expensive?  

Yes, thicker quartz (30mm) is more expensive due to the extra material and increased durability. However, the price difference varies by brand and design.  

Q5. How much is a 30mm quartz worktop?  

A 30mm quartz worktop typically costs between £250–£500 per square metre, depending on the brand, colour, and supplier.  

Q6. How much does 30 sq ft of quartz countertop cost?  

The cost for 30 sq ft of quartz worktop ranges from £700 to £1,500, depending on the quality, thickness, and supplier.  

Q7. Can you stand on a 20mm quartz worktop?  

No, standing on a 20mm quartz worktop is not recommended as it may crack under concentrated weight, especially near edges or unsupported areas.