A 30mm thick quartz worktop can endure more pressure on a single point versus a 20mm thick quartz worktop. Although there is nothing wrong with opting for a 20mm worktop, you may choose the thicker 30mm option if you are planning to do a lot of daily food preparation with a variety of different kitchen equipment.
Differences Between 20mm & 30mm Quartz Worktops
Quartz Worktop Strength
Quartz Worktop Durability
Both 20mm and 30mm quartz worktops are considered durable, let’s get that out there from the onset. However, a 30mm worktop offers a chunkier look which can add elegance to a kitchen. For example, a traditional cottage style kitchen with visible thick wooden beams would greatly suit a thicker worktop. On the other hand, for a modern and contemporary style kitchen, a 20mm worktop can work wonders.
Quartz Worktop Structural Security
Structural security of a kitchen worktop is another important factor to consider when selecting what quartz worktop thickness to go for. A 30mm quartz worktop has higher structural security versus a 20mm worktop. As a result of this, a 30mm worktop will allow for 300mm of unsupported overhang – this is perfect for kitchens that have a breakfast bar. With a 20mm worktop thickness, the maximum unsupported overhand is 250mm, which is actually plenty of space to sit and eat your meals at. Being able to have a larger unsupported overhang, a 30mm worktop helps in sustaining the total worktop balance and overall load of kitchen equipment.
Quartz Worktop Usage
30mm quartz worktops are great for kitchens, bathrooms and even flooring. Where 20mm quartz worktops really shine is when used for splashbacks, upstands, windowsills and even slim and sleek kitchen islands. With 20mm worktops being lighter in weight than 30mm worktops, you can comfortably use them for a variety of different applications. So, if you want to go for a thicker 30mm quartz as your kitchen worktop for the elegance factor then consider using 20mm for other areas as mentioned earlier for a sleek finish to your kitchen.
Sinks & Hobs
In a nutshell, 30mm quartz worktops provide wider support for modern sinks and recessed hobs when compared to 20mm worktops. As 30mm quartz worktops are stronger, tougher and overall, more durable, they can endure any sized kitchen sink or hob without fuss.
More information can be found in part two of this post – 20mm Vs. 30mm Quartz Worktop Thickness.
We have a gorgeous selection of Quartz worktops available in both 20mm and 30mm thickness, browse through our range of colours – https://sharpstonegranite.co.uk/quartz-worktops/#colours
If you need further assistance on making your choice of thickness then please get in touch.
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Harlow, Essex, CM17 0RR
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Sharpstone absolutely pulled it out the bag for us. After being let down by another company last minute, the team at Sharpstone sourced the stone we wanted despite major supply issues, templated and fitted in fast. The quality and attention to detail is incredible and the overall experience was immaculate.
We’re so happy with our amazing worktops! Such a quick and easy process. Jack came out to template and within the week we had fantastic worktops. Would definitely recommend.
Sharpstone were recommended to us, and what a great recommendation! From the sale, to templating and then to the fit, the whole team were friendly, helpful and patient throughout. We are over the moon with our new worktop, what a great service. Thank You!
Provided a brilliant service and excellent quality quartz for a great price. They were very accommodating with appointments and all staff were friendly and approachable. Paul in sales was excellent and I couldn’t ask for a better service.

















