The best thickness for a quartz kitchen countertop depends on several factors, including aesthetics, durability, and the overall design of your kitchen. Generally, quartz countertops are available in thicknesses ranging from 12mm to 30mm, but the most common thicknesses are 15mm, 20mm, and 30mm. Among the options you provided (15mm, 18mm, and 20mm), 20mm is often recommended as the standard thickness for quartz kitchen countertops for the following reasons:
Durability: A 20mm thickness provides a sturdy and durable surface that can withstand the daily wear and tear of a kitchen. Thicker countertops are less prone to cracking or chipping.
Stability: The extra thickness offers better stability and support for heavy objects, such as large pots and appliances, reducing the risk of damage to the countertop.
Aesthetics: A 20mm thickness provides a substantial and premium appearance to the countertop, enhancing the overall visual appeal of the kitchen.
Edge Profile Options: With a 20mm thickness, you have more edge profile options available. Thicker countertops allow for more decorative edge styles, giving you additional customization choices.
Resale Value: A thicker countertop can add perceived value to your kitchen, which can be beneficial if you plan to sell your home in the future.
While 20mm is a popular and versatile choice, the best thickness ultimately depends on your personal preferences and the specific requirements of your kitchen. Thinner options like 15mm or 18mm may be suitable for some kitchen designs, especially in more modern or minimalist settings. However, keep in mind that thinner countertops may have some limitations in terms of unsupported overhangs and overall durability.
Before making a decision, I recommend discussing your preferences and requirements with a reputable quartz countertop supplier or kitchen designer. They can provide you with more detailed guidance and help you select the best thickness that complements your kitchen's style and meets your functional needs.