It's 5/8 flooring with a 4mm wear layer. I prefer heftier, 3/4" or very close and haven't used it )

That said?

"Engineered hardwood thickness varies, but most products range from 3/8 inch to 5/8 inch (9mm to 16mm), with the total thickness being a combination of a thin natural hardwood veneer on top and a plywood or high-density fiberboard (HDF) core. The wear layer, which is the natural hardwood on top, determines how many times the floor can be sanded and refinished. Thicker floors offer better stability and a more luxurious aesthetic, while thinner options are more cost-effective and suitable for height-restricted areas. Key components and thickness:

• Hardwood Veneer (Wear Layer): This is the top, visible layer of natural hardwood. Its thickness varies significantly, with high-quality products featuring a 3mm or 4mm wear layer, while some may have as little as 1.5mm or as much as 8mm. The wear layer's thickness is a key factor in the floor's durability and ability to be refinished.
• Core: The core is made of layers of plywood or HDF that provide stability. The thickness of the core makes up the bulk of the total thickness of the engineered plank.

Factors to consider when choosing thickness:

• Refinishing Capability: A thicker wear layer (e.g., 3-4mm or more) allows for multiple sandings and refinishing, similar to solid hardwood.
• Durability & Stability: Thicker engineered planks with more layers are generally more stable and can better withstand changes in humidity, making them suitable for a wider range of locations.
• Traffic & Usage: For high-traffic areas, a thicker, high-quality floor is recommended to ensure longevity.
• Aesthetics & Feel: Thicker planks can offer a more luxurious look and a more substantial feel underfoot.
• Cost:

Thank you Jan!