Engineered wood is made up of multiple core layers which provide structural stability, and a premium top layer (usually oak) which contributes to the overall strength and resilience of the plank.

A key factor to consider when choosing engineered wood is the depth of the overall plank and in particular, the thickness of the oak veneer.

How is engineered wood constructed?

It's easy to focus on the beautiful oak top layer, but the true engineering marvel lies beneath. The multiple core layers in engineered wood planks are constructed to provide exceptional structural stability. These layers, often made from fast-growing woods like birch, poplar or eucalyptus, are bonded together in a cross-ply construction.

This method significantly reduces the natural expansion and contraction that solid wood experiences with changes in temperature and humidity. This inherent stability makes engineered wood a fantastic choice for a wider range of environments within your home, including kitchens and over underfloor heating systems where solid wood might not be suitable. This robust core ensures your floor remains flat, even, and beautiful for years to come, providing a solid foundation for the premium oak veneer above.

Plank thickness options at Knot & Grain

At Knot & Grain we offer three choices of plank depth, each with different oak veneers:

14mm with a 3mm oak veneer. Available exclusively in our Rustic Plank

15mm with a 5mm oak veneer. Available in our Classic, Pristine and Heritage planks. All of our herringbone planks also come in this thickness.

20mm with a 6mm oak veneer. Our supreme plank, which is available in our Classic and Heritage planks. 

Why is plank thickness important?

1. Durability and longevity

Think about how you plan to care for your floor. A 3mm veneer is generally plenty durable for decades. However, if you foresee sanding down and refinishing regularly, go thicker – each sanding takes off about 0.5mm. How often you'll need to sand depends on how much you use the floor.

Existing subfloor levels: These may dictate the required thickness if an existing floor has been taken up, or you need to match other levels in your house. Always consult your fitter.

2. Value

An engineered wood with a thinner oak veneer will be less expensive than the same plank with a thicker veneer. However, remember that oak 'grade' will also impact the price (e.g. you can't compare a thicker rustic grade oak with a thinner Prime grade oak).

3. Sustainability

It could be considered that planks with a thicker oak veneer are more wasteful than a thinner veneer - after all, you only see the top layer and the majority sits beneath the surface never to be seen. However, thicker oak veneers are considered to have a longer lifespan. Remember that all engineered oak floors, regardless of veneer thickness, are designed for durability and resilience and all are a much more sustainable choice over floors containing plasticisers or PVC, such as vinyl or LVT tiles.

Beyond Thickness: Other Quality Considerations

While plank depth and veneer thickness are crucial, remember that the overall quality of engineered wood flooring is also influenced by other factors. The quality of the adhesive used to bond the layers, the precision of the milling and tongue-and-groove system, and the quality of the finish applied all contribute to the floor's performance and longevity. 

Don't underestimate the importance of consulting with flooring professionals and fitters. Their expertise can provide invaluable insights into subfloor conditions, installation requirements, and the best plank thickness to meet the demands of your environment. By taking a holistic approach and considering durability, value, sustainability, and your desired aesthetic, you can confidently select an engineered wood floor from Knot & Grain that will enhance your home for years to come.

In the end it boils down to how much you want to spend, how you live and how you plan to care for your floor. ✨