Solid wood or engineered wood: how to make an informed choice

Bois massif ou bois d’ingénierie : comment faire un choix éclairé

Choosing between solid wood and engineered wood flooring isn't just a matter of aesthetic preference. Behind the natural appearance of these two options lie significant differences in structure, performance, and longevity. Here's what you need to know, according to the technical guidelines of the National Wood Flooring Association (NWFA) .

Photo: European White Oak CPL Solutions, engineered wood 9/16" x 7.5" x 6', NATURA stain, classic grade, brushed finish | Credit: Sarah Dagenais photos | Design: M ton intérieur | Project: Justine Brouillette

1. Composition and manufacturing

Solid wood : This refers to a single piece of hardwood, typically ¾" thick, machined from a single board. It is valued for its authenticity and timeless appearance.
Engineered wood : This type of flooring consists of a top layer (called "wear surface") of real hardwood, glued to a multi-ply, plywood or HDF backing.

2. Stability and behavior in humid conditions

Wood is a hygroscopic material, meaning it reacts to changes in humidity. According to the NWFA, this property directly influences the floor's performance over time:

Solid : More prone to warping, bulging or shrinkage, especially in unstable environments (basement, heated floor).
Engineering : Thanks to its cross-grain structure, engineered wood is much more resistant to hygrometric variations, making it suitable for more demanding environments.

3. Length of the boards

Engineered wood manufacturers can offer longer planks (often between 6 and 10 feet), creating a more fluid and modern aesthetic, especially in open spaces. Solid wood flooring, which is more prone to warping, is generally limited to shorter lengths.

Photo: European White Oak CPL Solutions, engineered wood 9/16" x 7.5" x 6', MONTANEA stain, prima grade, smooth finish | Credit: Sarah Dagenais photos | Design: Blanc Marine Living | Project: Blanc Marine Studio

4. Wear surface and sandblasting

According to NWFA recommendations, a 3/4" solid hardwood floor typically offers a wear surface of 5 to 7 mm , allowing for 3 to 4 sandings during its useful life.

Engineered wood is available in various wear surface thicknesses. A product with a 6 mm hardwood surface is equivalent to solid wood in terms of durability and the possibility of sanding. The standard is generally 3 to 4 mm of wear surface, allowing for 2 to 3 sandings during its lifespan.

5. Installation Methods

Solid : Requires nailing to a plywood subfloor. Not recommended for concrete or floating installations.
Engineering : More versatile, it can be nailed, glued, or installed as a floating floor , and adapts to several types of subfloors, including concrete. It is also compatible with hydronic or electric radiant floor heating systems , according to technical recommendations.

Photo: European White Oak CPL Solutions, engineered wood 9/16" x 6" x 6', classic grade, brushed finish | Credit: Sarah Dagenais Photos | Design: M ton intérieur | Project: Construction Marc Beaulieu et fils

6. Residential vs. Commercial: What differences should be considered?

The constraints and priorities vary depending on the type of project. Here are some important distinctions:

Residential context

High-end aesthetics : Thanks to the availability of long and wide planks , engineered wood offers a more uniform, contemporary, and luxurious visual appearance. This style is highly sought after in modern homes, especially open-concept layouts.
Installation versatility : Engineered wood can be installed on concrete, existing subfloors or heated floors , making renovations, condos and new constructions easier without technical compromise.
Comfort and durability : Offered with a wear surface of up to 6 mm, it is as durable and repairable as solid wood, while being more stable in the face of seasonal variations (heating in winter, air conditioning in summer).
Added value : The clean, high-end appearance of long engineered wood planks enhances the perceived value of a residential space, while ensuring stable long-term performance.

Photo: American Walnut, CPL Solutions, 3/4" x 5" solid hardwood, classic, smooth finish | Project: Stikeman Elliott

Business context

Essential dimensional stability : Engineered wood is ideal for medium traffic environments, variable climatic conditions or heated floors.
Suitable wear surface : A 3 to 4 mm layer allows for several sandblasting repairs, which extends the lifespan in public spaces.
Substrate compatibility : It installs effectively on concrete, acoustic membrane or technical surfaces, often found in commercial projects.
Optimizing installation time : Floating or glued installation reduces construction time, an advantage for commercial premises that need to remain functional quickly.

Conclusion

Engineered wood is not a second-rate product; it is a technical solution designed to enhance the performance of hardwood in modern environments. For customers who want long planks, increased stability, and durability comparable to solid wood, it is often the best compromise between aesthetics and performance.