When you walk through a home improvement store, the flooring aisle presents dozens of options that look like wood. Most of them are not wood. They are photographs of wood — high-resolution images printed onto synthetic or composite substrates, laminated under a clear wear layer, and designed to approximate the appearance of real hardwood at a fraction of the cost. Understanding what each material actually is — its composition, its performance characteristics, and its impact on indoor air quality — gives you the knowledge to choose flooring with intention rather than assumption.
Solid Hardwood
Solid hardwood is exactly what it sounds like: a single piece of milled wood, typically 3/4 inch thick, with no adhesives, no composite layers, and no synthetic components. It does not off-gas volatile organic compounds. It can be sanded and refinished multiple times over a lifespan that routinely exceeds a century — meaning the floor you install today can serve your grandchildren. The finish is the variable: water-based polyurethane and hardwax oil finishes provide durable protection with minimal VOC emissions. Oil-modified polyurethane is more durable but emits more VOCs during application and curing.
Engineered Hardwood
Engineered hardwood has a real wood veneer — typically 2–6mm thick — bonded to a substrate of plywood or composite material. The quality of engineered hardwood depends almost entirely on two things: the thickness of the veneer (thicker veneers can be refinished) and the composition of the core. Plywood cores are dimensionally stable and resist moisture expansion well. Composite cores (MDF, HDF) may contain urea-formaldehyde adhesive that off-gasses for years. If choosing engineered hardwood, verify CARB Phase 2 compliance (the minimum regulatory standard for formaldehyde emissions) or ideally NAF (No Added Formaldehyde) certification on the core material.
Laminate and Luxury Vinyl Plank
Laminate is a high-resolution photograph of wood printed on a high-density fiberboard (HDF) core, covered with a clear melamine wear layer. It is not wood in any structural or biological sense. The HDF core uses formaldehyde-based resins as binders. It cannot be refinished — when the wear layer wears through, the floor is done. Typical lifespan: 10–20 years, depending on traffic and quality grade.
Luxury vinyl plank (LVP) is a PVC-based synthetic product with a printed image layer and a clear wear layer. It is completely waterproof, which makes it genuinely useful in basements, bathrooms, and kitchens where solid wood is not appropriate. The health considerations are the plasticizers historically used in PVC flooring (phthalates, now mostly replaced with DOTP) and VOC emissions during and after installation. If LVP is the right choice for your application, specify FloorScore or GREENGUARD Gold certified products, confirm the product is phthalate-free, and use click-lock floating installation to avoid adhesive VOCs.
Where To Start
- Know what you are buying. Solid, engineered, laminate, and LVP are fundamentally different materials.
- For engineered, check the core. CARB Phase 2 or NAF certification.
- For LVP, specify certifications. FloorScore or GREENGUARD Gold. Phthalate-free.
The floor is the largest surface in every room and one of the most intimate — children crawl on it, pets sleep on it, bare feet touch it daily. Knowing what it is made of, not just what it looks like, is the informed approach that leads to a choice you are confident in for the decades of its service life.
Do you know what your flooring is actually made of — and how was that choice made?