Solid vs. Engineered Hardwood: What I Tell Homeowners Before They Order Flooring
"Solid or engineered?" is one of the first questions I ask when someone walks into our Grayslake showroom talking about new floors. Most homeowners assume solid hardwood is the "real" one and engineered is some kind of compromise. That's not true, and it's the first thing I clear up before we go any further. Both are genuine wood on the surface you actually walk on. The difference is entirely in what's underneath, and that difference is what decides where the floor can go in your house, how long it lasts, and how many times you'll get to refinish it before you're back here shopping for new floors again.
Here's what I walk every client through before they order.
What You're Actually Buying
Solid hardwood is exactly what it sounds like: one solid piece of wood from top to bottom, usually about 3/4 inch thick. The surface you walk on is the same wood all the way through.
Engineered hardwood has a real hardwood layer on top, bonded to a core built from plywood or high-density fiberboard in layers that run in alternating directions. The top layer is the same species and finish you'd get with solid wood. We carry engineered lines from MSI, Mirage, and our other flooring partners in the showroom, and the top layer on a good one is indistinguishable from solid once it's finished and installed.
That layered core isn't a shortcut to save money. It's the entire reason engineered wood can do things solid wood can't.
The Real Difference Is How Wood Handles Moisture
Wood moves. It pulls moisture out of the air and swells, then dries out and shrinks, and it keeps doing that with the seasons for as long as the floor is in your home — which, if you've lived through a Chicago winter followed by a Lake County summer, you already understand better than most homeowners in milder climates.
Solid hardwood moves across the width of each board. In a dry January you may see small gaps open between boards. By August those gaps close, and if the floor was installed too tight, boards can cup or buckle. That's normal for solid wood, not a defect — it's also why solid hardwood needs an expansion gap at every wall and a home that stays within a reasonable humidity range year-round.
Engineered hardwood moves far less, because each layer of the core holds the layers next to it in place. That stability is what lets engineered wood go into places solid wood shouldn't:
- Over a concrete slab. Solid hardwood can't be nailed to concrete and is a poor fit over a slab. Engineered hardwood can be glued directly down.
- Below grade. We finish a lot of basements in Deerfield, Libertyville, and Vernon Hills, and this is exactly why solid hardwood is off the table down there — basement moisture conditions will not tolerate it. Engineered hardwood will, with a proper moisture barrier installed. If a basement remodel is somewhere in your plans, our basement remodeling team can walk the space with you before you commit to a floor.
- Over radiant heat. A floor heated from below goes through constant expansion cycles. Engineered handles this well. Solid generally does not.
- Wide planks. The wider the board, the more it moves across its width. Past about five inches, engineered is the smarter call.
Refinishing: Where Solid Hardwood Still Wins
Solid hardwood can be sanded and refinished many times over its life — six to ten refinishes is realistic, and a well-kept solid floor can last a century. It's why some of the older homes we work in around Winnetka, Kenilworth, and Lake Forest still have their original hardwood, decades of refinishing later.
Engineered hardwood can also be refinished, but only as many times as its top layer allows. That top layer is called the wear layer, and its thickness is the single most important spec to check when you're comparing engineered boards — and the one most homeowners never ask about.
As a general guide:
- Under 2 mm — not realistically refinishable. You can screen and recoat the surface, but not sand it down.
- 2 mm to 3 mm — one light refinish, done carefully.
- 4 mm to 6 mm — two or three refinishes. This is where a good engineered board lives.
A 6 mm wear layer on a stable core will outlast a thin solid floor in a tough location. A 1.5 mm wear layer is really a different product wearing the same name, and the price tag usually tells you which one you're looking at. When you're in our Grayslake showroom comparing boards, ask us to show you the wear layer spec on each one — it matters more than the price per square foot.
How I'd Choose for Your Home
Choose solid hardwood if the room is above grade, over a wood subfloor, in a home with fairly stable humidity, and you want a floor you can bring back to life again and again over the decades.
Choose engineered hardwood for concrete slabs, basements, radiant heat, wide planks, kitchens, or a climate with the kind of seasonal swings we get across Lake County and the North Shore. Then get the thickest wear layer your budget allows.
One thing that doesn't separate them: appearance. A quality engineered floor and a solid floor in the same species and finish look and feel the same underfoot once they're installed. If someone tells you they can spot the difference standing in a finished room, they're looking at the transitions, not the wood.
Before You Order
Confirm your subfloor and whether the room is above, on, or below grade — that alone rules out one option in a lot of homes. Check the wear layer in millimeters if you're considering engineered. Confirm which installation methods the manufacturer allows, because nail-down, glue-down, and floating floors aren't interchangeable. And plan your transitions early, especially anywhere hardwood meets tile in a kitchen or entryway — matching those later is difficult and sometimes impossible.
Installation method, expansion space and transitions should be confirmed before flooring is ordered.
Order about 10 percent extra for cuts and waste, and buy everything in one order. Wood is milled and finished in batches, and color can vary noticeably batch to batch.
If you're not sure which construction fits your subfloor, your home, or the room you're renovating, that's exactly what our design-build process is built to sort out before a single board gets ordered.
Visit Our Grayslake Showroom
Contact Lotus Home Improvement to talk through your flooring options.
Lotus Home Improvement 641 Barron Boulevard, Grayslake, IL 60030 (847) 421-0847 info@lotushomeimprovement.com