The short version
- Since mid-2018, composite wood flooring sold in the US must meet federal formaldehyde limits, the old California CARB2 rule gone national. New certified product is a different world from 2015.
- Major retailers pushed ortho-phthalates out of new vinyl flooring back in 2015. New name-brand vinyl plank is largely past that problem.
- The trap is old stock: secondhand, clearance, salvage, and no-name imports skip all of it.
- Tile, polished concrete, and solid hardwood are the inert options. On hardwood, check the finish.
The blowup that fixed the rules
In March 2015, 60 Minutes bought Chinese-made laminate flooring from Lumber Liquidators and had it lab tested. The boxes were labeled compliant with CARB Phase 2, California's formaldehyde emissions standard and then the strictest in the country. The tests said otherwise: emissions averaging around six times the California limit, with some samples near twenty times. Class actions were filed within days of the broadcast, and the company eventually agreed to a $36 million settlement, $22 million in cash and $14 million in vouchers, covering roughly 760,000 customers who'd bought the flooring between 2009 and 2015. The brand limped on as LL Flooring.
The useful legacy was legal. California's limits went national under TSCA Title VI: since June 1, 2018, composite wood products, meaning the particleboard, MDF, and plywood cores under laminate and engineered wood, must be certified to federal formaldehyde limits to be made or imported in the US, and since March 2019 they carry TSCA Title VI compliant labeling. That label on the box is the single most useful thing to check on any flooring with a wood-composite core.
Vinyl's phthalate exit
Vinyl plank had a different problem chemical: ortho-phthalates, the plasticizers that keep PVC flexible and that have been linked in a large research literature to hormone disruption. In 2015 the Ecology Center tested 65 vinyl floor tiles and found phthalates in 58% of them. That same year, Home Depot, Lowe's, Lumber Liquidators, and Menards all committed to phasing ortho-phthalates out of the new virgin vinyl flooring they sell, most by the end of 2015.
So when a new box of name-brand vinyl plank says "phthalate-free", it's describing something real and now standard rather than a premium feature. The honest caveats: those commitments covered new product at major retailers, not everything with a barcode, and vinyl is still plastic. Phthalate-free doesn't make it inert, it makes it a much better version of what it is.
Why the floor deserves the label reading
A floor is often the largest single surface in a room, and it can add up to hundreds of square feet of material emitting into your air for years. You're on it all day. Small kids are on it hands, knees, and face, and floor dust is a documented route by which semi-volatile chemicals like phthalates actually reach people. A scented candle burns for an hour. The floor is there for a decade. That's the math that makes five minutes with the spec sheet worth it.
The used-flooring trap
Everything above describes new product entering the market. None of it reaches backward.
Laminate made before roughly 2016 was never subject to a federal formaldehyde ceiling, and the Lumber Liquidators episode showed how much the old labels could be worth. Older vinyl is far more likely to carry legacy phthalates. And the modern gray market recreates the old problem: marketplace listings, salvage lots, deep-clearance stock of unknown age, and no-name direct imports can skip certification entirely.
A screaming deal on flooring of unknown age and origin is a place to be genuinely picky, especially for a nursery or playroom. Two questions settle it: when was this made, and what standard is it certified to? A legitimate seller can answer both from the box or the spec sheet in about a minute. If the answer is a shrug, the shrug is the information.
Labels worth five minutes, and the inert list
On new product, look for two things. TSCA Title VI compliant, on anything with a composite wood core. And an emissions certification: FloorScore, the hard-flooring standard tested against California's low-emission criteria, or GREENGUARD Gold, which does the same job in a chamber. None of these grade durability or make a product "natural"; they're emissions checks, which is exactly what you want from 600 square feet of material.
Why formaldehyde shows up here at all: composite cores are wood particles held together with resin, and the cheap workhorse resins are formaldehyde-based, releasing small amounts as they age. That's also why the regulations recognize two stricter tiers worth knowing, NAF (no added formaldehyde) and ULEF (ultra-low-emitting formaldehyde), which describe the resin itself. You'll see them on spec sheets from the more careful manufacturers, and either one is a stronger claim than the baseline label.
Installation choices move the needle too. Click-lock floating floors skip adhesive entirely, which removes a whole category of emissions from the project, while glue-down installs put a layer of adhesive under every plank, so its label matters as much as the flooring's. Whatever goes in, treat the first few days after installation like paint week: windows open, air moving, and the new-floor smell fading on schedule rather than sealed into a closed house.
If you'd rather skip the reading, buy flooring with nothing to emit. Ceramic and porcelain tile and polished concrete are fired or mineral through and through. Solid hardwood is essentially inert too, with one asterisk: the finish. A site-finished floor sealed in oil-based polyurethane will off-gas noticeably for days, while factory-finished boards or a waterborne low-VOC finish sidestep most of that.
One naming trap on the way out: real linoleum is not vinyl. It's a much older material made from linseed oil, cork dust, and wood flour on a jute backing, and it earns a spot near the inert list, while "linoleum" used loosely as a word for any sheet flooring usually means vinyl. If a seller can't tell you which one they mean, the price will.
Bottom line
New, labeled flooring from a major retailer, TSCA Title VI plus FloorScore or GREENGUARD Gold, is fine, vinyl plank included. Save your suspicion for secondhand, clearance, and no-name imported stock, and default to tile, concrete, or solid hardwood in rooms where a baby spends floor time.