This question gets to the heart of concerns about chemicals (like phthalates or VOCs) in vinyl flooring. Modern vinyl flooring is generally considered safe for indoor air quality, especially products from reputable manufacturers that have been tested and certified for low emissions. Here’s a breakdown:

VOC Emissions:
Vinyl flooring, especially in the past, has been associated with volatile organic compounds (VOCs) primarily from the chemicals used in its production (like plasticizers, adhesives in installation, etc.). However, many vinyl flooring products today are made to be low-VOC. Look for flooring that is FloorScore® or GREENGUARD Certified. These certifications mean the product has been tested by a third party and meets strict standards for indoor air emissions (including for chemicals like formaldehyde, which in vinyl is not usually an issue, and other VOCs).

Phthalates:
Phthalates are chemicals historically used as plasticizers in vinyl (to make it flexible). There was concern about phthalates as endocrine disruptors, so many flooring companies have moved away from using certain phthalates. It’s now common to see labels like “phthalate-free” or “no ortho-phthalates” on vinyl flooring. Since around 2015-2016, many major brands have eliminated phthalates of concern from their vinyl flooring. That means the vinyl planks/tiles are made with alternative plasticizers that are considered safer.

Initial Odor:
When you open a box of vinyl planks, you might notice a bit of a “new vinyl smell.” This is similar to the new car smell – not necessarily harmful, and it typically dissipates. It could be the residual of manufacturing or packaging. Good ventilation when installing will help clear that out. Usually, within a few days or weeks, any odor is gone. If an odor persists, that could indicate higher emissions, but that’s uncommon with floors meeting standards.

Formaldehyde:
Unlike laminate which has wood components and adhesives, vinyl isn’t a primary source of formaldehyde typically. Unless there’s some composite wood in an attached pad or something, vinyl floors usually don’t have formaldehyde issues. It’s mainly about VOCs from the vinyl itself or adhesives.

Adhesives:
If you are gluing down vinyl flooring, the glue could be a source of VOCs. Choose a low-VOC adhesive (they exist, and many are required by local building codes now to meet certain VOC limits). If you do a floating click installation, you avoid adhesives altogether, which further reduces any VOC concerns.

Safety and Maintenance:
Once installed, vinyl floors are inert. You just need to maintain them with safe cleaning products (some cleaning chemicals can be VOC sources too, ironically, so use mild, floor-recommended cleaners). Vinyl flooring doesn’t trap allergens like dust or pet dander, so in that sense it can improve indoor environmental quality for allergy sufferers compared to carpet.

So, is it safe?
For the vast majority of homeowners, a vinyl plank floor from a well-known brand, installed properly, poses no known health hazards. If you get a floor that is FloorScore certified (or similar), you can be confident it has low emissions. The industry is aware of past concerns and has taken steps to ensure these floors are as safe as other types. For example, hospitals, daycares, and schools often use vinyl flooring because it is resilient and easily sanitized; they also choose products that meet stringent indoor air quality standards.

If you’re extremely sensitive or want to be extra cautious: unbox the flooring and let it sit in a well-ventilated garage or space for a few days before installing, to off-gas any residual VOCs. But usually acclimating and then installing with open windows is plenty.

Conclusion: Modern vinyl flooring is generally low in VOCs and safe for indoor air quality, especially if you opt for certified low-emission products. It’s a flooring commonly used in homes, including those with children, without issue.