The best flooring for indoor air quality: what to look for

Flooring covers more surface area than almost anything else in your home, so it is a smart place to start when you are thinking about indoor air quality. The good news is that you do not need a perfect answer. You need a few good questions.

It is rarely just the material

Two floors made of the same material can behave very differently. Emissions can come from the binders in engineered products, the adhesive used to install them and the finish applied on top. That is why it helps to ask about the whole system, not only the surface you see.

Look for third-party certifications

Independent programs test products for chemical emissions. Three you may see on flooring and related products:

• FloorScore for hard-surface flooring products
• GREENGUARD Gold for low chemical emissions across many product types
• CRI Green Label Plus for carpet, cushion and adhesives

A certification does not make a product right for every household, but it gives you something concrete to ask for and compare.

How common options compare

• Solid hardwood: a single natural material. Ask what finish was used and how long it cured.
• Tile and stone: inert surfaces. Ask about the grout, sealer and setting materials.
• Engineered wood, laminate and luxury vinyl plank: made of layers and binders. Look for certifications and ask about composite wood formaldehyde compliance.
• Carpet: can hold dust and allergens. Consider low-pile options, a HEPA-filter vacuum and certified products.
• Cork, natural linoleum and bamboo: popular natural options, and still worth checking for certified adhesives and finishes.

Installation and moisture matter too

Ask your installer for low-emission adhesives and finishes, and plan to ventilate well during and after installation. Flooring over a concrete slab also needs proper moisture control. Ask how moisture will be tested and managed before anything goes down.

Questions to ask before you buy

• Does this product carry a third-party emissions certification, and can I see the documentation?
• What adhesive, underlayment and finish will be used?
• How will the installation area be ventilated, and how long should the floor cure?
• How is moisture handled if the floor is over a slab?

One practical step

Pick the room you use most and ask for certification documentation on the flooring you are considering. That one question tells you a great deal.