Choosing Safe Flooring for Schools and Nurseries: Why Indoor Air Quality Matters

When specifying flooring for schools, nurseries, and childcare facilities, the conversation typically centers on durability, maintenance, and cost. Indoor air quality rarely makes the shortlist — despite the fact that children are significantly more vulnerable to airborne chemical exposure than adults, and spend a disproportionate amount of time in direct contact with the floor surface itself.

This article covers why flooring chemistry matters more in children's environments than anywhere else, what certifications provide meaningful assurance, and how hemp flooring is being used in educational settings as a verified non-toxic alternative.

Why Children Are More Vulnerable to VOC Exposure

Volatile organic compounds (VOCs) are chemicals that off-gas from building materials, finishes, adhesives, and furnishings at room temperature. Many flooring products — including vinyl, some engineered hardwoods, and certain bamboo composites — emit VOCs and formaldehyde for months or years after installation.

Children are not simply small adults when it comes to chemical exposure. Several physiological factors make them meaningfully more vulnerable:

• Higher breathing rate: Children breathe more air relative to their body weight than adults — roughly two to three times more per kilogram. This means a higher dose of any airborne compound per unit of body mass.
• Proximity to the floor: Infants and toddlers spend the majority of their time at floor level — crawling, sitting, and playing directly on the surface. VOC concentrations are typically highest close to the floor, where off-gassing materials are located and where air circulation is lowest.
• Developing organ systems: The neurological, respiratory, and endocrine systems are still developing in young children. Exposure to endocrine-disrupting compounds (such as phthalates used in vinyl flooring) and respiratory irritants during critical developmental windows carries greater risk than equivalent exposure in adults.
• Hand-to-mouth behavior: Young children regularly transfer material from floor surfaces to their mouths. This creates a direct ingestion pathway for plasticizers, dust-bound SVOCs, and other compounds that migrate out of flooring materials over time.

The EPA and the American Academy of Pediatrics have both published guidance acknowledging children's heightened sensitivity to indoor environmental pollutants. For facilities serving children, flooring selection is not a minor specification decision.

Certifications That Provide Meaningful Assurance

Not all flooring certifications address the same risks. Here are the three most relevant standards for children's environments:

CARB 2 (California Air Resources Board Phase 2)
CARB 2 sets maximum formaldehyde emission limits for composite wood products, including flooring. It is the most stringent formaldehyde standard in the United States and is enforced by third-party testing. Products that are CARB 2 compliant have been independently verified to meet these limits. CARB 2 compliance is the baseline requirement for any composite wood or engineered flooring specified in a children's facility.

GREENGUARD Gold
GREENGUARD Gold (formerly GREENGUARD Children & Schools) is specifically designed for environments where children spend significant time. It sets stricter chemical emission limits than standard GREENGUARD certification, covering over 360 VOCs and total chemical emissions. Products certified to GREENGUARD Gold have been tested and verified to meet these limits under conditions that simulate real-world indoor environments. It is the most comprehensive VOC certification available for flooring and furnishings.

FloorScore
FloorScore is a certification program developed by the Resilient Floor Covering Institute in partnership with SCS Global Services. It tests hard surface flooring products for VOC emissions against California's Section 01350 standard — one of the most comprehensive indoor air quality standards in the world. FloorScore certification is widely recognized by LEED, CHPS (Collaborative for High Performance Schools), and other green building programs.

When specifying flooring for a school or nursery, look for products that carry at least one of these certifications — and verify that the certification applies to the specific product being installed, not just the manufacturer's broader product line.

HempWood in Educational Settings

HempWood hemp flooring carries zero VOC status and no-added-formaldehyde designation, with CARB 2 compliance verified through third-party testing. It is manufactured using a soy-based adhesive system that eliminates the formaldehyde-containing resins found in many composite wood and bamboo flooring products.

The material has been specified and installed in educational environments, including at the University of Kentucky — where HempWood was selected in part due to its verified indoor air quality profile and its alignment with sustainability commitments. The University of Kentucky installation represents one of the more visible institutional adoptions of hemp-based flooring in the United States to date.

With a Janka hardness rating of 2,200 lbf — harder than red oak (1,290 lbf) and hickory (1,820 lbf) — HempWood is well-suited to the high-traffic demands of educational facilities. Unlike vinyl flooring, it can be sanded and refinished rather than replaced when surface wear occurs, reducing long-term material waste and lifecycle cost.

From a carbon standpoint, hemp is a carbon-negative crop: it sequesters more CO₂ during growth than is emitted during manufacturing. For institutions with sustainability reporting requirements or green building targets, this is a meaningful differentiator.

What to Avoid

Vinyl and luxury vinyl plank (LVP) are among the most commonly specified flooring materials in institutional settings, largely due to their low upfront cost and waterproof properties. However, vinyl flooring is manufactured from PVC — a plastic that requires phthalate plasticizers to achieve the flexibility needed for flooring applications. Phthalates are classified as endocrine disruptors and are of particular concern in environments where young children have direct, prolonged contact with floor surfaces.

Some vinyl products also off-gas VOCs including 4-phenylcyclohexene (4-PCH) and formaldehyde-containing compounds from adhesives and backing materials. For facilities serving children under five — where floor contact is most frequent and developmental vulnerability is highest — vinyl flooring is a difficult specification to justify on health grounds.

Specifying for Children's Environments

A practical checklist for flooring specification in schools and nurseries:

• Require CARB 2 compliance documentation for any composite wood or engineered product
• Prioritize GREENGUARD Gold or FloorScore certification for comprehensive VOC coverage
• Request third-party emissions test results, not just manufacturer claims
• Avoid PVC-based products in rooms where children under five spend significant time on the floor
• Evaluate lifecycle cost including refinishing versus replacement — not just installed cost
• Consider carbon and sustainability credentials for institutions with green building or reporting commitments

For architects and designers specifying HempWood for educational or institutional projects, our certifications page provides documentation for CARB 2 compliance and additional third-party testing. Architecture samples are available for specification review.

The Practical Case

Children's facilities have a straightforward obligation: minimize unnecessary chemical exposure in environments where children spend significant time. Flooring is one of the largest surface areas in any room and one of the primary sources of indoor VOC and SVOC exposure in built environments.

The certifications exist. The testing protocols exist. The alternatives to vinyl exist — including hemp flooring with verified zero-VOC and no-added-formaldehyde status. The specification decision is a matter of prioritization.