GREENGUARD Gold Low VOC Emission Certification

Core Strengths

• Gold as the highest tier: Gold is the stricter level of the programme, with emission limits far below ordinary interior material requirements, suitable for sensitive environments without qualification.
• Broad indicator coverage: testing covers total volatile organic compounds, formaldehyde and aldehydes, all measured as emission rates in chamber testing.
• Suitable for sensitive spaces: results allow direct use in schools, healthcare facilities and other settings with demanding indoor air quality requirements, with no dilution or waiting period.
• Issued independently: awarded and monitored by UL Environment, with test data designers can write into specifications and owners can verify.

Key Figures

Service Process

1. Material selection: low-VOC water-based sealers and resins chosen to reduce emissions at source.
2. Sample submission: samples prepared to programme requirements and sent to the designated laboratory for chamber testing.
3. Emission measurement: TVOC, formaldehyde and aldehyde release measured against limits.
4. Review and award: UL Environment reviews the data and issues Gold certification.
5. Ongoing surveillance: formulation changes require re-verification so production matches the certified sample.

Applications

• Interior floors and walls in schools, kindergartens and education facilities
• Public areas of hospitals, clinics and care institutions
• Hotel guest rooms and extended-stay apartments
• Offices and commercial spaces with indoor air quality commitments

Sustainability & Certification

Replacing solvent-based formulations with water-based systems is the precondition for Gold, cutting volatile organic compounds at source and forming part of the same environmental performance as the 30% annual carbon reduction target.

Low-emission materials shorten the flush-out and vacancy period after completion, reducing energy wasted before a building is occupied; combined with 95% water recycling and over 85% waste utilisation, performance spans production through use.

Deep Selection Guide

Environmental performance of interior stone cannot rest on the word natural — sealers and resin are the emission source. When requesting certification, confirm whether it covers the finished product or only the raw material, and whether the tier is Gold. Write the GREENGUARD Gold requirement directly into the material specification and ask for the certificate number with the list of covered products. Confirm that sealing and resin treatment are included in delivery, so solvent-based products applied on site do not cancel the benefit. For school and healthcare projects, check slip class and radionuclide test reports at the same time.

• Selection criteria：Taking Interior floors and walls in schools, kindergartens and education facilities as the starting point, settle the stone type and thickness first, then check texture and colour against Gold as the highest tier.
• Specification & thickness：Dimension and thickness follow Compliance tier (Gold), with notes added for the particular conditions of Public areas of hospitals, clinics and care institutions to avoid improvised cutting on site.
• Acceptance & records：Verify Broad indicator coverage item by item and keep the record, accepting on site by number; the batch code traces back to data from both production and testing.
• Sustainability：Replacing solvent-based formulations with water-based systems is the precondition for Gold, cutting volatile organic compounds at source and forming part of the same environmental performance as the 30% annual carbon reduction target. Add it to the acceptance documents and tie it to the green building rating requirements in force locally.

For GREENGUARD Gold Low VOC Emission Certification, Hengsheng offers a traceable chain from quarry-direct sourcing and smart manufacturing through global delivery and on-site installation, with every step verifiable.

FAQ

How does GREENGUARD Gold differ from standard GREENGUARD?

Gold is the stricter tier, with emission limits significantly below the standard level and developed for sensitive environments such as schools and healthcare. Products certified to Gold can be used in those settings directly, with no additional flush-out period to consider.

Stone is natural — why is low-emission certification needed?

The stone itself releases very little, but sealers, resin and adhesives may contain volatile organic compounds. GREENGUARD Gold measures total emissions from the finished product in its actual condition of use, so it reflects real indoor air quality performance more faithfully.