The trace radiation from qualified natural stone is negligible

Shanghai Jiani Material Technology Co., Ltd. is a professional company specializing in the production of stone tiles.

Do stone building materials emit radiation? Reporters checked authoritative data and found that radiation is not unique to stone. Paint, cement, red bricks, ceramics and other construction materials all contain radioactive substances. Qualified stone products only carry trace radiation, equivalent to the radiation level in daily living environments. Its impact on the human body is even weaker than that of desk lamps, and can be completely ignored.

Hu Yunlin, professor-level senior engineer at the National Center for Quality Supervision and Inspection of Building Materials, stated that manufacturers usually conduct radiation tests on raw materials prior to production. Only materials meeting national radiation safety standards are approved for subsequent processing.

Nevertheless, zero-radiation natural stone does not exist. All substances extracted from the earth contain radioactive elements, merely varying in radiation intensity. Radiation released by qualified ceramic tiles poses negligible health risks. Premium tiles from reputable brands are safe for household use, so consumers need not panic over radiation concerns.

Hu Yunlin advised consumers to request official radioactive qualification certificates from merchants when purchasing decorative stone. Priority can be given to eco-friendly products recommended by the China Consumers Association and items certified qualified by national health authorities.

Regarding claims that brightening agents added to certain tiles sharply raise radiation levels, Hu Yunlin responded that such problematic products did appear on the market in the past. However, stricter industrial testing standards and rising costs of brightening additives have nearly eliminated this issue nowadays.

Li Zehui, Engineering Department Manager at Haida Decoration Company, explained that among common natural stones, marble features lower radioactivity than granite. For families with elderly members, children or pregnant women who are sensitive to radiation, marble is the preferable choice, paired with regular indoor ventilation. Radiation levels also differ by stone color: red and green stones have the highest radiation, while white and black varieties register the lowest.

Artificial stone boasts weaker radioactivity compared with natural stone, though consumers should still ask suppliers to provide valid inspection reports. Attention should be paid to excessive formaldehyde and other harmful substances contained in the massive adhesives used in artificial stone production. Besides, artificial stone is inferior to natural stone in stain resistance and surface hardness.

Li Zehui also reminded homeowners to take floor bearing capacity into account. Large-area stone flooring is not recommended for residential renovation. Residents should refer to housing specifications to learn about overall floor load limits. Exterior balconies, in particular, should avoid heavy stone paving to prevent structural deformation and ground settlement.

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