Does a Container House Contain Formaldehyde?

Container houses may contain formaldehyde, but the specific content is closely related to the age and material quality of the house.

High Formaldehyde Risk in New Container Houses

During the production process of new container houses, materials such as glue and wall panels are used to ensure structural strength and durability. Some low-cost products may use formaldehyde-containing urea-formaldehyde resin glue or phenolic resin glue as adhesives to reduce costs. These adhesives slowly release formaldehyde at room temperature. At the same time, if the surface coating of the wall panels is waterproof and moisture-proof material, or if formaldehyde-containing ink is used for printing, the risk of formaldehyde release also increases. For example, newly produced container houses that use inferior glue and wall panels may have a strong pungent odor after installation, and the probability of formaldehyde exceeding the standard is relatively high.

Low Formaldehyde Risk in Old Container Houses

Old container houses, after long-term use, exposure to sunlight, and ventilation, the formaldehyde in the internal materials gradually volatilizes. If the house has undergone multiple project turnovers, the formaldehyde content has usually been significantly reduced, and there is basically no odor. For example, old container houses that have been used for more than 3-5 years, if properly maintained, have a significantly lower risk of formaldehyde exceeding the standard compared to new houses.

Formaldehyde Content Affected by Suppliers

Container houses produced by large manufacturers have higher requirements in terms of craftsmanship and technology and use relatively high-quality materials. For example, using environmentally friendly adhesives and low-formaldehyde wall panels can effectively reduce formaldehyde release. On the other hand, small manufacturers or low-cost products may have an increased risk of formaldehyde exceeding the standard due to poor material quality. Therefore, when purchasing, it is necessary to pay attention to the supplier's qualifications and product test reports.

Measures to Reduce Formaldehyde Risk

• Ventilation Treatment: After the installation of a new container house, it is necessary to open the windows for a long time to promote formaldehyde volatilization.
• Auxiliary Deodorization: Placing potted plants such as ivy and cactus, or using charcoal bags and deodorizing cleaners, can adsorb some formaldehyde.
• Salt Water Deodorization: Placing buckets of salt water in the house can reduce the concentration of volatile organic compounds such as paint odor.
• Professional Testing: If there are doubts about the formaldehyde content, a third-party organization can be commissioned to conduct testing to ensure compliance with indoor air quality standards (the one-hour average formaldehyde concentration should not exceed 0.08mg/m³).