Background: There is a wide range of challenges through the use of nano‑, material in buildings. By developing construction industries the use of flame retardant nano‑, materials is a hurdle for human health. However occupational exposure measurement is not applicable for nano‑, particles monitoring. Risk assessment is an alternative method for industrial hygiene strategies. In this study, we use the Control Banding approach for risk assessment of 3 nano‑, fire retardant (NFR) in the building industry. Methods: We used Control Banding as a risk assessment approach for decision making about nano‑, materials in the building industry. The risk of nano‑, fire retardants such as monokote accelerator, monokote Z‑, 106 G and monokote Z‑, 106 HY in the construction industry was studied. The level of risk was evaluated by the matrix of hazard severity and probability score. Hazard severity was scored by toxicological information. The probability score was estimated by the state work operation. Results: A score of hazard severity in monokot Z‑, 106 HY was higher than other nano‑, materials. The probability score of spraying tasks was lower than mixing and transportation tasks. The results show the application of all nano‑, materials had the higher risk level in transportation and mixing tasks. The risk level of monokote accelerator and monokote Z‑, 106 G in spraying task is lower than monokot Z‑, 106 HY. Conclusions: There is a high risk level for studied nano‑, materials in the coating tasks of the construction industry. In conclusion, powerful Controlling strategies such as the substitution of nano‑, materials was suggested to decrease the risk of nano‑, fire retardants.