The burning of building finishing materials containing chemical substances can lead to the spread of fire with a large number of harmful substances. To prevent this, cellulose, an eco-friendly material that minimizes the generation of harmful substances, was chosen as the main material for building finishing materials. Wastepaper was recycled to extract cellulose, and a finishing material was manufactured by mixing in expandable graphite and magnesium hydroxide. The flame-retardant performance of the finishing material was evaluated by measuring the total heat emission rate using the ISO 5660-1 cone calorimeter, with the particle size of the expanded graphite as a variable. The measured physical properties value was used as the FDS parameter to evaluate the risk of fire. Results show that the cellulose-based building finishing material meets the life safety standard of NFSC 203 during the simulation time and has a FED value that does not exceed 0.001 at maximum. This confirms its effectiveness in providing safe egress time for residents.

Buildings in modern society tend to gradually expand in size due to technological development and overcrowding, which increases the risk of fire. Therefore, continuous efforts are being made to ensure the evacuation safety of occupants by installing firefighting facilities and using flame retardant building finishing materials. This study aims to present a fire performance evaluation plan for building finishing materials using simulations and identify risks that arise from not using flame retardant building finishing materials in medical facilities with vulnerable occupants. A control group for fire performance evaluation was selected using polyurethane foam, while two types of cellulose-based building finishing materials with different flame retardants were chosen for analysis. The cellulose-based finishing materials included expanded graphite, magnesium hydroxide, montmorillonite, and ammonium polyphosphate. Fire performance was evaluated using FDS and path detector simulations based on NES 713 and ISO 5660-1. The results of the study showed that there was a difference of three people in the prediction of the number of deaths depending on the scope of analysis, and it was confirmed that the toxic gas detected was different depending on the added flame retardant. Additionally, construction finishing materials with flame retardant performance increased ASET by at least 130 s compared to polyurethane foam, and the evacuation safety exceeded 1, confirming the effectiveness of securing evacuation stability for occupants.