What is the correct way to protect partially burned evidence such as documents?

The best method for protecting partially burned evidence, such as documents, involves minimizing further exposure to elements that could lead to additional damage. Closing dampers and openings immediately helps to contain the environment where the evidence is located, reducing airflow. This is critical in preventing further combustion and limiting additional damage from smoke, heat, or contaminants that could compromise the integrity of the evidence.

Additionally, by sealing off the area, you are also protecting the evidence from environmental factors and potential tampering, ensuring that it remains as intact as possible for investigation and analysis. This approach is especially vital in preserving crucial details that may still be discernible despite the damage from the fire.