I'm sorry to hear about the fire incident in your house. Given the extent of damage you've described, it's important to take certain steps to ensure safety and proper restoration. Here are some general guidelines, but please keep in mind that it's essential to consult with a professional contractor or restoration expert who can assess the specific situation on-site:
Roof Replacement: If the roof has been significantly damaged by the fire or soot, it's likely that it will need to be replaced to ensure the structural integrity of the house and to prevent any water leakage that might occur during the restoration process.
Rewiring: If the fire has damaged the electrical system, it's essential to rewire the entire house to eliminate any potential hazards and ensure that the electrical system is up to code and safe to use.
Plaster Walls: Whether the plaster walls need to be removed or not depends on the extent of the damage. If the soot has penetrated deeply into the plaster and cleaning isn't possible, then removal might be necessary. However, in some cases, professional cleaning techniques can be employed to restore the walls without removal.
Heated Tiles (Coil): If you have heated tiles with a coil system, they might have been affected by the fire, and the extent of the damage will determine whether they need replacement or repair. In either case, the heating system should be thoroughly inspected by a professional to ensure it's safe to use.
In a situation like this, it is crucial to work with professionals who have experience in fire damage restoration. They can assess the damage more accurately and develop a comprehensive plan for the restoration process. Additionally, consult with your insurance company to understand the coverage you have for fire damage and what steps are necessary for filing a claim.
Please remember that safety should be your top priority. Ensure that the affected areas are secured, and avoid entering any unsafe parts of the house until it has been assessed by professionals.