Fire retardant coatings for walls are designed to slow down or prevent the spread of flames and smoke in the event of a fire. Here's a breakdown of what you should know:   Types of Fire Retardant Coatings: Intumescent Coatings: These coatings swell up and form an insulating char when exposed to heat. This char acts as a barrier, protecting the wall surface and slowing down the fire's progress. Cementitious Coatings: These are thick, cement-based coatings that provide a protective layer to the wall. They are commonly used in industrial settings and can offer high fire resistance ratings. Ablative Coatings: These coatings absorb heat and then gradually break down, dissipating the heat and preventing it from reaching the wall surface.