The Building Safety Act and the Crucial Role of Intumescent Linings in Escape Routes
20 February 2024
In the ever-evolving landscape of building safety, the need for stringent measures to protect lives and property has become increasingly apparent. The recent Building Safety Act has brought forward a crucial requirement, mandating the use of intumescent linings within escape routes of buildings. This article explores the role of intumescent linings and the impact on fire safety in buildings.
One fundamental aspect discussed during a recent presentation by Crown Paints, was the flammability of both water and solvent-based paints. Contrary to popular belief, water-based paints are not immune to combustion. Various types, including polyurethane, vinyl acetate, and acrylic, utilise water as a solvent, which evaporates as the paint dries. This revelation emphasises the importance of selecting the right type of paint, especially in critical areas like escape routes.
The Building Safety Act underlines the need for flame retardant paint in specific building zones, creating both awareness and potential confusion. Escape routes, defined under Part B of the Building Regulations, demand a higher standard of lining compared to other areas of the building. Compliance with Class B standards becomes paramount in ensuring safety.
The Fire Safety Act of 2021 further amplifies the commitment to building safety. It mandates the performance of a thorough fire risk assessment, recording all identified risks, and ensuring that the assessment is carried out and acted upon by a competent person. This holistic approach acknowledges the critical role of preventive measures in averting potential disasters.
A notable addition to the safety standards is the requirement for new construction to meet Class O equivalence. This implies that materials used in construction, including paints, must adhere to a specific level of fire resistance. This ensures that the structure itself contributes to fire safety, laying the foundation for a more secure environment.
Escape routes, such as corridors and stairwells, demand a meticulous choice of paint that meets the stringent requirements set by the Building Safety Act. The emphasis on fire-resistant qualities in paints during refurbishment projects becomes crucial in aligning with safety standards.
The presentation emphasised the necessity of having tangible evidence to validate the fire resistance of paints. This involves testing certificates that prove the efficacy of the chosen paint in withstanding fire. For on-site applications, a wet film thickness gauge is mandatory to ensure a minimum of 80 micrometres, thus achieving the coveted Class O status. Failure to adhere to this thickness requirement during application compromises the fire safety standards, underlining the importance of competent and conscientious tradespeople.
One of the standout solutions discussed was the use of intumescent coatings, applied in combination with two finishing coats. This combination not only meets the stringent fire safety standards but also ensures longevity. The intumescent coating acts as a safeguard throughout the lifetime of the building, offering sustained protection against fire hazards.
While the regulations for new builds are explicitly outlined in building regulations, refurbishments pose a challenge. The seminar highlighted the ambiguity in refurbishment guidelines, especially regarding the need for flame retardant qualities in paints, underlining the importance of seeking clarity and adhering to the highest safety standards even in renovation projects.
In conclusion, the implementation of intumescent linings within escape routes is a pivotal step toward bolstering building safety. The insights gleaned from the Crown Paints seminar emphasised the complexities and nuances involved in adhering to the Building Safety Act and Fire Safety Act. As the industry moves forward, a collective commitment to understanding and implementing these regulations will be paramount in creating safer environments for all.