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Fire Door Upgrades: Retrofitting with Fire Door Mastic



When it comes to ensuring the safety of a building's occupants, fire protection measures are of paramount importance. Fire doors play a crucial role in compartmentalizing fires and preventing their spread. However, over time, wear and tear can compromise the fire-resistance capabilities of these doors. This is where fire door upgrades, such as retrofitting with fire door mastic, come into play. In this blog post, we'll delve into the significance of fire doors, explore the benefits of using fire door mastic for upgrades, and discuss the retrofitting process.


Fire doors are specially designed doors that are engineered to withstand fire and prevent its rapid spread. They are integral components of passive fire protection systems within buildings. Fire doors are strategically placed in areas where fire containment is critical, such as stairwells, corridors, and entrances. Their purpose is to compartmentalize fires, limit the spread of smoke and heat, and provide occupants with safe evacuation routes.


However, the effectiveness of fire doors can be compromised over time due to factors like age, environmental conditions, and improper maintenance. This is why periodic fire door inspections and upgrades are essential to ensure their continued functionality.


Fire door mastic, often referred to as intumescent sealant or fire door sealant, is a specialized material designed to enhance the fire-resistant properties of doors. It works by expanding when exposed to high temperatures, creating an insulating barrier that helps prevent the passage of smoke, flames, and heat. Fire door mastic is commonly used to seal gaps and joints around fire doors, ensuring that they maintain their fire-resistance rating. Not all mastics have the same testing, and some mastics have never seen a fire door burn test. Certitek is tested to the very latest standards including:


BS EN 1366-4:2021

BS EN 476 parts 20:1987 and 22:1987

BS EN 1634-1:2014 + A1 2018

BS EN ISO 140-3:1995 Acoustic Tested

BS EN 1634-3:2004 Smoke Testing


Certitek is also used in testing centres in the UK for weekly burn tests so you can rest assured that this mastic has been rigorously tested.


Benefits of Retrofitting with Fire Door Mastic


Enhanced Fire Protection: Fire door mastic significantly improves the fire-resistance capabilities of doors. By sealing gaps and joints, it prevents the spread of flames, smoke, and heat, buying occupants more time to evacuate and firefighters more time to respond.


Code Compliance: Many building codes and regulations mandate that fire doors meet certain fire-resistance standards. Retrofitting with fire door mastic can help bring existing doors up to compliance with these standards.


Cost-Effective Solution: Retrofitting fire doors with mastic is generally more cost-effective than replacing entire doors. It allows for targeted upgrades that address specific areas of concern without a complete overhaul.


Minimal Disruption: Retrofitting with fire door mastic is a relatively non-invasive process. It can often be done without removing the door itself, minimizing disruptions to building occupants.


Improved Energy Efficiency: In addition to fire protection, fire door mastic can also contribute to better energy efficiency by sealing gaps that might allow drafts to enter or escape, thus enhancing the overall insulation of the building.


The Retrofitting Process


Assessment: A thorough inspection of the fire door is conducted to identify gaps, joints, and areas that require sealing.


Preparation: The door and surrounding areas are cleaned and prepared for the application of fire door mastic.


Application: Fire door mastic is carefully applied to the identified gaps and joints. It is important to follow manufacturer guidelines for proper application.


Drying and Testing: The mastic is allowed to dry, and the door's functionality is tested to ensure that it still opens and closes smoothly.


Final Inspection: A final inspection is conducted to ensure that all gaps have been properly sealed and that the door's fire-resistance has been effectively enhanced.


In conclusion, fire door upgrades are crucial to maintaining a building's fire safety measures, and retrofitting with fire door mastic offers a practical and effective solution. By enhancing fire-resistant properties, improving energy efficiency, and ensuring code compliance, fire door mastic contributes to the overall safety and functionality of a structure. Regular inspections and upgrades, coupled with the use of specialized materials like fire door mastic, play a pivotal role in protecting lives and property from the devastating effects of fire.


Many fire door inspectors and retrofitting companies choose Certitek DM-01 because of its thorough testing to the latest standards, which gives peace of mind to both installers and clients.


Call us on 01355 575971 or email team@certitek.io to find out how you can build Certitek's proven compliance into your projects.



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