How important are smoke seal for fire doors

Usually when purchasing door products, smoke seal is always as an option, for the door that does not have fireproof function, equipped with smoke seal seems to be a redundant thing. Is this really the case? let us learn more about the role of the smoke seal.

A series of UL standards require the use of smoke seals to minimize smoke leakage when doors are used for fire and smoke isolation. And the U.S. building code and fire code (NFPA 105) require doors in evacuation routes and medical facilities, high-rise buildings, etc. are required to be equipped with smoke seals on doors to prevent smoke from spreading through the doorway in case of a fire and to protect evacuation routes. Especially in high-rise buildings or places where a high level of security is required, smoke seals can significantly improve safety.

Firstly, blocking smoke and seal up. Smoke seals are effective in stopping smoke from penetrating through door or window cracks in the event of a fire, thus slowing down the spread of smoke and protecting the air quality inside the building. This is critical to extending evacuation time, as smoke in a fire is often more dangerous than flames.

The second point is flaming isolation: smoke seals can enhance the fire resistance of the door when used in conjunction with a fire door. At high temperatures, the smoke seal expands and fills the door cracks, forming a barrier that stops the fire from spreading.

The third point is sound insulation and noise reduction. Smoke seals also have a certain soundproofing effect, which can reduce the spread of noise through the door cracks and improve the comfort of the indoor environment.

The fourth point is energy saving and heat preservation. Due to its good sealing performance, smoke seals can reduce the air flow in the gaps between doors and windows and reduce the loss of cold and warm air, thus improving the energy utilization efficiency of the building.

The fifth point is to prevent dust and insects: smoke seals can also stop dust and insects from entering the room through the doorway, keeping the room clean and hygienic.

Seals provide not only security but also all of these benefits and are therefore necessary for fire doors. For other doors it can also be installed as an option for similar purposes.

Shanghai Xunzhong Industry Co., Ltd. (XZIC) have a history of more than 15 years in producing and selling fire doors. We understand the fire safety standards of different fire doors and can give professional advice to help customers choose suitable fire doors and keep them maintenance. We product high quality UL fire rated doors, we have wooden fire door certification for 20-90 minutes rated time, and up to 3 hours for steel fire doors. All products are customized. We are welcome to ask any questions and help you to push your projects. Check our website for more information and our products: www.ulfiredoormfg.com

Contact by mail: [email protected]