Do All Fire Doors Require Intumescent Strips?

 

Intumescent strips are installed around the perimeter of the fire door, specifically along the edges of the door frame, where the door meets the frame when closed. They are typically fitted in the frame or in grooves within the door itself. These strips expand when exposed to heat, filling any gaps and helping to prevent smoke and flames from passing through the door’s perimeter. Depending on the door design, the intumescent strip may also be applied to the door itself in some cases to ensure full protection.

 

 

 

A 10mm x 4mm intumescent strip is commonly used for FD30-rated fire doors. FD30 doors are rated to withstand fire for up to 30 minutes, and this size of intumescent strip helps seal the gaps around the door frame when exposed to heat. The strip expands during a fire, closing any gaps and enhancing the fire door’s ability to contain the fire and smoke within the designated area. Always verify the exact requirements for your specific door installation, as there may be slight variations based on the manufacturer’s guidelines or local regulations.

 

 

In general, the type of intumescent strip used may vary depending on the specific requirements of residential or commercial properties, although the core function remains the same. Fire safety standards for commercial buildings are typically stricter than for residential buildings, so the intumescent strips used in commercial settings might need to meet higher performance ratings or different regulatory standards. In residential settings, standard intumescent strips for FD30 or FD60-rated doors may be sufficient. Always ensure the strips meet the applicable fire rating requirements for both residential and commercial applications to comply with building codes and fire safety regulations.