In addition to the limitations of the manufacturers’ listings for fire, there are several other things to consider with regard to cladding or plant-ons: There is a separate section in our listings related to cladding of frames. Remember, this is just one example for one manufacturer and one listing lab, and it addresses Steelcraft fire doors listed by UL only. Trim, molding, and plant-ons may not be applied to glass. Attachment of trim, molding, or plant-ons may be done in the field or in the distributor’s shop. Attachments of trim, molding, or plant-ons shall not affect the intended use and function of the opening. Attachment of trim, molding, or plant-ons shall not prohibit the installation of hardware per the requirements of the hardware manufacturer’s template. The only approved attachment method is to use the double-faced tape specified. Trim, molding, and plant-ons may not be attached to the door with mechanical means. Trim and molding may have a minimum thickness of 1/8″ and a maximum thickness of 1-1/4″. Wood veneer may not be applied to Steelcraft fire doors. Trim, molding, and plant-ons do not include wood veneer. Plant-ons made of wood, metal or other non-combustible material may be applied to one or both faces of doors with a maximum hourly fire rating of three hours. Wood trim or molding of any wood species may be installed on one or both faces of Steelcraft fire doors with a maximum hourly rating of three hours. The listing info may also change over time, so it’s crucial to check the specific manufacturer’s listings to find out what is acceptable.Įxample: Application of Wood Trim, and Plant-Ons The Intertek listing requirements for Steelcraft may differ, and other manufacturers may have varying limitations.
I stress…this is one example – it is the the UL listing information for Steelcraft fire doors. For those details, we need to refer to the listings of the fire door and/or frame manufacturer. NFPA 80 does not include any limitations on the size or thickness of cladding/plant-ons, or the acceptable materials or methods of attachment. The use of plant-ons should not prohibit the installation of small signs indicating the function, use, or location of doors. Plant-ons can be attached per the manufacturer’s listing instructions. Plant-ons are attached to the door by a variety of methods such as adhesives, screws, nails, or other mechanical means that might penetrate the door face to achieve holding strength. Plant-ons project from the face surface of the door and are made of different materials, including wood, metals, and plastics. Plant-ons can be of various designs of flat material or can have a contoured shape, such as molding. Plant-ons are usually decorative in nature and are used to impart a specific design or style. This section covers “plant-ons” and protective plates. NFPA 80 – Standard for Fire Doors and Other Opening Protectives, briefly addresses materials applied to fire doors in Annex E – Surface Attachments to Swinging Door Faces. The short answer is a qualified “yes.” Here’s the longer answer… Hence, today’s Quick Question: Can cladding materials be applied to a fire door assembly?
I can’t begin to count the number of times I have been asked to specify hardware for a project where something was applied to the face of the door and/or frame…wood, stainless steel – even stone ( here’s a stone-clad door in Tel Aviv)! I often had to be the bad guy, when the proposed application wouldn’t function correctly or wasn’t code-compliant – especially when the opening was a fire door assembly.
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