What Happens When Fire Door Mastic Is Applied in the Wrong Place?

A fire-rated sealant can be perfectly genuine and still be used in the wrong location. That is one of the most important distinctions in frame-to-wall fire stopping: the material alone does not define the system. Look at the whole junction The first question is not “Is this fire mastic?” It is “What junction is this material supposed to be treating?” Proudman's diagnostic approach identifies the frame-to-wall opening, support, packers, backing and continuity as separate things that have to be understood together. BWF's installation guidance makes the same basic point by linking the choice of backing, packer, gap width and specified mastic to the particular installation evidence. Wrong place can mean several things Material may be spread over the visible face of the frame instead of into the intended junction. It may be used to hide a void, bridge a gap…