Why Does a Fire Door Bind at the Bottom When the Floor Looks Fine?

Why Does a Fire Door Bind at the Bottom When the Floor Looks Fine? Related diagnostic: Why Is a Fire Door Rubbing on the Floor? explores the connected fault pattern and helps compare the evidence before choosing a repair. A fire door that drags at the bottom does not automatically have a flooring problem. The actual contact may be between the bottom of the leaf and the floor, a threshold, a drop-down seal, or another part of the closing arrangement. The important first step is to find the exact interface that is producing the resistance before cutting or planing the door. Check whether a drop-down seal is deploying too early A common condition to investigate is a drop-down seal that engages before the door has reached its proper closed position. Watch the bottom of the door while it closes. If…