Ask any homeowner if they are concerned about a home fire caused by a blocked dryer vent and they will probably say it ranks relatively low on their scale. The thought of it happening, however, should be serious enough to seek the assistance of professionals. At the very least, if you have older parts consider upgrading the vent system, including the transition piece from the dryer to the wall to be more heat-resistant.
Commonly, dryer vent transition pieces are attached to the dryer’s exhaust port for linkage to the vent. The problem is that the transition piece’s construction renders them vulnerable to heat and lint buildup. The International Association of Certified Home Inspectors adds that the small area of many laundry spaces leaves little room for the vent to channel the heat load all the way to the exterior of the home.