05 - FACTORY-BUILT FIREPLACES AND CHIMNEYS

Send us Fan MailFactory-built fireplaces have dominated new construction since the 1970s, but they operate under completely different rules than masonry fireplaces. This episode covers prefabricated metal fireplace systems including the cabinet, metal chimney, and refractory panels that must work together as a tested system. Learn why you cannot mix components from different manufacturers and why these systems have a limited 15-30 year service life. We'll discuss fireplace cabinet installation, refractory panel cracking, damper operation, and proper hearth extension construction. Discover clearance requirements for combustible trim and walls, and learn about common accessories like grates, screens, doors, and circulation fans. The metal chimney section covers height requirements, offset limitations, termination methods through chases or roofs, proper flashing installation, and the critical importance of fireblocking at each floor level. We'll also examine shrouds, clearances to combustibles, and the comprehensive list of typical defects inspectors encounter with these systems.KEY TOPICS:• Factory-built vs. masonry fireplace differences• Component compatibility and system testing• Limited service life (15-30 years)• Defective brands to be aware of• Fireplace cabinet installation and inspection• Refractory panel condition assessment• Hearth extension requirements• Clearance requirements for trim and walls• Grates, screens, doors, and fans• Minimum chimney height (15 feet from cabinet)• Chimney offsets and elbow limitations• The 3/2/10 termination rule• Chase and roof penetration details• Metal pan installation and flashing• Fireblocking requirements• Typical defects and inspection pointsIntro This episode is brought to you by GetSync.pro This episode is hosted by Charlie Bellefontaine of Chicagoland Home InspectorsFor complete training with visual materials, practice exams, and certification support, visit nhiexamprep.com© 2025 National Home Inspector Exam Prep Podcast. All rights reserved.