Fireplace Mantle Clearance Validator

Our fireplace mantle clearance calculator helps verify that combustible mantle installations meet fire safety codes. Building codes require specific minimum distances between fireplace openings and combustible materials to prevent fire hazards, and these requirements increase with mantle projection depth.

The calculator follows IRC (International Residential Code) and NFPA 211 guidelines that specify clearance requirements based on mantle depth. A deeper mantle that projects further into the room requires more vertical clearance because it's exposed to more heat from the firebox.

This tool is essential for homeowners installing or replacing fireplace mantles, contractors verifying compliance, and anyone asking "how high does my mantle need to be?" or "is my fireplace mantle safe?" Non-compliant installations can cause fires or fail home inspections.