10 fireplace insert installation, Hearth requirements, Masonry fireplace requirements – Avalon Firestyles Small Flush Hybrid-Fyre User Manual
Page 10

10 Fireplace
Insert
Installation
(for qualified installers only)
© Travis Industries
100-01342
4150521
Hearth Requirements
When installing into a masonry fireplace, the hearth must meet Uniform Building Code (UBC) standards.
USA
When installing into a zero-clearance fireplace, the hearth must extend 16” (407mm) to the front and 8”
(204mm) to the sides of the insert. The hearth must provide an R-value (thermal resistance) of 1.19 or
greater.
If the insert is a minimum 2” (51mm) above the combustible floor (carpet, wood, etc.) the hearth must
extend 16” (407mm) in front and 8” (204mm) on both sides of the insert. Hearth must be non-combustible
(cement board, tile, etc.). No R-value (thermal resistance) is required.
CANADA
When installing into a zero-clearance fireplace, the hearth must extend 18” (458mm) to the front and 8”
(204mm) to the sides of the insert. The hearth must provide an R-value (thermal resistance) of 1.19 or
greater.
If the insert is a minimum 2” (51mm) above the combustible floor (carpet, wood, etc.) the hearth must
extend 18” (458mm) in front and 8” (204mm) on both sides of the insert. Hearth must be non-combustible
(cement board, tile, etc.). No R-value (thermal resistance) is required.
Masonry Fireplace Requirements
Must utilize a positive connection (full reline)
Entire fireplace, including chimney, must be clean and undamaged. Any damage must be repaired
prior to installation of the insert.
Chimney height: 15' (4.5M) minimum; 33' (10M) maximum (measured from base of insert).
Entire fireplace, including chimney, must meet local building requirements.
The fireplace insert must be placed on a masonry hearth built to UBC standards.
Non-Combustible Hearth
(min. R-Value 1.19)
Combustible
Flooring
Non-Combustible Spark Protection
(Tile, Cement Board, Steel, etc.)
USA Min. 16" (407mm)
Canada Min. 18" (458mm)
Combustible
Flooring
Min. 2"
(51mm)
USA Min. 16" (407mm)
Canada Min. 18" (458mm)