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CLEARANCES SPECIFICATION
Non-Combustible Materials Specification
Material which will not ignite and burn. Such materials are those consisting entirely of steel, iron, brick, tile, concrete, slate,
glass or plasters, or any combination thereof. Materials that are reported as passing ASTM E 136, Standard Test Method for
Behavior of Materials in a Vertical Tube Furnace at 750 ºC shall be considered non-combustible materials. Non-combustible
cement board approve must be at least
1/2” (13 mm) thick.
Non-combustible material may be installed on the fireplace frame to cover the metal part as detailed in the installation
examples and clarifications only if there is no weight transfer to the fireplace. Facing and/or finishing materials must never
overhang into the glass opening.
DO NOT
connect materials to or drill into the metal fireplace frame. This can result in excessive heat transfer and/or damage to
the fireplace and surrounding materials.
All joints between the finished wall sheathing and the appliance must be sealed with non-combustible materials.
WARNING
! Risk of Fire! DO NOT apply combustible materials beyond the minimum clearances. Comply with all minimum
clearances to combustibles as specified in this manual.
Examples of noncombustible materials to be used:
•
Skamol Skamotec
•
Pr
omat PROMAFOUR System 1/2”/12 mm, 5/8”/15 mm, 3/4”/18 mm
•
James Hardie - Hardieb
acker® 1/2” Cement Board
•
5/8” Type X fire rated drywall.
Type X gypsum board must comply with ASTM C1396 specification. Type X fire rated
gypsum board can be used around the fireplace or at the back as a non-combustible material.
Combustible Materials Specification
Materials made of or surfaced with wood, compressed paper, plant fibers, plastics, or other material that can ignite and burn,
whether flame-proofed or not, or plastered or un-plastered shall be considered combustible materials.
