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HEARTH REQUIREMENTS:
An insulating floor protector (hearth) is required. The minimum requirement for an insulating floor
protector (hearth) is one layer of 6mm thick ‘PROMATECT H’, SUPALUX, or ETERPAN LD (or simi-
lar with a heat transition coefficient of 5 W/m³ K), and a layer of tiles or slate. This will give a thick-
ness of approximately 14mm, and the extension from the face of the glass must be at least 441mm
(or 440mm from fireplace surround) if the floor protector is flush with the surrounding heat sensitive
material. The floor protector must be at least 875mm wide. It is desirable to carry the floor protec-
tor all the way inside the fireplace to ensure that the bottom of the zero clearance box does
not rest below the top surface of the floor protector.
The projection distance for the floor protector can be reduced if the height of the hearth is more than
0mm above combustible materials. Please refer to the following table:
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