Instructions for installation and use. Reproduction prohibited. 07/ 2010 version 2.0 TAM
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2.3 – Fireplace surround
2.3.1 General points
All combustible materials must be removed from the fireplace
surround.
2.3.2 Flooring
The floor must have adequate weight-bearing capacity at the spot
selected for the fireplace. It must be flat and incombustible. If this is
not the case – as with parquet, for instance – it must be removed and
a footing created – of concrete, for example. The footing surface area
must be at least equal to the floor space taken up by the fireplace.
2.3.3 Surround walls
Surround walls must contain no combustible materials and be
resistant enough to bear any anchorage points necessary to the
element.
If they are not, the surround walls must be reconstituted using an
incombustible or A2-s1, d0 (M0) material.
2.3.3.1 Incombustible surrounds
Surrounds must be protected using material with a minimum thermal
resistance of 0.7 m
2
.K/W at 50°C (or of 0.4 m
2
.K/W at 200°C) classed
as A1 or at least M0 or A2-s1, d0 (equivalent to 30 mm of fibrous
insulator of a density less than 100 kg/m
3
with aluminium foil or self-
supporting high-temperature structural insulators made of calcium
silicate).
2.3.3.2 Combustible surrounds
If the surround is composed of combustible materials or materials suffering
degradation under the action of heat and such materials are not removed, a
new incombustible compartment must be interposed, protected in ways
comparable to those mentioned in paragraph 2.3.3.1 above.
2.3.4 The ceiling
All combustible materials (wainscoting, for example) must be removed and
replaced by an incombustible product (such as cellular concrete or
roughcast bricks).
Thermal insulation
thermique
Ventilated air space
Thermal insulation
thermique
Protection of an incombustible surround using a thermal isolation with a
classification A1 or at least A2-s1 d0.
