16
With installations in Timber Frame Houses, because the fire is to be Installed into a Building Constructed of mainly
Combustible Materials, emphasis must be made of the need to ensure that adequate Fire Protection is provided with
Minimum Safe Distances from any Combustible material.
The construction and depth of the wall, needs to be considered first to see what is required to accommodate the flue of the fire.
The flue caters for wall thickness of up to 500mm thick. With a New Property then the correct provisions for any combustible materials can
be catered for.
With an existing Property you
cannot
simply cut a hole in the wall for the flue as it is essential that different types of Wall Construction take
account of the materials that have been used and their relative positions to ensure there is no Fire Hazzard.
It is important that you read this Section taking account of the Installation Requirements for any Combustible Material Clearances.
Nu-Flame may not have every solution for every Timber Frame Installation but we are certainly available for consultation.
13.1 - FIREPLACE WITH GENERAL REQUIREMENTS FOR FIRE SURROUND WITH FALSE CHIMNEY BREAST
a.
Before starting any Installation you
MUST
seek the advise of your Local Building Control Authority, and Builder and or Architect.
b.
Reference
MUST
also be made to British Gas, publication documents DM2 & DM3, ’Guide for Installation in Timber Frame
Housing’ and the Institute of Gas Engineers Document 1GE/UP/7.
c.
You are advised that if the property is covered by an NHBC Warranty then they should be consulted for advice about the pro posed
Installation.
d.
Installation
MUST
take account of the Outer Wall Cladding be it Brick or Weather Boards, the latter being combustible will require
different Installation Requirements. We recommend seeking advise of the Weather Board Manufacturer and discussing the
recommendations of the Documents in ‘
b’
above before proceeding
e.
The integrity of the VCL (Vapour Control Layer)
MUST
be maintained following the Installation.
f.
When considering the position for the fireplace enclosure the Structural Integrity of the Property
must
not be affected by the
Installation.
g.
Prior to planning the position for the fire take account of the positions of studwork, plumbing and electrical wiring. Studs are
structural parts of the building they should be used to support a fireplace enclosure with noggings provided minimum distances are
maintained but they
MUST
not be cut or modified without consultation with the Builder, Property Designer, Architect or Structural
Engineer.
h.
Choose a position ideally between supporting studding taking into account the positional requirements of the Flue Terminal as
detailed on Page 4.
i.
The Flue will have to pass through the wall and
MUST
be enclosed in a Metal Duct providing a 50mm air gap around the flue.
k.
The VCL (Vapour Control Layer)
MUST
be resealed and a Drip/Weather Shield
MUST
be provided above the Metal Duct to prevent
rain/damp bridging the cavity.
l.
The Fireplace Opening should have provision for a gas supply through the rear, see Section 10 Gas Supply, reference should
be made to the documents mentioned in
‘b’
of this Section for details on how best to provide a gas supply within a Timber Framed
Property.
13. - TIMBER FRAME INSTALLATION OPTIONS WITH REQUIREMENTS FOR FIRE SURROUNDS
Timber Frame Fireplace Enclosure Typical Wall Construction With Fire Surround