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Eldfast Ceramic Chimney Flue Relining


ELDFAST is a wholly ceramic material composed of two elements: a refractory ceramic aggregate in
powder form and a resin bonding agent that together create a "slurry" with adhesive properties when
applied under pressure.

Traditionally, only materials containing water, lime / clay mortar or cement have been available to re -
parge a flue internally, these materials are now known to be prone to acid attack and deterioration.

Characteristics / Benefits:
(1) Preserves X - Sectional Area:
Eldfast is an in - situ applied lining, drawn through the flue by means of a "plug", leaving a 4 mm
nominal thickness of material on the flue face (see method of installation for further details)


Masonry flue (for example)

Eldfast coating (nominal thickness 4mm)

Free Gas Area

Traditional cast in - situ coating and stainless steel  flues.

As demonstrated above, Eldfast will follow the contours of the flue (although some rounding of corners is
likely), rather than drastically reduce the free area, this is of particular benefit when wishing to retain
future usefulness of the fireplace for open fires (requiring a minimum 8 inch / 200mm cross sectional
area) or when dealing with smaller flue areas initially.

Eldfast has been designed to cause little disturbance to decor and can increase up draught of chimney flues.

Due to the ceramic nature of the Eldfast, your chimney will gain certain advantageous properties following lining with the material:
As the refectory aggregate does not easily let heat permeate though, it acts as an insulator, keeping the temperature of the gasses passing through at a higher level and therefore reducing the likelihood of condensates within (try to imagine space shuttle tiles inside your chimney!!).


This may also have some useful applications for thatch property owners, where the temperature at the point of intersection for flue and thatch can be considerably lowered from that achieved through only the brickwork.
Also as the material fills over jointing and missing purging within the flue providing a gastight surface,
this surface will then dramatically improve up draught as a consequence of its smoother gas passage.


Temperature Impervious

Again, a benefit derives from the ceramic nature of the material (and one that is particularly relevant to
solid fuel users). The results achieved under practical test conditions demonstrated that the product
showed no signs of deterioration at temperatures approaching 2000 degrees centigrade - indeed, it would vitrify and effectively become stronger / harder. Put into context, a chimney fire may generate 1100
degrees centigrade, your flue lining is guaranteed to withstand it.