FIRE PERFORMANCE CHARACTERISTICS_____________________________
The fire performance of wood can be improved through the use of fire retardant
coatings. The amount of improvement is determined by the effectiveness of the
treatment. Norges branntekniske laboratorium has tested spray applied Firecote X
to the latest European standard EN 13823:2002 – this is also referred to as the
Single Burning Item test.
Firecote X fire retardant wood coatings when properly applied, are effective in
improving fire performance characteristics.
We can now offer you a completely water based fire protection system for internal
or external pine timber, which is:
Ideal for use in schools, hospitals, nursing homes, swimming pools and
public buildings etc.
Firecote X wood coatings have excellent performance characteristics when used
either internally or externally. When using Firecote X as a spray applied material
externally, it may be desirable to overcoat with a sealer if used in areas of very
Treatment with Firecote X coatings will in some cases leave a white slightly shiny
layer bordering the area that has been treated. This layer is ordinary salts that
have crystallized and leached out. The layer may first appear after a certain
period of time, because the salts require time and oxygen for the crystallization
process to take place. If the product surface area is saturated with the coating
then this surface salt formation can occur. Closed pore surfaces create a material
build-up as well, because of the decreased absorbtion rate. When this occurs,
the surface area build up may be removed with a wet sponge or cloth.
STRENGTH AND DETERIORATION___________________________________
Firecote X is non-toxic and does not deteriorate the coated materials or their
Firecote X is low in hydroscopicity and is not vulnerable to absorbing moisture. It
does not cause premature degradation and simultaneous strength loss at
elevated temperatures e.g. greater than 66° C and humidities
The reactive toxicity of the total products of combustion of Firecote X coated
materials is very low.
BURN CHARACTERISTICS OF WOOD (CELLULOSE)_____________________
WOOD COMPOSITION: Wood consists primarily of carbon, hydrogen and
oxygen.. with lesser percentages of nitrogen and other elements, but it contains no sulphur which is often present in other fuels. Cellulose is the major component
BURN CHARACTERISTICS: Wood (cellulose) normally does not burn directly.
The initial reaction to high heat exposure is pyrolysis (chemical decomposition by
heat) in which some of the products given off are gases, vapours or mists, that
can form flammable mixtures with air. On ignition, the combustion of these
products is evidenced by visible flames. The solid residues include charcoal,
which can undergo a different form of combustion, by combining directly with oxygen, as evidenced by glowing. This is an important distinction, since many chemicals that are effective flame inhibitors, have little or no effect in retarding
flameless combustion or after-glow. For most applications flame retardence is
more important , but there are some instances where glow resistance is equally
necessary – Firecote X is the answer.
CHEMICAL BURNING SEQUENCE____________________________________
UNTREATED CELLULOSE: breaks down into liquids and a smaller amount of solids.
The liquids in turn break down into flammable gases and a little char, and the
solids decompose into char and gases, some of which are flammable, and some
not. The flammable gases given off by the liquids, combine with those from the
solids to cause flaming and the emission of additional heat which continues the
TREATED CELLULOSE: with treated Cellulose, fewer liquids and more solids
are formed, and more of the solids become char. The reduced amount of liquids creates some char and some flammable gases Because of the amount of flammable
gases from both the liquid and solid phases is now significantly less
with Cellulose treated with Firecote X there is less heat released. Therefore, flame
retardance or a reduced burning rate is achieved.
Coverage achieved will depend upon the applicators expertise. However, as a
guide expect to cover 5 m2/litre when using low-pressure spray equipment.
Firecote X should be applied in three mist coats.
INDEPENDENT LABORATORY TESTING EN 13823:2002 Single Burning Item
Class: B TayFire (International) Ltd
Tel: +44 (0)1821 641 007
Fax:+44 (0)1821 641 008