On Wed, 30 Jul 2003 22:09:26 +0100, "David"
wrote:

Class "0" is only the classification of the surface flame spread and not
it's fire resistance. The classes run from 0 to 6 with 0 being the best.

For instance a plaster coated brick wall painted with emulsion is class "0"
whereas if it had a thin paper covering it would be class "1".

The fire resistance of a material is classified on it's stability, integrity
and insulation during a fire test. Also important is the method of fixing
of the panel, i.e., a sheet of 25mm asbestos board is useless if fixed with
low melting point screws and with a 10mm gap around it.

Hoipe this has been of some help.

Alex

Alex, It has - thanks! Good point about the fixing method...

Frank