Armaflex® Rail SD & SD-C

Armaflex® Rail SD & SD-C sponge is the world’s first flexible closed cell insulation to meet EN45545-2 fire protection requirements. It is the leading and most innovative closed cell thermal insulation available to the railway industry worldwide and comes complete with a built-in vapour barrier reducing the risk of corrosion under insulation (CUI). Armaflex® Rail SD & SD-C has been developed to produce extremely low smoke density and reduce the risk of mold and mildew contributing to an improved indoor air quality.


Armaflex® Rail sponge comes in two grades; either standard SD or SD-C which is the standard SD material but with a silver metallic look coating.

Armaflex® Rail SD:

Armaflex® Rail SD-C:

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