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Non-Com Exterior

Fire can devastate buildings and lives in a matter of minutes. Protecting against the threat and effects of fire is vital.

NON-COM Exterior fire retardant treated timbers for exterior or severe damp situations have a proven track record of reducing the surface spread of flame and the effects of heat and smoke release to provide extra time for escape and damage limitation.

A commercially proven global brand, NON-COM Exterior is backed by extensive independent certification and more than 40 years of fire performance experience.

Timber is impregnated on all faces with no need to re-apply fire retardant protection throughout the life of the timber. Offering 30 year maintenance free service life performance.

NON-COM Exterior is applied in a stringently controlled, industrial vacuum pressure factory process at a specialist treatment centre - the only one of its type in the UK, operating with ISO 9001 and ISO 14001 accreditations.

NON-COM Exterior treated timbers can be used externally without the need for a coating.

Proven durability - non hygroscopic and non efflorescent treatment.

End Use and Specification

Typical end uses for NON-COM Exterior treated material includes exterior cladding and exposed timber structures, cedar shingles and shakes and Yorkshire boarding material.

For more information you can download our useful guides:
Non-Com Exterior Specifiers Guide
FR Treatment Checklist







The only fire retardant impregnation treatment accepted by the National House Building Council (NHBC) Building Control service for exterior timber cladding.

Fully tested by Exova Warrington Fire Research with independent Euroclass Classification Reports for each timber species and timber thickness, for use with or without air gaps - EN 13501-1.

UK Wood Protection Association (WPA) approved status type LR (leach resistant) fire retardant product for the protection of exterior timbers.

Quality accredited through the UK WPA Benchmark FR Certification scheme.

For advice on coating systems to use with NON-COM Exterior treated timbers please contact Arch Timber Protection directly.