Can you fit fire-rated glazing in a listed or heritage building?

Yes, but it needs early discussion with the conservation officer as well as building control. Options include upgrading existing frames with fire glass and seals where an assessment supports it, discreet secondary fire-rated screens, or timber and slim steel systems chosen to suit the building's character.

Upgrade before replace

Where existing timber screens or doors can be assessed, new fire glass and intumescent seals may preserve the original joinery.

Consents

Works to listed buildings normally need listed building consent as well as building regulations approval. Plan for both.

Alternative approaches

A fire engineer may be able to propose a compensating strategy, such as detection or suppression, that reduces the glazing upgrades needed.

Updated 09/10/2026. General guidance only; your fire strategy, designer and building control body decide what applies to a specific building.