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  • Technical Position Paper · BSB-TPP-001

Insulated or non-insulated? Let the fire strategy decide.

Neither technology is automatically better. Each may be the correct engineering answer for a different requirement. This free nine-chapter technical position paper provides a structured, standards-based methodology for specifying E, ES, EI and EIS fire dampers, starting from the building fire strategy, not the product catalogue.

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BSB Dampers | Insulated vs Non-Insulated Fire Dampers
  • The common language

Four classifications. One decision framework.

Classification describes demonstrated performance. Specification determines which demonstrated performance is required. The paper shows you how to keep the two from being confused.

E

Integrity

Translate strategy objectives into defensible, classification-level performance requirements

ES

Integrity + Smoke

Integrity together with demonstrated smoke leakage performance.

EI

Integrity + Insulation

Integrity together with limitation of temperature rise on the non-fire side.

EIS

Integrity + Insulation + Smoke

Integrity, insulation and demonstrated smoke leakage performance.

The paper’s central argument: the same building may legitimately contain E-, ES-, EI- and EIS-classified fire dampers. A consistent fire strategy doesn’t require identical dampers throughout. It requires each damper to satisfy the performance of the compartment boundary it protects.

"The objective is not to maximise specification. The objective is to optimise specification."

— The BSB Declaration · BSB-TPP-001
  • From Chapter 8

The five questions every consultant should ask

If you can’t answer all five, the paper gives you the framework to get there, including a full engineering checklist and the most common specification errors to avoid.

  • What does the fire strategy require?
  • What performance must this compartment boundary achieve?
  • Is smoke leakage performance required?
  • Is insulation performance required?
  • Has the selected fire damper been tested and classified for the proposed installation?
BSB Dampers | Insulated vs Non-Insulated Fire Dampers
  • Who it's for

Written for specification and project teams

Fire engineers

Translate strategy objectives into defensible, classification-level performance requirements

M&E consultants

Specify with confidence and justify why different boundaries carry different classifications.

Contractors & installers

Understand why the tested installation, supporting construction and access matter as much as the product.

Building owners & FMs

See what whole-life inspection, maintenance and replacement demands your specification creates.
  • Get the full position paper in hard copy

Request your personal copy

Tell us where to send it and your personal free copy will be posted to your business address, along with a one-time follow-up from our team in case you’d like to discuss a live project.

  • The complete nine-chapter paper
  • The five-stage performance-based specification methodology
  • The pre-specification engineering checklist
  • The ten principles of performance-based specification
  • Free to share in full with your project team

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