17/09/2026
๐ฅ ๐๐ถ๐ฟ๐ฒ-๐ฅ๐ฎ๐๐ฒ๐ฑ ๐๐๐ฐ๐๐๐ผ๐ฟ๐ธ: ๐๐ฟ๐ฒ ๐ช๐ฒ ๐๐ผ๐ป๐๐ถ๐ฑ๐ฒ๐ฟ๐ถ๐ป๐ด ๐๐บ๐ถ๐๐๐ถ๐ผ๐ป๐ ๐ฎ๐ ๐ช๐ฒ๐น๐น ๐ฎ๐ ๐๐ถ๐ฟ๐ฒ ๐ฃ๐ฒ๐ฟ๐ณ๐ผ๐ฟ๐บ๐ฎ๐ป๐ฐ๐ฒ?
When specifying fire-rated ductwork for ๐ฝ๐ต๐ฎ๐ฟ๐บ๐ฎ๐ฐ๐ฒ๐๐๐ถ๐ฐ๐ฎ๐น ๐ฝ๐น๐ฎ๐ป๐๐, ๐ฐ๐น๐ฒ๐ฎ๐ป๐ฟ๐ผ๐ผ๐บ๐, ๐๐ฒ๐บ๐ถ๐ฐ๐ผ๐ป๐ฑ๐๐ฐ๐๐ผ๐ฟ ๐ณ๐ฎ๐ฐ๐ถ๐น๐ถ๐๐ถ๐ฒ๐, ๐น๐ฎ๐ฏ๐ผ๐ฟ๐ฎ๐๐ผ๐ฟ๐ถ๐ฒ๐ ๐ฎ๐ป๐ฑ ๐๐ฒ๐ป๐๐ถ๐๐ถ๐๐ฒ ๐ฑ๐ฎ๐๐ฎ ๐ฐ๐ฒ๐ป๐๐ฟ๐ฒ๐, the first question is usually:
โ๐๐ผ๐ฒ๐ ๐ถ๐ ๐บ๐ฒ๐ฒ๐ ๐๐ต๐ฒ ๐ฟ๐ฒ๐พ๐๐ถ๐ฟ๐ฒ๐ฑ ๐ณ๐ถ๐ฟ๐ฒ ๐ฟ๐ฎ๐๐ถ๐ป๐ด?โ
Fire performance is fundamental. But for critical environments, perhaps we should also ask:
โ๐ช๐ต๐ฎ๐ ๐ถ๐บ๐ฝ๐ฎ๐ฐ๐ ๐ฐ๐ผ๐๐น๐ฑ ๐๐ต๐ฒ ๐ฑ๐๐ฐ๐๐๐ผ๐ฟ๐ธ ๐บ๐ฎ๐๐ฒ๐ฟ๐ถ๐ฎ๐น๐ ๐ต๐ฎ๐๐ฒ ๐ผ๐ป ๐๐ต๐ฒ ๐ฒ๐ป๐๐ถ๐ฟ๐ผ๐ป๐บ๐ฒ๐ป๐ ๐๐ต๐ฒ๐ ๐ฎ๐ฟ๐ฒ ๐ฝ๐ฟ๐ผ๐๐ฒ๐ฐ๐๐ถ๐ป๐ด?โ
Fire-rated ductwork may incorporate coatings, insulation, sealants and other protective materials. Depending on the application, these should also be considered for:
โข Low VOC emissions
โข Outgassing performance
โข Heavy-metal and asbestos content
โข Boron-related emissions
โข Particle shedding
โข Chemical composition
โข Cleanroom compatibility
For example, ๐ช๐ถ๐ป๐๐๐ฐ๐ ๐ณ๐ถ๐ฟ๐ฒ-๐ฟ๐ฎ๐๐ฒ๐ฑ ๐ฑ๐๐ฐ๐๐๐ผ๐ฟ๐ธ ๐ต๐ฎ๐ ๐๐ป๐ฑ๐ฒ๐ฟ๐ด๐ผ๐ป๐ฒ ๐๐ฒ๐๐๐ถ๐ป๐ด ๐ฟ๐ฒ๐น๐ฎ๐๐ถ๐ป๐ด ๐๐ผ ๐น๐ผ๐ ๐ฉ๐ข๐ ๐ฒ๐บ๐ถ๐๐๐ถ๐ผ๐ป๐, ๐ต๐ฒ๐ฎ๐๐-๐บ๐ฒ๐๐ฎ๐น ๐ฐ๐ผ๐ป๐๐ฒ๐ป๐, ๐ฎ๐๐ฏ๐ฒ๐๐๐ผ๐ ๐ฎ๐ป๐ฑ ๐ฏ๐ผ๐ฟ๐ผ๐ป ๐ด๐ฎ๐, with environmental considerations including ๐ฅ๐ฒ๐๐ฝ๐ผ๐ป๐๐ถ๐ฏ๐น๐ฒ ๐๐ฎ๐ฟ๐ฒ ๐๐ฎ๐ฏ๐ฒ๐น ๐ฎ๐ป๐ฑ ๐ฆ๐๐ฅ๐๐ ๐๐ฐ๐ผ ๐๐ฎ๐ฏ๐ฒ๐น requirements.
Not every project requires every test. The key is ensuring that ๐บ๐ฎ๐๐ฒ๐ฟ๐ถ๐ฎ๐น ๐ฟ๐ฒ๐พ๐๐ถ๐ฟ๐ฒ๐บ๐ฒ๐ป๐๐ ๐ฎ๐ป๐ฑ ๐๐ฒ๐๐๐ถ๐ป๐ด ๐ฟ๐ฒ๐ณ๐น๐ฒ๐ฐ๐ ๐๐ต๐ฒ ๐ฟ๐ถ๐๐ธ ๐ฎ๐ป๐ฑ ๐๐ฒ๐ป๐๐ถ๐๐ถ๐๐ถ๐๐ ๐ผ๐ณ ๐๐ต๐ฒ ๐ณ๐ฎ๐ฐ๐ถ๐น๐ถ๐๐.
For consultants, this means looking beyond the fire rating when developing specifications.
For owners, it means considering whether the selected materials are suitable not only for ๐ณ๐ถ๐ฟ๐ฒ ๐๐ฎ๐ณ๐ฒ๐๐, but also for the ๐ฒ๐ป๐๐ถ๐ฟ๐ผ๐ป๐บ๐ฒ๐ป๐, ๐ฝ๐ฟ๐ผ๐ฐ๐ฒ๐๐๐ฒ๐ ๐ฎ๐ป๐ฑ ๐น๐ผ๐ป๐ด-๐๐ฒ๐ฟ๐บ ๐ผ๐ฝ๐ฒ๐ฟ๐ฎ๐๐ถ๐ผ๐ป ๐ผ๐ณ ๐๐ต๐ฒ ๐ณ๐ฎ๐ฐ๐ถ๐น๐ถ๐๐.
๐ฅ ๐๐ถ๐ฟ๐ฒ ๐๐ฎ๐ณ๐ฒ๐๐ ๐ฝ๐ฟ๐ผ๐๐ฒ๐ฐ๐๐ ๐๐ต๐ฒ ๐ฏ๐๐ถ๐น๐ฑ๐ถ๐ป๐ด.
๐งช ๐ ๐ฎ๐๐ฒ๐ฟ๐ถ๐ฎ๐น ๐๐ฒ๐น๐ฒ๐ฐ๐๐ถ๐ผ๐ป ๐ฝ๐ฟ๐ผ๐๐ฒ๐ฐ๐๐ ๐๐ต๐ฒ ๐ผ๐ฝ๐ฒ๐ฟ๐ฎ๐๐ถ๐ผ๐ป.
๐ฑ ๐ฅ๐ฒ๐๐ฝ๐ผ๐ป๐๐ถ๐ฏ๐น๐ฒ ๐๐ฝ๐ฒ๐ฐ๐ถ๐ณ๐ถ๐ฐ๐ฎ๐๐ถ๐ผ๐ป ๐ฐ๐ผ๐ป๐๐ถ๐ฑ๐ฒ๐ฟ๐ ๐ฏ๐ผ๐๐ต.