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Between & under joists

Use a combination of Celotex TB3000, Celotex GA3000 and XR3000 high performance thermal insulation in flat roof between and under joist applications to minimise insulation thickness and give the following benefits:

  • A perfect solution to upgrade older buildings 
  • Provides reliable long term energy savings for buildings 
  • No need to remove existing weatherproofing covering 
  • Ventilated cold roof construction 
  • The ideal renovation/conversion solution 
  • Easy to minimise any loss of internal headroom

For full and detailed product and application information, please download the Insulation Between and Under Joist application datasheet.

Products for Between & under joists

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Downloads for: Between & under joists

Built-up flat roofing applications

Use Celotex EL3000 high performance insulation in built-up roofing applications, ... Find out more

Between joists

Use Celotex GA3000 or Celotex XR3000 high performance thermal insulation in flat ... Find out more

Single-ply membrane flat roofing applications

Use Celotex EL3000 high performance insulation in either mechanically fixed or fully ... Find out more

Balconies & terraces

Use Celotex GA3000 or Celotex XR3000 high performance thermal insulation between ... Find out more

Sustainability

Celotex has the lowest carbon footprint of any PIR manufacturer. Read more about our sustainability stance here. Read more

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