The association for the manufacturers of architectural cladding and structural precast concrete

Precast façade fire spread assessment to BR135 performance Criteria


British Precast Architectural and Structural has commissioned BRE’s Passive Fire Protection Department to assess precast cladding solutions against the performance criteria of BR 135 (Fire performance of external thermal insulation for walls of multi-storey buildings) if tested in accordance with BS 8414-2: 2015. BRE looked at three scenarios where single leaf precast facades are used with three different types of insulation (Kingspan K15, Xtratherm Safe-R, Celotex RS5000) in conjunction with steel fixings. The results of all three assessments demonstrated that single leaf facades with these insulations satisfy the performance criteria of BR135.”


- Precast façade backed with Kooltherm K15 insulation – BR135 Assessment report


- Precast façade backed with Celotex RS5000 insulation – BR135 Assessment report


- Precast façade backed with Xtratherm Safe-R insulation – BR135 Assessment report





British Precast Architectural and Structural, part of British Precast.                                                                                                                                                              

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