PD CEN/TS 16459:2019

What is PD CEN/TS 16459– External fire exposure of roofs and roof coverings about?  

PD CEN/TS 16459 is a technical specification document on external fire exposure of roofs and roof coverings.  

PD CEN/TS 16459 gives guidance on the process and development of extended fields of the application using test results obtained from CEN/TS 1187, tests 1 to 4, and included in test reports, and other relevant information to evaluate and classify the performance of roofs/roof coverings.  

PD CEN/TS 16459 provides a methodology to consider the possible effect(s) on the classification to EN 13501-5 from single or multiple changes to the individual product and end-use application parameters of the roof/roof covering. Specific application guidance is given in Annex A, Annex B, Annex C and Annex D for CEN/TS 1187, tests 1 to 4 respectively. 

Who is PD CEN/TS 16459– External fire exposure of roofs and roof coverings? 

PD CEN/TS 16459 on External fire exposure of roofs and roof coverings is relevant to: 

• Civil engineers 
• Manufacturers of buildings and architect  
• Fire safety department 
• Manufacturers of fire safety equipment  

Why should you use PD CEN/TS 16459– External fire exposure of roofs and roof coverings? 

Tests of roof coverings are primarily used to assess fire resistance by preventing fire penetration into the structure's interior. 

PD CEN/TS 16459 outlines a procedure to develop rules for extended application and lists application rules which have already been developed in Annex A to Annex D for test methods 1 to 4 from CEN/TS 1187, where Annex A is related to test method 1, Annex B relates to testing method 2, and so forth. 

Overall, PD CEN/TS 16459 describes the extended application of test results, and outlines how better and more accurate fire exposure tests can be conducted for roof coverings. 

What’s changed since the last update? 

PD CEN/TS 16459:2019 supersedes PD CEN/TS 16459:2013, which is withdrawn and includes: 

• The normative references have been updated 
• A new definition was added in 3.1 (term “layer”) 
• The requirements to involve notified bodies in the preparation of EXAP rules were deleted from 5.4  
• Under clause 7, table 5 was updated according to the insertion of new EXAP rules in different annexes and sections thereof, i.E. (See next lines) 
• 3.5 roof lights and roof windows: a set of specific rules were moved to annex A 
• 3.11 liquid applied roof waterproofing kits: a set of specific rules was moved to annex A 
• The rules for the parameter „Application on existing roofs (“renovation”) have been reconsidered for all Annexes and were amended and/or specified in more detail 
• Annex E, Data acceptance principles for the submission of a change request to EXAP rules in Annex A to Annex D is completely new: This annex sets out to establish the principles upon which data presented to CEN TC127/WG 5 (External fire exposure of roofs and roof coverings) will be reviewed by the committee or its nominated Ad hoc Sub Group for consideration