Fire safety guide on flat roofing published by TN International

The guidance details the background to this important issue in the industry and explains how to interpret external fire ratings such as BS 476 Part 3 and BS EN 13501-5. It also focuses on the in-depth process that manufacturers must go through to achieve a Broof (t4) fire rating and, further, outlines Best Practice advice on how to interpret these fire test results.

As well as exploring the various considerations involved with both warm and inverted roofs, the guide advises on the fire ratings for terraces and balconies, the latter requiring construction to BS 8579:2020. In addition, it examines how the latest cap sheets incorporate innovative graphite technology which help in preventing the spread of flames on a roof.

TN International’s guide concludes by offering five key tips for specifiers who are assessing the fire credentials of a particular system, duly pointing out that some manufacturers only have fire test data showing one thickness, such as 120 mm PIR, which means the data can be rejected if the insulation thickness required is different.

A handy selection guide to specifying Broof (t4) flat roofing systems is provided in order to help simplify the specification process further.

*Request a copy of ‘Fire Safety Standards in Flat Roofing: A Specifier’s Guide’ by sending an e-mail to TN International​ at: [email protected]