Fire Rated Green Roof Systems

Our M-Tray® modular green roof system has a B ROOF t4 fire rating classification.

To meet current building regulations for fire stakeholders need to demonstrate that the whole ‘as installed’ roof system has a valid fire certificate, tested in accordance with CEN/TS 1187:2012 Test 4 External Fire Penetration and Spread of Flame and the classifications under BS EN 13501-5:2016 Fire Classification Of Construction Products And Building Elements.

A roof system when tested to CEN/TS 1187:2012 Test 4 Test Methods For External Fire Exposure To Roofs should achieve a European classification rating of B ROOF t(4).

Under Approved Document B only a test report to BS EN 13501-5:2016 for the exact construction or an EXAP report proves compliance; unless the green roof build-up from the deck to the finished surface includes a minimum 80mm of growing medium with less than 50% organic content.

M-Tray® by Wallbarn was tested according to CEN/TS 1187 and has both a Classification of B ROOF t(4) and an EXAP Report carried out in conformity with CEN/TS 16459:2019.
Furthermore, the growing medium is 100mm thick and contains less than 50% organic content. It complies both to BS 8616:2019.

This is construction law in England.  Similar laws apply in the building regulations of Wales, the building regulations of Northern Ireland and in the Technical Handbooks for Scotland.

> M-Tray B ROOF t4 Extended Application Report

> M-Tray B ROOF t4 Indicative Test Report

> M-Tray B ROOF t4 Classification Report long form

> M-Tray B ROOF t4 Classification short form

> M-Tray B ROOF t4 Test Report

> J002980 Walbarn Green Roof Module Substrate Specification incl Organics Content