17th May 2022 How the Fire Rated Shadowline testing was conducted? The pilot scale fire resistance test was carried out by CSIRO North Ryde in accordance with AS 1530.4-2014 of a non load bearing plasterboard lined wall system. The specimen comprised a 1200mm x 1200m plasterboard lined wall system which incorporated 64mm steel stud wall framing lined on both sides with 16mm thick CSR Fyrchek platerboard. The wall specimen included an Intrim 800 Series Shadowline skirting board, screw fixed along the bottom of the framing, on both sides of the wall. The bottom of the cavity was lined with friction fitted 300mm x 50mm thick x 60kg/m3 Bradford Fibretex 350 Rockwool board continuously behind the skirting board. The skirting board was Intrim® SK800 Shadowline® System, made from FR treated medium density fibreboard (FR MDF), that was 18mm thick and 140mm high. The joint between the plasterboard and skirting board was set using a standard plaster setting compound.