NAABA are currently renovating their office on Biggs Avenue. The RMWB had a concern with the right elevation wall. Two hour rated wall had to be maintained along the top chord.
CFS-SP WB spray from Hilti applied at the top of the truss top chord bearing space under the roof deck. It looked very light. We worked with Hilti firestop systems and provided NAABA with the ulc listing showing instructions for thickness to be applied for a 2 hour rating prior to their re-inspection with the RMWB. 

Existing mezzanine wasn't to code (see picture below). We designed a new mezzanine floor. Design included new staircase, railings, TJI-Joists, sub-floor, and LVL beams. We also designed all load bearing walls. Our client was local contractor JNA renovations.