When installing pipework through fire rated walls and floors, core holes are often larger than the service to allow easy installation.  These gaps formed around services provide a ready route for fire spread unless they are effectively fire stopped and sealed. 
 
As part of the ROCKWOOL FirePro® range, Pipe Wrap Roll is an economical solution for fire stopping pipework penetrations. ROCKWOOL’s Pipe Wrap Roll protects both plastic and insulated metallic pipework in both floors and walls, supplied as a 25m long roll contained within a box dispenser. FirePro Intumescent Pipe Wrap Roll is 40mm wide and 2mm thick, and is able to fit around pipes up to 200mm (O.D.)
Multiple layers may be required to the service line dependent on the material, dimensions and fire rating required.