Pyropro HPE Sealant is a water based, acrylic sealant utilising a reactive formula that has intumescent properties to reinstate the fire resistance performance of wall and floor constructions where the penetrations of single or multiple services are present.
Pyropro HPE Sealant expands upon contact with heat, the high-pressure reactive process ensures that the material will expand up to 20 times under an expansion pressure of 7 bar. The sealant is gunned or trowelled into the annular space in or between the separating elements to a specific depth in order to maintain the fire resistance of the construction in the event of a fire.
Combustible Pipes up to 125mm dia - PVC, PE, PP, ABS and PEX/MLC
Sealing elastomeric foam and glass wool insulation in irregular applications
Causes no known affects to plastic pipes, plastic cables, sheathing or metallic components
Key Installation Points:
For good adhesion the surfaces of the building elements shall be free of any dust or grease and may need to be primed. On good, clean virgin concrete & masonry, no priming required, though refer to substrate compatibility requirements
Ensure that the aperture and services in question are tested with Pyropro HPE and the site conditions are within the application specification. An annular space needs to be present around the service to apply sufficient installation depth
Consider the characteristics of all available sealants for performance capabilities, hardness after weathering, movement capabilities, in both extension and compression, adhesion properties and chemical resistance
Combustible service penetrations must be independently supported each side of the seal
Mineral wool (80kg/m³) or PE backing rod where required can be used as backing material for Pyropro HPE Sealant. Backing material is not needed within all installations, though the Pyropro HPE Sealant should be installed correctly to achieve the performance needed. Leave a minimum depth of 25mm to install HPE
Apply Pyropro HPE to the remaining space around the penetrations. The sealant should be installed to the minimum 25mm depth within a minimum 20mm annulus around the service
Once the Pyropro HPE has been installed to the specified depth on both faces of the penetration seal, smooth over the seal. This can be done with a spatula and water