Pyrocoustic Trowel Grade Sealant is a water based acrylic sealant used to reinstate the fire resistance of wall and floor constructions where apertures are penetrated by single or multiple services and linear gap seals where wall and floor constructions abut.
Pyrocoustic Sealant has excellent acoustic and movement capabilities.
Pyrocoustic Sealant is extensively tested. The sealant can be trowel applied.
Cure Rate: 3mm per day at 50% relative humidity 23°C
Specific Gravity: 1.56 - 1.66 g/cm3
Application temperature: +5°C to +40°C
Tack Free: 30 mins at 23°C, 50% RH
Water Resistance: Good when fully cured
U.V. Resistance: Good
Joint Movement: Remains flexible
VOC % Nonaqueous volatiles (105°C): 3.6
Acoustic: Up to Rw(C;Ctr) :63(-2;-7) dB
BREEAM International: Compliant
Expected Shelf Life: 18 months unopened
Key Product Points:
Can be used in flexible walls, rigid walls and floors
Can be used in linear joints up to 50mm wide
Can be used in large service openings up to 490mm x 150mm
Can be used in with Metallic Pipes, Cables, Cable Bunches, Cable Trays and Cable Ladders
Causes no known effects to plastic pipes, plastic cables, sheathing or metallic components
For use in low movement joints as remains flexible
Halogen free, resists fungi and vermin
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 and masonry, no priming required, though refer to substrate compatibility requirements
Ensure that the aperture and services in question are tested with Pyrocoustic Trowel Grade and the site conditions are within the application
Consider the movement of the joint to be sealed. This should include thermal, wind pressures, settlement and differential movement of components
Consider the characteristics of the substrates as they affect the choice of sealant, i.e. how the surface finish may be affected by sealant compounds and the possibility of discolouration due to oil migration or staining
Consider the location and environment of the joint to be sealed. Exposure to temperature extremes, ultraviolet light, radiation, chemical attack, standing water and vibration
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