The Boss 5 hour fire sealant offers the best fire rating of all acrylic and PU sealants on the market, offering maximum protection from fire and smoke in both integrity and Insulation. With an FRL of -/300/300 for most applications, FireMastic-300 is unrivalled. And because it is intumescent, it’s more efficient and requires half the volume of sealant than most other brands to achieve the required FRL.
As an acrylic emulsion, FireMastic-300 is simple to use and cleans up easily in water.
Other Key Features are:
5 hours industry-best mastic offering FRL of -/300/300
Acoustic reduction up to 65dB
Used for sealing linear gaps and around ducts, dampers, cables and metallic pipes
Suited to plasterboard, masonry, hebel, Speedpanel and timber wall installations
Approved to AS1530.4(2005), AS4072.1 and EN1366
Highly flexible, up to 40% movement
High yield so installation material costs and labour are both decreased
Available in standard colours of grey and white, other colours available upon request
Widely adaptable to seal around other passive fire products such as dampers, pillows and cable & pipe penetrations
Can be painted once cured
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