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BG, Luceco & Masterplug orders over £50 qualify for free UK mainland delivery
BG, Luceco & Masterplug orders over £50 qualify for free UK mainland delivery

Astro INTU Mastic - Intumescent Acoustic Mastic

Original price £1.99 - Original price £3.82
Original price
£1.99 - £3.82
Current price £1.99
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Astro Intu Mastic is a water based acrylic sealant used to reinstate the fire resistance of wall and floor constructions in linear joints and where apertures are penetrated by multiple services. Astro Intu Mastic Fire Resistant Sealant has been developed utilising specialist polymer technologies allowing it to be tested and Certified to internationally recognised standards, including CE marking and UL Listings. Astro Intu Mastic Fire Resistant has been tested and Certified as part the Astroflame Fire Stopping range. The Astro Intu Mastic system can be installed across a variety services and substrates including,

  • Flexible and Rigid Walls
  • Rigid Floors
  • Multi-Service penetrations
  • Blank Openings
  • Head of Walls
  • Astro Batt

For specific details please refer to the test certification.


General Characteristics Inspection Method Value
Product Data (uncured)
Density (S.G) ASTM D792:13 1.63
Appearance Paste, matt finish
Resistance to flow ISO 7390 : 2003 Pass
Product Data (after curing)
Hardness Shore A ISO 7619-1 : 2010 63/39
Movement Capability 7.5%
Operating Temperature °C -5 to 40
Loss Mass of Mass on Heating ISO 3451-1 (Method A) 68.34
Flexibility - Bend Test ISO 1519 Pass
Conditioning EOTA TR024 Type X