Fernomastic

Bloem FernoMastic is an up to 240 minutes fire rated intumescent sealant designed to prevent the spread of fire, smoke and gases through openings in fire rated walls and floors, specifically linear joints and openings for building service penetrations. In case of fire Fernomastic generates a fire seal by forming a durable intumescent crust.
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Properties

  • Prevents passage of fire up to 240 minutes (EI240)
  • Sound reduction of Rw 40 dB
  • Low emissions, environmentally and user friendly
  • Suitable to most surfaces including concrete, masonry, metals, glass, plastics and many other non-porous materials
  • No priming necessary to most substrates
  • Joint movement capability 7,5% for use in joints up to 50 mm wide
  • Easy extruding and tooling for a smooth surface finish.
  • Tack free after 60 minutes
  • Over paintable with most emulsion based and solvent based (Alkyd) paints

Applications

  • Flexible walls
  • Rigid walls
  • Rigid floors
  • Joints width in floors up to 100 mm
  • Joints width in walls up to 50 mm
  • Plastic pipes such as PE, SAN+PVC and PP
  • Electric cables, cable bundles, wirings, Alupex, metal pipes with and without insulation.

Testing / certification

  • Tested according to NEN 6069 and EU Standard
  • EN 1366-3 and EN 1366-4, ETA 22/0714 and ETA 23/0017
  • CE Certificate No. 2531-CPR-CXO10391
  • Certified according to EAD 350454-00-1104 and
  • EAD 350141-00-1106
  • Emicode EC1-Plus, VOC A+ Regulation, BREEAM, BlueAngel, LEED v4.

Technical data

Description: Intumescent acrylic paste
Classification: Tot E240, EI240*
Application temperature: +5°C to +30°C
Service temperature: 15°C to +70°C
Hardening time: Full cure up to 5 days depending on depth, humidity and temperature
Movement capability: 7.5%
Density (gr/ltr.): 1.6
Reaction to fire: Class F (not tested)
Thermal conduction: 0.82/0.88 W/mK @ 20mm. depth
Sound isolation ≥12mm. depth: Seal double sided: Rw 40dB
Service life: 25 years
Skinning time: 60 min
* For achieved fire resistance per application, see test report (ETA 22/0714 & 23/0017).

Handling of the product
The product can be applied using a standard hand or batteryoperated gun. Smooth the sealant with a jointing tool moistened with water. Tools and stains can be cleaned with water. Hands can be cleaned with Bloem PowerScrub wipes. Once cured, the sealant can only be removed mechanically.

Packaging
310 ml cartridges, 25 cartridges per box
600 ml sausages, 12 sausages per box

Colour
Standard white

Storage and shelf life
Store in a cool and dry place (5°C < 25°C). Shelf life is at least 18 months in original packaging

Downloads

Safety datasheet
Technical datasheet

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