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EVERBUILD Pyro Mate Firesil, Neutral Cure Fire-Rated Silicone Sealant, Interior, White

EVERBUILD Pyro Mate Firesil, Neutral Cure Fire-Rated Silicone Sealant, Interior, White

Adhesives & Sealants
EVERBUILD

Everbuild is a well-established brand under the Sika group, specializing in high-performance sealants, adhesives, fillers, and building chemicals. Known for its reliable and durable products, Everbuild caters to both professional tradespeople and DIY enthusiasts. The product range includes silicone sealants, acrylic fillers, foam sealants, and various specialty construction chemicals designed to meet the demands of modern construction and renovation projects across the UK and beyond.

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General Specifications
Packaging 300 mL
Usage Fire-Rated Joint Sealing In Walls, Partitions
Usage Area Interior
Color White
Chemical Base N/A
Storage Conditions +5 °C to +30 °C - Store in cool, dry conditions. Protect from frost.
Density 1.35 g/cm³
Service Temperature -40 >< +140
Application Time 10 - 15 min.
Curing Time 24 hours
Application Thickness 2 >< 3 mm
Application Method Gun
UV Resistant No
Moisture Resistant Yes
Mold Resistant No
Paintable Yes
Sealant Yes
Flexible Yes

A neutral cure, fire rated silicone sealant.

A neutral cure, elastic silicone sealant which conforms to the EN1366-4 standard for fire retardancy and has a fire rating of up to 4 hours in certain joint configurations. CE Marked under EN15651-1:2012 type F-EXT-INT CC class F 25LM. 

  • Fire rated to EN1366 Part 4.
  • Neutral cure – adheres to most building surfaces, porous and non porous.
  • Permanently flexible.
  • Excellent weathering characteristics – suitable for internal and external use.
  • Can be used in joints up to 50 mm wide and 25 mm deep.
  • No priming required for most construction substrates.
  • Non slump - easy to apply and tool off.
  • Long tooling time 20-30 minutes.
Usage
  • All building joints which require a fire rating.
  • Sealing joints, voids and irregular holes in fire walls, partitions and other structures.
  • Fire rated expansion joints.
Advantages
  • Fire rated to EN1366 Part 4.
  • Neutral cure – adheres to most building surfaces, porous and non porous.
  • Permanently flexible.
  • Excellent weathering characteristics – suitable for internal and external use.
  • Can be used in joints up to 50 mm wide and 25 mm deep.
  • No priming required for most construction substrates.
  • Non slump - easy to apply and tool off.
  • Long tooling time 20-30 minutes.
 
Packaging

Generic Cartridge with Nozzle.
Colour

White
Technical Information
Shore A Hardness

25 to 30 (Shore A)

Secant Tensile Modulus

<0.4 N/mm2 @23 °C (ISO8339)

Movement Capability

25 % (ISO9047)

Elastic Recovery

>70 % (ISO7389)

Service Temperature

-40 to +140 °C
Application Information
Sag Flow

<3 mm (ISO7390 at 50 °C and 50 % RH)
Curing Rate

1-2 mm/24hrs at 50% Relative Humidity/23 °C
Tack Free Time

20 to 30 minutes