Firesilicone B1 FR - McCoy Soudal

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Product Description

Firesilicone B1 FR by McCoy Soudal is a high-quality, one-component silicone sealant which also has the recognition of meeting the DIN4102 B1 standard for fire retardancy. As per this rating, the sealant can resist fire for up to 4 hours when applied to specific joint configurations.

Characteristics of Firesilicone B1 FR

  • The sealant is very easy to apply and offers permanent elasticity upon curing.
  • It has superb adhesion properties and also showcases strong resistance against UV radiation on most surfaces.
  • Has a low modulus and is also colourfast.
  • Conforms with the DIN 4102-Part 2: Class B1 fire rating requirements which allow it to resist catching flames for up to 4 hours with usual PE backing material.

Where Can It Be Used?

  • All construction and buildings that require a fire rating will look to use Firesilicone B1 FR as their preferred product of choice.
  • It is also extensively used in fire-rated expansion joints.

How To Apply Firesilicone B1 FR?

  • Take care to follow the standard industrial hygiene methods for applying sealants. Make sure to clean the surface and remove all traces of dust and grease.
  • If the sealant is applied to porous substances, Primer 150 should be used to prime the surface. It is recommended that a preliminary compatibility test be conducted before you proceed.
  • To enhance the adhesion properties on smooth surfaces, we advise you to use Soudal Surface Activator.
  • Use a caulking gun as the method of delivery for maximum impact.
  • As for backing material, we suggest the use of PE backer rods for correct joint dimensions.
  • Take care that during the application, the atmospheric temperature does not exceed room temperature conditions.
  • After application, clean the caulking gun with white spirit immediately. If the sealant cures, then it has to be mechanically removed by chipping it off.
  • Finish the applied sealant properly by using a soapy solution.

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