ISLS18131 Everbuild

Trade Counter Pyro Mate Fire Rated Sealant

  • Pyro Mate Silicone is a neutral cure elastic silicone sealant which conforms to BS 476 Part 20/EN1366-4 (2006) for fire retardancy and has a fire rating of up to 4 hours in certain joint configurations.


Product Description

  • Conforms to ISO11600 class: F 25LM
  • Can be used in joints up to 30mm wide
  • Tested for air permeability to EN13141-1 Ventilation for buildings
  • Neutral cure - adheres to most building surfaces, porous and non porous
  • Excellent weathering characteristics - suitable for internal and external use
  • Permanently flexible (25% movement accommodation)
  • Performance testing of components/products for residential ventilation.
  • Pyromate is a neutral cure, elastic silicone sealant which conforms to the DIN4102 standard for fire retardancy and has a fire rating of up to 4 hours in certain joint configurations (EN1366 Part 4 - NBN713.020)
  • Also conforms to SNJF norms
  • Acoustic rated to BS EN ISO 140/3


Benefits Fire rated to EN1366 Part 4 Neutral cure - adheres to most building surfaces, porous and non porous Permanently flexible (25% movement accommodation) Excellent weathering characteristics - suitable for internal and external use. Can be used in joints up to 30mm wide. No priming required for most construction substrates Non slump - easy to apply and tool off. Areas For Use All building and glazing joints which require a fire rating. Sealing joints, voids and irregular holes in fire walls, partitions and other structures; also for maintaining the integrity of pipes and cables that penetrate them. Fire rated expansion joints. Limitations Do not use on surfaces that bleed oils or plasticisers or in contact with bitumen or asphalt. Do not attempt to sand down. Finish smooth as per directions. Not overpaintable Surface Preparation All surfaces must be clean, dry and dust free. All loose or flaking surface coatings, and old sealant and mastic joints, should be removed before application. Application The surfaces to be must be clean, dry and free from dust, grease and other contaminants. Improve adhesion by wiping surface with EVERBUILD GLASS CLEANER allowing all solvent to evaporate before applying sealant. Priming is generally not required, although we always advise testing small areas prior to use. Large voids should first be filled with EVERBUILD FIREFOAM B1 for maximum fire rating. Cut the tip of the cartridge taking care not to damage the thread. Apply nozzle and cut at an angle of 45 o with an opening slightly larger than the gap to be sealed. Apply using a standard sealant gun. Best results will be obtained by keeping an even pressure on the trigger and keeping the gun at a constant angle to the surface being sealed. To ensure a proper bond, always smooth the sealant down with a spatula or piece of wood wetted with linseed oil or white spirits. An improved joint appearance can be achieved by placing masking tape to both sides of the joint, removing within 5 minutes of application Single seal joints should be on the fire rated side of the structure. Specific Data Slump: Nil in joints up to 30mm, 0mm to ISO7390 Max Joint Width: 30mm Hardness 25-30 (Shore A) SG ~1.35g/cm3 Tack free time: 20 minutes Joint movement: + - 25% of original size Cure rate: 1-2mm/24hrs at 50% Relative Humidity 23'C Service Temperatures: -40 - +140`C Cleaning: Uncured white spirits; cured Sealant SILICONE EATER Health & Safety Consult MSDS for full list of hazards Storage Store in cool dry conditions between + 5°C and 30°C. PROTECT FROM FROST Shelf Life 12 months from date of manufacture. The technical data contained herein is based on our present knowledge and experience and we cannot be held liable for any errors, inaccuracies, omissions or editorial failings that result from technological changes or research between the date of issue of this document and the date the product is acquired. Before using the product, the user should carry out any necessary tests in order to ensure that the product is suitable for the intended application. Moreover, all users should contact the seller or the manufacturer of the product for additional technical information concerning its use if they think that the information in their possession needs to be clarified in any way, whether for normal use or a specific application of our product. Our guarantee applies within the context of the statutory regulations and provisions in force, current professional standards and in accordance with the stipulations set out in our general sales conditions. The information detailed in the present technical data sheet is given by way of indication and is not exhaustive. The same applies to any information provided verbally by telephone to any prospective or existing customer.

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