FSi Pyropro LST is an acrylic based sealant used to reinstate the fire resistance performance of wall and floor constructions where they have been provided with apertures for the penetrations of multiple services. Also forms linear gap seals where gaps are present within the wall and floor constructions and linear joints where wall and floor constructions abutt.

PyroProLST Fire Resistant Sealant is a water based acrylic sealant which has been developed utilising specialist materials which significantly reduce smoke and toxic fumes in the event of a fire, PyroProLST therefore is authorised for use on the London Underground network, and other underground/ tunnel networks.

Pyropro LST has slight intumescent properties that cause it to swell upon heating.

The sealant is either gunned or trowelled into the aperture in or between the separating element/elements to a specific depth utilising various backing materials.

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• Features & Benefits
• Areas of Use
• Product Technical Data
• Backing Material
• Key Installation Points
• Installation

Features & Benefits

• Flexible, high performance water based Fire Resistant Sealant, for use in gaps up to 60mm
• Conditioned to Type X in accordance with EOTA TR024
• Tested in accordance with many major global certification standards
• Easy gunning and tooling
• Tested practically, with the installer in mind. Tested with various common backing materials
• Provides smoke seal
• Manufactured and tested alongside the entire FSi Fire Stopping range in the UK
• Authorized for use on the London Underground Network – Product ID 2199
• Mechanical Adhesion, Tensile testing & Shore Hardness to ISO 9046:2005, ISO 8339:2005 & ISO 7619-1:2011
• Fire resistance tested in flexible walls, rigid walls and floors
• Tested in Linear Joints up to 50mm wide
• Tested in large service openings up to 490 x 150mm
• Tested with Metallic Pipes, Cables, Cable Bunches, Cable Trays and Cable Ladders
• Causes no known effects to plastic pipes, plastic cables, sheathing or metallic components
• For use in low movement joints, remains flexible
• Halogen free, resists fungi and vermin
• Certifire 3rd Party Certification CF 517
• Fire resistance testing to EN 1366-3 EI 120, EN 1366-4 EI 240 and BS 476 300mins
• Fire resistance testing to ASTM-E 1966, UL 2079
• CAN/UL 115-11 - ULus & ULc Listed
• Resistance to Fire Classification EN 13501-2
• Reaction to Fire Classification EN 13501-1
• VOC Tested - ASTM D2369-10, LEED 2009-EQ041 SCAQMD
• Acoustic Isolation to EN 10140 to 48dB
• Air Permeability testing to EN 1026 to 600Pa - 100Pa 0.0/0.0 m3/h/m²

Areas of Use

• Flexible and Rigid Walls
• Rigid Floors
• Multi-Service penetrations
• Blank Openings
• Head of Walls
• Authorized for use on the London Underground Network
• To reinstate fire resistance through walls and floors
• To seal multi-service penetrations
• Linear Construction Joints
• Tunnel systems
• Prevention of air leakage
• Maintains Acoustic performance
• Assumed working life 30 years

Product Technical Data

Backing Material

Stonewool (min. 80kg/m³) or PE backing rod where required can be use as backing materials, though the Pyropro LST should be installed correctly to achieve the performance needed.

Key Installation Points

For good adhesion the surfaces of the building elements shall be free of any dust or grease and may need to be primed, on good clean, virgin concrete & masonry, no priming required.

Ensure that the aperture and services in question are tested with Pyropro LST and the site conditions are within the application specification. An annular space needs to be present around the service to apply sufficient installation depth.

All services and apertures need to be clean and clear of all dust and loose particles. The aperture temperature needs to at 5℃ or above at time of installation.

Upon installation make sure that you install the Pyropro LST around all services needed.

Once compacted, smooth off the Pyropro LST to produce a professional finish.

Installation

Please refer to the Product Data Sheet in the "Data Sheets" tab further above for information on the below areas:

• Performance Data - Linear Joints Seals - Walls (page 3 - 5)
• 250mm Rigid Walls
• 100mm Rigid Walls
• 120mm Rigid Walls
• Performance Data - Linear Joints Seals - Floors (page 6 - 7)
• 150mm Rigid Floors
• Performance Data - Movement (page 8)
• 150mm Rigid Walls
• 150mm Rigid Floors
• Extended Scope of Works (page 9)

IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contacted to obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and Conditions and should be applied only by an individual with the necessary expertise and experience. We will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.