FSi PS Coating is an ablative, highly advanced flexible coating used to apply to uncoated stonewool boards to reinstate the fire resistance performance of wall and floor constructions where apertures are penetrated by single or multiple services.

PS Coating is tested and Certified as part the FSi Fire Stopping range. When PS Coating is applied to uncoated stonewool of the correct density it can be installed across a variety services and substrates including:

• Flexible and Rigid Walls
• Rigid Floors
• Multi-Service penetrations
• Blank Openings
• Head of Walls

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• Features & Benefits
• Areas of Use
• Certification & Testing
• Technical Data
• Key Installation Points
• Performance Data

Features & Benefits

• Highly flexible, high performance flexible ablative coating
• Can be installed onto uncoated stone wool of a minimum thickness of 50mm and a minimum density of 140kg/m³
• Developed with a viscosity suitable for vertical and horizontal applications
• Simple to install, through brush or trowel application
• Provides smoke seal
• Manufactured and tested alongside the entire FSi Fire Stopping range in the UK
• Can be spray, brush or trowel applied
• Suitable for indoor use without additional environmental protection
• Remains flexible between -5°c to +70°c
• Easy to use fibre free coating
• Life expectancy of over 25 years
• Suitable for large openings in walls with additional supports
• Internal use - ETAG 026-3 (used as European Assessment Document EAD) Type Z1

Areas of Use

The intended use of PS Coating is to reinstate the fire resistance performance of rigid and flexible wall constructions where they are penetrated by various cables and metallic pipes or blank seals.

• To reinstate fire resistance through walls and floors
• Multi-service penetrations
• Prevention of air leakage
• Maintains acoustic performance
• Assumed working life 25 years
• For internal use
• Mineral fibre boards are 50mm thick and supplied in overall dimensions 1200mm x 600mm with a density of 140kg/m³ and a resin content of less than 4.5%
• Pyrocoustic Sealant is required to seal all joints and junctions during the sealing process
• Pyropro HPE Sealant is required to seal around specific services. Pyropro HPE Sealant is subject to a separate TDS document

Certification & Testing

• Fire Resistant testing to EN 1366-3 EI 60
• Fire Resistant testing to EN 1366-3 EI 120 Blank Seal
• Fire Classification to EN 13501-2
• IET (IEE) 17th Edition Fire Stop Compliant to Regulation 527.1-3 - Electrical Installations
• BS 7671-2008 Chapter 42 & 52 - Electrical Installations Fire Resistance
• Fire resistance tested in flexible & rigid walls, Composite Panel and CLT
• Air Permeability testing to EN 1026 to 600Pa
• Acoustic Isolation testing to EN 10140 to 51dB

Technical Data

Key Installation Points

Ensure that all the requirements are met with regards to PS Coating specification.

All substrates and services must be clean, dry and free from contaminants.

All stone wool boards must be minimum 140kg/m³ in density. PS Coating must be applied to a nominal thickness of 2.5mm wet film thickness (WFT) if coating the stone wool boards.

When using the PS Coating to install the stone wool boards all edges must be coated using PS Coating or Pyrocoustic Sealant prior to final fitting.

Fit the coated stone wool board as per Stopseal Batt installation guidance.

Performance Data

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

• Performance Data - Walls (page 3 - 4)
• 100mm Rigid and Flexible Walls
• Extended Scope of Works (page 5)

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.