FSi Pyrolastic Fire Resistant Silicone Sealant, a one-part, neutral curing silicone for construction joints. Pyrolastic cures at room temperature under the action of atmospheric moisture to give a permanently flexible silicone rubber.

Used to reinstate the fire resistance of wall and floor construction in linear joints and where apertures are penetrated by services, Pyrolastic has been developed allowing it to be tested and certified to internationally recognised standards, including CERTIFIRE, UL-EU and CE marking.

Intended areas of use

• Rigid walls and floors
• Head of wall joints
• Non combustible services
• Internal or external
• Movement joints
• Sealant for facade elements and glazing

Quick Links - Click To Jump To Section:

• Features & Benefits
• Testing and Approvals
• Product Specification
• Test Data
• Pre-Installation
• Applying the Sealant
• Limitations
• Service Support Requirements

Features & Benefits

• Prevention of air leakage
• Maintains acoustic performance
• Assumed working life of 25 years
• Highly flexible
• Cold smoke seal
• Wide range of backing materials
• Linear joints up to 60mm in width
• Up to 240 minutes fire resistance performance

Testing and Approvals

• CE marked, UL-EU & CERTIFIRE approval
• EN 1366-3, EN 1366-4 Fire resistance
• EN 13501-1 Reaction to fire
• EN 13501-2 Fire resistance classification
• EN 1026 Air Permeability classification
• EN 10140-2 Airborne sound
• CE marked to EN 15651-1 & EN 15651-2

Product Specification

Test Data

Pre-Installation

Ensure that the aperture and services in question are approved for use with Pyrolastic Silicone, and the site conditions are within the application specification. All services and apertures need to be clean and clear of all dust and loose particles. The aperture temperature needs to be at 5°C or above at time of installation.

Applying the Sealant

Once an appropriate seal backing has been install the sealant should be applied taking care to ensure that the joint is completely filled. Smoothing off the seal ensures good contact between the sealant and the bonding surfaces. Smoothing off should be carried out using a dry spatula before the surface skin is formed. Areas applied with fresh sealant may be cleaned with a dry pad or a pad soaked in a solvent. If the sealant is already cured it can be removed by scraping or using a special silicones remover. For more information, please consult FSi technical department.

Limitations

Pyrolastic Silicone must not be used:

• To produce aquariums.
• To seal swimming pool joints
• In food grade applications
• Particular atiention should be paid to application on materials which can give out certain components over time (butyl sealant, EPDM rubbers, polychloroprenes, etc.)

Service Support Requirements

Services should be rigidly supported via steel angles, hangers or channels, not further than 400mm from the surface of the sealing system on both faces of wall and top face of floor unless specified otherwise in the performance data.

Installation

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

• Linear joints in rigid floor
• Linear joints in steel faced rigid floor
• Linear joints at head of wall
• Linear joints in at head of wall
• Linear joints in steel faced head of wall
• Linear joints in rigid walls
• Linear joints in steel faced rigid walls
• Linear joints in timber faced rigid walls
• Linear joints in flexible & rigid walls
• Metallic pipes rigid walls
• Cables pipes rigid walls

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.