Technical Description of the Product

Silverseal HS Compound is a Gypsum based mortar material, used to reinstate the fire resistance performance of floor constructions where they have been provided with apertures for the penetrations of multiple services. Silverseal HS Compound is supplied as a dry material, and is mixed with water to the required ratio prior to installation.

Silverseal HS Compound when mixed is self-supporting in a floor to spans of 1800mm. Temporary non combustible shuttering is required to support the wet weight of the Silverseal HS Compound. The seal is high strength, non-combustible and is load bearing. Silverseal HS Compound has a fire resistance to EN1366-3 up to EI120, including BS476 Pt 20 and BS6399-1 Loading for Buildings “Code of Practice for dead and applied loads”.

Intended Use

The intended use of Silverseal HS Compound is to reinstate the fire resistance performance of rigid floor constructions where they are penetrated by various cables and metallic pipes.

The specific elements of construction that the system Silverseal HS Compound may be used to provide a penetration seal in, are as follows:

• Fire resistance testing to EN 1366-3: 2009.
• Classified as EI 120 using EN 13501-2.

Key Product Points

• Rapid setting, zero shrinkage formulation - can be used as pourable or trowel grade, gas tight seals.
• Excellent workability ranging from stiff to pourable mix.
• Good load bearing performance in floor seals. (Consult Technical Department for details).

Installation of Silverseal Mortar should be carried out by an approved applicator.  Technical support is available through contacting us.  


*Important Notice

Please read technical data sheet for more information or consult Technical Department for details. 

Product Data Sheet
Product MSDS

For large openings and for load bearing requirements the mortar will need reinforcement with steel.  Where this is required help should be sort from our technical desk 02476 422200 who will calculate your requirement and provide technical assistance.