SoftSeal Linear Joint Seal
Fire Stopping Products

FIREPRO® SoftSeal Linear Joint Seal

Flexible and adaptable. 

Fire stopping at linear joints within wall cavities and voids is crucial for reducing the spread of flames and smoke. FIREPRO® SoftSeal Linear Joint Seal is designed to accommodate structural movement in these areas whilst maintaining fire performance and acoustic properties of walls. 


The ROCKWOOL FIREPRO® range is comprehensively designed for fire protection and fire stopping products. FIREPRO® SoftSeal Linear Joint Seal is made up of products specifically designed to create linear joint seals in buildings where movement is a factor in the design.

FIREPRO® SoftSeal Linear Joint Seal comprises low density stone wool mineral wool insulation, SoftSeal batt, pre-coated with SoftSeal Flexible Coating. It is designed for installation horizontally or vertically and can be applied to linear joint widths up to 300mm§. Where masonry walls finish below a suspended ceiling height there is significant risk of spread of flames and smoke, in addition to noise travelling between rooms day to day. FIREPRO® SoftSeal Linear Joint Seal can be used as a ‘head-of-wall’ barrier to extend the fire resistance and acoustic performance properties of the walls. 

FIREPRO® SoftSeal Linear Joint Seal has been tested to BS EN1366-4 and has been proven to provide up to 4 hours’ fire performance (E240 & EI80). It has also been assessed for its movement capabilities, tested to accommodate movement, expansion and contraction, of +/- 25%.



CE Marked

  • Easy to apply – designed for specifically for linear joints.
  • Save time on-site – easy to handle and install, for fast and effective fire stopping. 
  • A sound choice – the FIREPRO® SoftSeal Linear Joint Seal is acoustically absorbent, preventing noise transfer through penetrations and linear joints in walls, ceilings, roofs and floors.
  • Stringent testing – tested for durability to current EU guidelines, it is assured that FIREPRO® Softseal Linear Joint Seal has the most robust fire stopping properties.
  • Supplied pre-coated for ease of application, saving valuable time and money.

Product Properties

Compliance EN1366-3 2009 EN13501-2 CE Marked
Density 80Kg/m3
Material Coated one side
Reaction to fire Fire Resistance up to 3 hours
Acoustical Performance 40dB to EN10140
Airflow resistance Air permeability Tested to EN1026 up to 600Pa. Leakage @50Pa 0.1/1.4m3/m2/h
Water absorption Water permeability No Leakage up to 300Pa Tested to EN 1027

Product range and ancillaries

Item number External item number Country Thickness (mm) Width (mm) Length (mm) Pieces Per Pack m² Per Pallet
193693 193693 UK 100 200 1200 72 17.28

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