Fire-retardant mortar
Fire-retardant mortar - 1
Fire-retardant mortar - 2

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Fire-retardant mortar

For medium to large ducts with option of reconfiguration at a later stage if retrofitting wedges are used

  • Fire resistance rating: S90, S120
  • Colour: Grey
  • Max. processing time: 60 min
  • Shelf life from production: 12 Month
  • Min. processing temperature: 5 °C
  • Conditions to maintain shelf life from production: cool and dry storage area
  • Viscosity/consistency: Powder
  • Max. moulded density: 1.06 kg/dm³
  • Min. moulded density: 1.04 kg/dm³
  • Min. compressive strength: 2.5 N/mm²
  • Min. flexural strength: 0.8 N/mm²
  • Max. flexural strength: 1.5 N/mm²
  • Chemical basis: Cement and mineral additives
  • Max. compressive strength: 5 N/mm²
  • Smell/fragrance: Odourless
  • DIN: 4102-9

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You can refine your search by selecting different attributes

Art.-no. Weight of content Container Ratio of ingredients Fire resistance rating Quantity PU
10 kg Bucket 3 l water for 10 kg S90, S120
1 pcs
20 kg Sack 6 l water for 20 kg S90, S120

Packaging unit

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Structure of our article number

The article number is made up of the following: VVVVAAABBB
VVVV = 4 digits for prefix number (please note that the first digit is currently always 0)
AAA = 3 digits for dimension part 1
BBB = 3 digits for dimension part 2

Example article number structures:
Example 1: Screw with dimensions of 4x10 mm:
00574 10 (2 spaces between the 4 and the 10)

Example 2: Screw with dimensions of 10x20 mm:
005710 20 (1 space between the 10 and the 20)

Example 3: Flat washer with an internal diameter of 6 mm:

Information on price and image display

Price per packaging unit (PU):
The displayed price is always in line with the displayed packaging, if the PU is 250 the price for 250 units, if the PU is 300 the price for 300 units.

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Price for 100 units
Price for 1000 units


The quantity shows the number of pieces or units of measure contained in the order or delivery for the respective article.

Hazardous Material

Product information

Würth Catalogue

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Technical information

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  • Seals against fire and combustion gases

  • Temperature-reducing

  • Partitions rooms

  • Resistant to spray

  • Resistant extinguishing water jets

  • Does not cause corrosion to steel braces in reinforced concrete

  • Neutral to PVC cables

  • Suitable for pumping and for manual installation

  • Resistant to ageing

  • Neutral to tissue

  • Free of toxic materials and materials harmful to the skin or the environment

  • High yield

  • Good durability, therefore less formwork expense

  • Very good adhesion to the underlying surface on steel, concrete and masonry
  • Wall and ceiling ducts S120 Z-19.15-812

  • Wall and ceiling openings S90 Z-19.15-1333