Monokote® Z-106 HY

Monokote® Z-106 HY

GCP Applied Technologies Third party certifications:
  • BSI Kitemark

    BSI Kitemark

    Certificate type

A spray applied structural fire protection system. Medium density cement based plaster for semi-exposed commercial applications susceptible to damage.

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  • Structural fire resistance.
  • Steel beams and columns.
  • Composite deck.
  • Concrete.
  • Cellular beams.
  • Refurbishment or new construction.


A Portland cement based cementitious fireproofing designed to meet specific commercial and industrial fire protection requirements on structural steel members, floor/ ceiling and roof/ ceiling assemblies. It is formulated for use in areas susceptible to damage, high humidity and semi exposed conditions. Being Portland cement based it is hard and resistant to moisture and abrasion.

In both BS 476 and the new European Standards the fire resistance performance of elements is judged against the three criteria of load-bearing capacity, integrity and insulation. The European Classification System will use the abbreviations of R, E and I respectively. Z-106 HY is to be used with GCP Injection system and Monokote® Accelerator to reduce the set time. The applied fireproofing will set typically within 15 minutes; thus, allowing the operative to apply a second coat almost immediately. This unique fast setting properties enables Z-106 HY to withstand adverse weather conditions encountered during the construction phase. It is, therefore, ideally suited for application to the building whilst in its “open envelope” stage.


  • Structural fire resistance.
  • Steel beams and columns.
  • Composite deck.
  • Concrete.
  • Cellular beams.
  • Refurbishment or new construction.


  • Longevity: If undisturbed, Monokote® is designed to last for the life of the building.
  • Proven in-place performance: It will stay in place during construction phase, for the life of the building until the day of the fire and meanwhile the intervention of the fire-fighters.
  • Safety: Monolithic barrier with no joints and not reliant on a chemical reaction.
  • Thin system: No need to allow the room between steels and over-cladding for expansions that is required for intumescent coating.
  • Quality: On-site quality control done by using the GCP Yield Kit Box.
  • Mechanical performance: Great resistance to mechanical aggressions, humidity and condensation, thanks to its over 80% of binding agents.
  • Value for money: Direct application on unprimed steel with no corrosion pre-treatment in a C1 environment (BS EN ISO 12944-2:1988).
  • Program benefit: Installation to start as soon as the concrete deck of the floor above is poured.

General information

Uniclass 2015

Pr_35_31_64_12 Cementitious rendersPrimary


M22/120 Sprayed

Specification data - Cementitious renders

Product Reference

Monokote® Z-106 HY


30 minute fire rating to BS 476-21

60 minute fire rating to BS 476-21

90 minute fire rating to BS 476-21

120 minute fire rating to BS 476-21

180 minute fire rating to BS 476-21

240 minute fire rating to BS 476-21

Surface finish

As applied

Standard product features

Barrier/ Bonding coats:

Seek advice from GCP regarding certain substrates, e.g. primed steel and all concrete surfaces.




Seek advice from GCP.

Dry density:

353 kg/m³ (22 pcf).

Finishing coat:

Seek advice from GCP.

Product Options


A minimum thickness of 10 mm is recommended and a thickness up to 84 mm can be applied. Alternatively, a fire rating to BS 476-21 (30 minutes - 4 hours) can be specified. Refer to the Hp/A table supplied by GCP and/ or ASFP yellow book.

Third party certifications

  • British Standards Institution (BSI) - certficate : Monokote® Z-106 HY has been fully tested and assessed under BS 476 part 21: 1987

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