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Proset Refractory Mortar

High-Temperature Refractory Mortar

Wet Air-Setting Mortar for Firebrick, Fibre Insulation and Refractory Repairs

Proset Refractory Mortars are a range of ready-to-use air-setting refractory cements developed for the installation, bonding and repair of high-temperature refractory systems. Formulated using carefully selected alumina-silicate aggregates and chemical air-set binders, the range provides excellent adhesion, workability and reliable performance in applications operating at temperatures up to 1600°C.

Available in general-purpose, Proset 2, Proset 5-6 and Proset 80 formulations. Proset products are suitable for dense firebricks, insulating firebricks and refractory linings, delivering durable joints, simplified installation and dependable long-term refractory performance across both new construction and maintenance applications.

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Why Choose Proset Refractory Mortar

Proset provides dependable bonding performance for refractory linings and high-temperature insulation systems.

  • Ready-to-use formulations requiring no on-site mixing or preparation.
  • Air-setting technology for strong initial bond strength and reliable installation.
  • Excellent adhesion to dense and insulating firebricks and refractory linings.
  • High-temperature performance with grades suitable for applications up to 1750°C.
  • Smooth application characteristics for efficient laying, jointing and repair work.
  • Durable refractory joints providing long-term structural integrity and service life.
  • Suitable for new installations and maintenance across industrial furnaces, kilns and process equipment.
  • Consistent factory-controlled quality delivering dependable performance in demanding environments.

Proset Wet Air Setting Cement (WASC) Technical Data

Property Proset 2 Proset 5-6 Proset 80
Product Class Wet Air-Setting Refractory Mortar Wet Air-Setting Refractory Mortar Wet Air-Setting Refractory Mortar
Maximum Service Temperature 1600°C 1600°C 1750°C
Quantity Required per 1000 squares 200 kgs 200 kgs 200 kgs
Chemical Analysis (%)
Al2O3 25.5 10.5 71.5
SiO2 69.0 84.0 21.0
Cao <0.5 <0.25 <0.40
Fe2O3 <1.5 <0.5 <1.5
TiO2 <1.25 1.45 <2.5
MgO <0.75 <0.25 <0.3
Na2O 2.45 3.0 3.0
K2O <2.0 <0.75 <0.5
Cr2O3 <0.5 - -

Proset Dry Air Setting Cement (DASC) Technical Data

Property Proset 2 Proset 80
Product Class Dry Air-Setting Refractory Mortar Dry Air-Setting Refractory Mortar
Maximum Service Temperature 1600°C 1700°C
Quantity Required per 1000 squares 250 kgs 400 kgs
Water Addition % 20.0-24.0 -
Chemical Analysis (%)
Al2O3 28.75 77.25
SiO2 66.5 17.0
Cao <0.2 <0.2
Fe2O3 <1.3 <1.30
TiO2 <1.5 <3.5
MgO <0.25 <0.25
Na2O <1.5 <1.5
K2O <1.0 <0.75
Cr2O3 - -
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Typical Applications

Proset is used wherever durable refractory joints and high-temperature bonding performance are required.

  • Dense firebrick installation
  • Insulating firebrick installation
  • Ceramic fibre bonding
  • Body-soluble fibre bonding
  • Furnace lining construction
  • Kiln lining installation
  • Refractory maintenance and repairs
  • Crack and joint repairs
  • Foundry mould repairs
  • Refractory patching applications
  • High-temperature process equipment
  • General refractory construction

Typical Industries

Proset Refractory Mortar is widely specified across industries requiring reliable refractory installation and maintenance solutions.

  • Iron and steel production
  • Foundries
  • Aluminium processing
  • Glass manufacturing
  • Ceramics production
  • Heat treatment
  • Industrial furnace construction
  • Petrochemical processing
  • Power generation
  • OEM thermal equipment manufacturing
  • Thermal processing
  • General high-temperature industry

Technical Support and Specification Guidance

Selecting the correct refractory mortar is essential to achieving optimum joint strength, thermal performance and lining longevity. Factors such as service temperature, refractory type, joint dimensions and installation requirements should all be considered during specification.

Our technical team provides support across refractory lining design, brickwork installation and thermal process optimisation, helping ensure the most suitable mortar solution is specified for your application.

Need help specifying the right material?

Speak with our technical specialists to discuss refractory installation, brick bonding and high-temperature repair applications. We can assist with product selection, installation guidance and application-specific specification support.

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Proset Mortar