Silicate-Based Materials

Our silicate-based materials are recommended against all acids such as high concentration nitric, sulphuric & chromic acids. They are ideal for acid fumes, jointing acid resistant bricks, concreting and rendering, e.g., for chimney and sulphur pit applications.

Their maximum operating temperature can reach up to 900°C.

They are not recommended for Hydrofluoric Acid (HF) or fluorine containing acids/salts, any alkalis, steam, or freeze-thaw applications.

Potsil

Potsil is our recommended mortar product for the majority of acidic and high temperature applications. It is regularly used in sulphur pits and chimney applications.

  • Our Potsil range (also known as Norisil) is an inorganic silicate-based bedding and jointing mortar that has excellent resistance to both high temperatures and high concentrations of most corrosive substances.
  • Potsil has high resistance to all acids (except Hydrofluoric Acid) and is recommended for all applications with sulphuric and other strong oxidising acids.
  • Potsil also displays excellent resistance to organic materials such as solvents and oils if required.
  • Potsil is cost-effective and easily applied with trowels in a similar manner to traditional civil mortars.
  • Potsil is regularly used in Sulphur Pit/Chimneys for jointing of Acid resistant bricks to protect the substrate from corrosion and mechanical wear.
  • Potsil is not recommended for use in any external areas as it is susceptible to spalling due to a higher surface porosity or withstand long term exposure to hydrofluoric acids, concentrated bases, or crystallising salts.
  • Due to environmental concerns over halogens being released, we also offer a Halogen-free derivative, Potsil HF, which displays the same properties as our standard grade.

Silcrete

Silcrete is our recommended concrete product where masonry applications are not possible, or where a high build lining system is required in a reduced time frame. Silcrete is our recommended material for sulphur pit applications.

  • Our Silcrete range (also known as Noricrete) is a potassium silicate material designed for use as monolithic concretes, screeds and renders.
  • Our Silcrete range displays excellent chemical resistance to most acids (except hydrofluoric) and is recommended for all applications with sulphuric and other strong oxidising acids.
  • It provides a monolithic lining that is great as an alternative to traditional brick and mortar lining systems, offering easier installation in both manpower and time.
  • We offer 2 main grades:
    • Silcrete SG is a structural grade castable concrete for construction of floors, sumps, pits, trenches, plinths, and walls in areas exposed to strong acid materials.
    • Silcrete Gunning is applied using the ‘dry-gunite’ method such that reduced project downtime and labour costs can be achieved.
      • Silcrete Gunning is recommended for use in areas where brick/ tile or shuttering concrete areas are not appropriate. Examples include Molten Sulphur Pits, Chimneys, Stacks, Pits, Tanks and Ductwork.
    • Due to environmental concerns over halogens being released, we also offer Halogen-free derivatives, Silcrete HF, which display the same properties as our standard grades.

Furan

Furan is our recommended mortar product for applications that are exposed to elevated temperatures, both acid and alkaline environments, and where freeze/thaw environments occur. This has meant that they have been extensively used in effluent processing area and making them ideal for external trenches and storage bunds.

  • Our Furan Mortars (previously known as Norifur) provide protection against a broader range of corrosive substances in comparison to our Silicate-based mortars, when combined with Acid resistant bricks or tiles.
  • Furan has a low surface porosity so is suitable as a jointing mortar in external and internal areas with a freeze/thaw environment.
  • Our Furan mortars are suitable for conditions up to and around 180oC, and offer a combination of high temperature and chemical resistant properties,
  • We recommend our Furan range for protection against all non-oxidising acids, alkalis, salts, and solvents.
  • Furan comes in 3 standards grades based on weather conditions and ambient application temperature, such that it can be applied in all seasons and regions.
    • Furan S – Cooler Climates – (5–20oC)
    • Furan ST – Temperate Climates – (15-30oC)
    • Furan T – Tropical Climates – (20-40oC)
  • A carbon filled alternative – Furan C – is available for protection against Hydrofluoric Acid and other caustic chemicals, if required.

Sodasil

Sodasil is our recommended primer material where high temperature environments occur, and a joint sealant is required.

  • Our Sodasil product is a silicate-based primer/coating for concrete substrates in corrosive environments.
  • Sodasil is suitable as a primer for high operating temperatures; In particular for general tiling / masonry work and for trenches, pits and storage areas that are exposed to high temperatures (<900oC), where there is no insulation present.
  • Sodasil is not suitable if there is any risk of water ingress.
  • Sodasil is often employed as part of a caulking system in combination with ceramic rope to form high temperature joint sealants.
  • Sodasil can also be used as part of a membrane system in combination with ceramic paper to form high temperature sealant layers.
  • Easily applied with paint brushes or rollers or spray application.