What Does a Refractory Mason Do?

A Refractory Mason (401R) is a person who restores or replaces linings of furnaces, kilns and basins by installing refractory bricks, blankets, modules, castables, plastics or ceramic coatings to protect structures from high heat. This is a specialty trade.

Additional information on training standards for this particular trade in the Construction sector can be found on the Ontario College of Trades(OCOT)  website at: www.collegeoftrades.ca/trades/training-standards1/construction.

Job Related Skills, Interests and Values

  • adapting the job site environment
  • using and maintaining refractory tools and equipment
  • tearing out refractory masonry
  • laying refractory bricks
  • installing poured castables
  • installing gunnable castables,shotcrete, and lining with ceramic welding
  • installing refractory material by plastic ramming

What Preparation and Training Do You Need?

The minimum qualification for entry into this trade is the Certificate of Qualification in Brick and Stone Mason (401A).

Industry today has a need for masons with competence in installing refractory materials for converters, hot gas generators, furnace and converter relines and repairs and other refractory requirements. Based on industry demand and their recommendations, you should preferably have a secondary school diploma this is usually required by employers and unions today, but grade 10 is currently the legal minimum to be apprenticed in this trade under the Ontario College of Trades Apprenticeship Act (2009). Please note that minimum entry requirements to this and other trades are currently under review by the Ontario College of Trades. Completion of a apx 4,300 hour apprenticeship will include a combination of on-the-job and in-school training, before successfully writing an examination to obtain your CertificateThis new trade is currently not eligible for the Apprenticeship Training Tax Credit. NOC code 7281 applies to this trade.


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