About the CPC31420 – Certificate III in Construction Waterproofing

This qualification is the industry standard for skilled waterproofers working in residential, commercial and industrial construction across Australia.

It covers key areas like:

• Reading and interpreting waterproofing plans and specifications
• Preparing and sealing surfaces to prevent water penetration
• Installing membranes and applying waterproofing systems to wet areas, roofs, decks and below-ground structures
• Using specialist waterproofing tools, materials and equipment safely and effectively
• Repairing and maintaining existing waterproofing systems
• Applying workplace health and safety practices and meeting Australian Standards for compliance

Why it matters:

This certificate is a licensing requirement in most states and can open doors to higher-paying roles, site supervision and business ownership.

Already experienced?

If you’re already working in the trade, you may be eligible to complete this qualification through Recognition of Prior Learning (RPL). No need to sit a course — just prove what you know.