Wet area waterproofing subcontractor

Waterproof bathrooms, laundries and balconies for builders, renovators and tilers on new builds and renovations.

Startup costA$3k to A$15k
Monthly revenueA$4k to A$16k
Time needed25+ h/week
First incomeWeeks
  • A$3k-15k
  • Part-time
  • Out and about
  • Licence or permit needed

Estimates for a small start in Australia, not guarantees.

What it is

Applying waterproofing membranes to bathroom floors and walls, laundries, balconies and planter boxes before tiling, following the relevant Australian Standards and manufacturer instructions.

Your first three steps

  1. Check your state's licensing body (for example QBCC, NSW Fair Trading or VBA) for the waterproofing licence or registration you need and any required training
  2. Get public liability insurance, an ABN and a starter kit of tools and membrane products from a trade supplier
  3. Introduce yourself to local builders, tilers and renovators and offer to quote on their next job
Who pays

Builders, renovators, tilers and project managers who need certified waterproofing done on their jobs, plus some homeowners directly.

How it makes money

Fixed price per room or per square metre, with extra for balconies, hobless showers and difficult details. Repeat work from a few reliable builders keeps your diary full.

Skills that help
  • Careful, neat manual work
  • Reading plans and following standards
  • Reliable scheduling with builders and tilers
Watch out for
  • Waterproofing is a licensed or regulated trade in many states, so check what applies where you work before quoting
  • Public liability insurance, and check whether home warranty or statutory warranty insurance rules apply to your jobs
  • Failures can cause costly water damage and long warranty claims, so document each job with photos and records
  • Physical work in tight, hot spaces, and fumes from some products, so check safety and ventilation requirements

Deep research report · Australia

Everything you need to start: wet area waterproofing subcontractor

Researched with live web search for Australia: real startup prices, the licences and rules, what others charge, a break-even example, how to find your first customers and a 30-day launch plan. With sources.

  • Startup costs with real prices
  • Licences, registration and rules
  • Pricing: what others charge
  • Break-even example
  • Finding your first customers
  • 30-day launch plan
  • Risks and how to reduce them
Ready in about 2 minutes · one-off payment, tax included

See a full sample report

Questions people ask

How much does it cost to start a wet area waterproofing business in Australia?

Startup costs are estimates, typically around $3,000 to $15,000, depending on your equipment, materials and how you set up. Get your own quotes for tools, products and insurance before you commit.

How much can a wet area waterproofing subcontractor earn?

Monthly revenue is an estimate, typically around $4,000 to $16,000, depending on how many jobs you win and how many hours you work. The estimate assumes at least about 25 hours a week.

Do I need a licence to waterproof bathrooms and balconies in Australia?

Waterproofing is a licensed or regulated trade in many states, so check what applies where you work before quoting. Also check public liability insurance and whether home warranty or statutory warranty insurance rules apply to your jobs.

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