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Ask informed questions about bathroom waterproofing.

Organise your contractor questions, product information and handover documents in a practical planning checklist.

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Ask informed questions about bathroom waterproofing.: design illustration

Design illustration for planning inspiration.

Prepare your waterproofing discussion.

Use these prompts to organise the information you need from the people responsible for the work.

I'm not a licensed waterproofer or building certifier, so this checklist records your preparation only.

A qualified practitioner needs to assess and confirm the work itself.

1. Have you checked the contractor's licence and scope?

Match the name on the quote with the applicable licence details in the Service NSW register.

2. Is the waterproofing scope written down?

Ask which areas, junctions, penetrations, thresholds and drains the proposed work covers.

3. Has the applicator identified the product system?

Ask for the proposed membrane, primer and compatible components, with the manufacturer's instructions.

4. Have the underlying surfaces been assessed?

Ask the contractor what preparation, repairs and falls the selected system needs.

5. Is the trade sequence agreed?

Confirm how pipework, substrate work, waterproofing and tiling fit into the programme.

6. Are curing times included in the programme?

Ask the applicator to confirm the product-specific timing and site conditions needed before the next stage.

7. Are inspection responsibilities clear?

Confirm with the contractor and relevant certifier which checks, approvals and records apply to your project.

8. Have you agreed the handover documents?

Ask for the applicable certificates, product details, photographs, care information and warranty documents.

0 of 8 planning items ready.

Keep these points on your discussion list:

  • Have you checked the contractor's licence and scope?
  • Is the waterproofing scope written down?
  • Has the applicator identified the product system?
  • Have the underlying surfaces been assessed?
  • Is the trade sequence agreed?
  • Are curing times included in the programme?
  • Are inspection responsibilities clear?
  • Have you agreed the handover documents?

Your checklist answers stay in this browser view and reset when the page reloads.

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Using your result

Make this part of your planning brief.

Use each item to record whether you have the information ready or want to discuss it with the contractor.

The checklist records your preparation, with no installation approval or compliance score; it can't assess workmanship, membrane coverage or concealed surfaces.

Ask the qualified practitioner responsible for the work to confirm the applicable requirements, system instructions, inspections and handover records for your property.

Keep your written scope, relevant product documents and handover records together so they're easy to refer to during the project.

To understand how to scope the enquiry, read the bathroom waterproofing guide.

For the sequence around wet-area work, compare the indicative renovation timeline.

If you're investigating an existing concern, read the bathroom leak assessment guide.

Official guidance

Read the current licensing scope in the NSW Government waterproofing guidance.

Check the contractor's recorded licence details with the Service NSW licence register.

Questions about this tool.

Does completing the checklist certify the waterproofing?

No, completion records that your planning questions are ready; a qualified practitioner needs to assess and confirm the actual work.

Why aren't there fixed membrane dimensions or curing times here?

Those details depend on the applicable requirements, product system and site conditions; ask the responsible practitioner to confirm them for your project.

Who should answer the technical questions?

Start with the contractor and waterproofing applicator, and involve the relevant certifier or other qualified practitioner where the project requires one.

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