Separate membrane installation from removal, substrate work, tiling, plumbing and the documentation applicable to your project.
Compare the same stage of work
A prepared shower ready for a specified membrane involves a different scope from an occupied bathroom requiring investigation and removal.
Describe the current condition before asking for a total price.
For an existing leak, ask what assessment is needed to determine the repair scope before comparing proposed methods.
What to itemise in a shower quote
| Item | Confirm in the written quote |
|---|---|
| Preparation | Access, removal, waste disposal and substrate repairs |
| Waterproofing | System, areas covered and installation scope |
| Other trades | Plumbing, tiling, screen removal and reinstatement |
| Scheduling | Drying or curing requirements and trade coordination |
| Documentation | Applicable inspections, certificates and product information |
| Price | GST, allowances, exclusions and variation process |
Membrane work and surface repairs
Ask the provider to describe exactly what the proposed work addresses and what remains outside the scope.
If a quote covers grout or sealant work, clarify whether it includes any assessment or replacement of the underlying waterproofing.
A clear written description makes it easier to compare recommendations that use different methods or cover different areas.
Confirm paperwork before the work starts
Ask your building certifier which inspections and certificates apply to the proposed work.
The Queensland forms have different purposes, so confirm the required document alongside the contractor's scope.
Keep the records with your quote, invoice and written warranty terms.
Send a useful shower project enquiry
Include the suburb, shower dimensions, current finishes and whether the bathroom is occupied during the proposed work.
Attach photographs if available, together with any assessment or plans.
Ask the provider to confirm the investigation, scope, price and timing before booking the work.
For a larger renovation, identify the builder or other trades coordinating the bathroom so responsibilities can be agreed.
Common questions
Does a waterproofing quote include new tiles?
Check the written scope, since tiling, screen work and plumbing may be priced separately.
Can a leaking shower be priced from its size alone?
The provider needs to understand its condition and proposed repair scope as well as the dimensions.
Is certification included in the price?
Ask which documents apply and who'll supply them, with any related fees clearly itemised.