• Audit Title

  • Document No.

  • Client / Site

  • Location
  • Applicant


  • Lot/DP:

  • Owner:

  • Description of Development:



  • Date of Issue:


  • Internal Sewer

  • Footings

  • Floor slab

  • Internal Water

  • External Sewer

  • Frame / Brickwork / Internal Water Services


  • Restricted access

  • Builder's sign

  • Sediment and erosion controls

  • Rubbish control

  • Builder's toilet

  • Protection of public space by fencing or hoarding

  • Protection and support of adjoining buildings

  • Please note these matters need to be in place during the construction period



  • Name

  • On site / Contacted

  • Company

  • Qualifications (Plumber/Builder/Wet Area Qualifications):


  • Cement Render Wall

  • Sheeted Walls

  • Type:

  • Solid Brick

  • Timber Frame

  • Steel Frame

  • Concrete Slab floor

  • Steel frame floor

  • Timber frame floor

  • Sheet floor

  • Type:


  • Rigid e.g. Metal Trays / Fibreglass etc

  • Notes:

  • Flexible e.g. Acrylic Membrane / Liquid

  • Type:

  • (Include Brand Names and Certification if any)

  • Check floor plan with approval

  • All tap penetrations sealed

  • Is Membrane continuous

  • No air bubbles, holes, cracks

  • Are all required areas covered

  • Are Cement render walls complete / flat / even

  • Junction to wall and floor square

  • Recess in wall to allow for insertion or bath rim

  • Concrete floor - has it cured for 28 days

  • Any movement joints in concrete

  • Any cracks > 1mm to be filled

  • Floor sheets square to wall, parallel

  • Concrete substrate smooth and clean / moisture level below 15%

  • Required fall to floor waste

  • Step down areas trimmed / square

  • Is level of Water Stop (Assume 40mm angle) ok with FFL of adjacent room

  • Smooth transition between floor waste and substrate

  • Can Plumber connect bath without damage to waterproofing

  • Notified all trades not to walk on tile membrane / signage

  • Slots in floor waste grates to allow drainage of tile bed

  • Fillets / Backing rods installed to corners, min 8mm vertical, 10-12mm horizontal joins, min 24 hours, max 72 hours after primer application

  • Ensure wall tiles overlap bath rim / min 25mm trim to underside of bath

  • No butt joints lipped

  • Enough fixings used (450mm centres)

  • Fixings countersunk / flush with floor surface

  • No large gaps between wall / floor

  • Ceiling installed / sanded / level

  • Architraves & door jambs cut so they don't penetrate tile bed

  • Will 40mm Water Stop provide fall of not less than 1 in 100 to drainage outlet

  • Will 40mm Water Stop not compromise nominal tile bed thickness of 20mm min thickness for bonded waterproofing systems

  • Will 40mm Water Stop not compromise nominal tile bed thickness of 30mm min thickness for unbounded waterproofing system (AS 3598.1)

  • For Hobless shower, will 50mm Water Stop at shower screen enclosure enable water stop to protrude 10mm above FF tile level

  • Will 1 in 60 fall in floor tiles in shower not compromise the nominal tile bed thickness of 20mm min for bonded waterproofing systems, or 30mm min for unbonded waterproofing systems

  • Electrical Services installed - Wiring to ceiling lights, GPO above vanity

  • Floor waste / Drainage outlets installed

  • Pipework secure

  • Wall tiling using manufacture approved, Membrane compatible adhesive

  • Membrane extended 35mm out from int. and ext. corners

  • Sand spreads over membrane for Tile adhesion

  • Laundries & W.Cs full Floor Waterproofed to 50mm above fin. tile level, across door opening to fin. tile level height

  • Wall behind vanity splashback / wall hung basin to 150mm above, except where 100mm splashback on cabinet

  • Wet area sheet - Certificate of Installation to be supplied

  • Comments:


  • Result

  • Building Surveyor

  • Conducted on

  • Signature

  • Accreditation Number

  • Compliance Certificate Issued


    - AS3740 - Wet area Waterproofing>BCA Housing Provisions 2010
    MBA - Guide to Internal Wet Area Waterproofing

    - Plans

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