Wet Areas

Definitions BCA Part 3.8.1Wet Area – an are within a building, supplied with water from a water supply

Includes bathrooms, showers, laundries and sanitary compartments.Does Not Include Kitchens, bar area, kitchenettes or domestic food

preparation areas

Water Resistant – means the property of a system or material that restricts moisture movement and will not degrade under conditions of moisture.

Waterproof System – Combination of elements that are required to achieve a waterproof barrier, may include membrane, substrate, bond breakers, sealants etc

Risk Potential For Wet AreasAS 3740

• High Risk – Shower Recesses

• Medium Risk – Rest of Bathroom & Laundry

• Low Risk – WC Room & immediate area around a kitchen sink, bar or similar

AS 3740 – High Risk

• Means high probability of damage to structure if water within high risk area is not contained and discharged to drainage outlet.

BCA Requirements High Risk Area

BCA Requirements High Risk Area

AS 3740 – Medium Risk

• Accidental spillage must be contained to with in the room.

• It is imperative that water not be allowed to pass into concealed spaces or to adjoining rooms

• Drainage not neccessary

BCA Requirements Medium Risk Area

BCA Requirements Medium Risk Area

AS 3740 – Low Risk

• Risk of accidental spillage is low requirement to stop water traversing to adjoining rooms

BCA Requirements Low Risk

High Risk Area

High Risk Area

Preformed Shower Bases

Preformed Shower Bases• Must be fully supported• Recessed Into Walls

Preformed Shower Bases

Bath Installation

Bath Installation

Definition

• Hob – Upstand at the perimeter to a shower area

Hob Requirements BCA

Hob Construction Detail (Internal)

Hob Construction Detail (External)