Answer:
Expandify homes feature fully compliant internal waterproofing systems that meet Class 1a BCA standards. All wet areas are sealed and certified prior to delivery.

Waterproofing inclusions:

• Single-piece waterproof shower base — no tiled grout lines
• Watermark-certified plumbing fittings
• Form 43 Internal Waterproofing Certification
• Marble-finish composite wall lining — waterproof, low-maintenance
• Sealed concrete flooring layers — waterproofed under vinyl finish

The bathroom waterproofing system is designed for longevity, mould resistance, and fast cleaning — critical for rental and high-traffic dwellings.