BPIR

Everything a designer, builder or council needs to know about our factory-built ablution facilities - materials, Building Code compliance, installation and maintenance - in one place.

  • ProductCastle AblutionsToilet, bathroom & shower units
  • Manufactured inAotearoa New ZealandHenderson, Auckland
  • ManufacturerCastle Portable Buildings LtdNZBN 9429032604528
  • VersionBPIR v1.0Issued 27 October 2026
Castle Ablutions unit
Product description & intended use

A factory-built ablution facility, ready to drop on site

Castle Ablutions are fully fitted, factory-built toilet and shower facilities designed for rapid installation on prepared foundations or footings. Each unit leaves our Henderson factory complete and tested.

  • External walls: Bondor Xflam core insulated panels with steel skins
  • Base: Engineered steel frame
  • Fit-out: Sanitary fixtures, plumbing and electrical systems installed
  • Installation: Designed for rapid placement on prepared foundations
  • Configurations: Single, double, accessible or custom
Compliance

Relevant Building Code clauses

Castle Ablutions are designed and manufactured to contribute to compliance with the following clauses of the New Zealand Building Code.

How we demonstrate compliance
  • Structural engineering producer statement (PS1)
  • BRANZ appraisal for Bondor Xflam panels
  • Test reports for panel durability and insulation
  • Plumbing and electrical Certificates of Compliance for completed units (sample available)

Supporting documentation is available on request – contact our team.

B1

Structure

Steel frame engineered to AS/NZS 4600; Bondor panels designed to AS/NZS 1170 loads.

B2

Durability

Materials selected to meet the minimum 15 / 50 year durability requirements.

E2

External Moisture

Bondor panel joint system with sealants installed in accordance with E2/AS1.

F2

Hazardous Building Materials

Non-toxic construction. No asbestos.

G1

Personal Hygiene

Fully compliant sanitary fixture layout.

G12

Water Supplies

Pipework and fixtures comply with G12/AS1.

G13

Foul Water

Waste connections comply with G13/AS1.

Use it the right way

Limitations & design requirements

Limitations on use

  • Must be installed on suitable load-bearing foundations or supports.
  • Electrical and plumbing connections must be completed by licensed practitioners.
  • Not intended for permanent use without meeting local authority consent requirements.

Design requirements

  • Not designed for high wind zones unless specifically engineered for the site.
  • Seismic design category to be confirmed for the intended location.
  • Site-specific engineering available on request for non-standard conditions.
On site & over time

Installation & maintenance

Simple, repeatable steps that keep every Castle Ablutions unit weathertight, compliant and in service for years.

Installation requirements

  1. Offload the unit using the certified lifting points.
  2. Position and level the unit on the prepared foundation or supports.
  3. Connect plumbing (supply and waste) as per NZ Building Code G12 / G13.
  4. Connect the electrical system as per AS/NZS 3000.
  5. Seal all service penetrations to maintain weathertightness.
  6. Test all systems before handover.

Maintenance requirements

  1. Clean external surfaces every 6-2 months (mild detergent, soft brush).
  2. Inspect and reseal joints every 5 years, or as required.
  3. Check roofing and panel fasteners for tightness annually.
  4. Service plumbing fixtures annually, or as needed.
  5. Follow the manufacturer’s instructions for all fixtures and fittings.

Manufacturer details

Legal & trading name
Castle Portable Buildings Limited
NZBN
9429032604528
Place of manufacture
Aotearoa New Zealand
Address for service
85b Henderson Valley Road, Henderson, Auckland 0610, New Zealand
Website
www.castleportablebuildings.co.nz
Importer
Not applicable – manufactured in New Zealand

Declaration

No warning or ban

This building product / product line is not subject to a warning or ban under section 26 of the Building Act.

Document
Class 2 Building Product Information Sheet
Version
BPIR v1.0 – May 26
Date
27 / 10 / 2026

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