Belowground Waterproofing and Producer Statement Certificate
A Producer Statement or PS is a formal certification that indicates the building work, design or specifications provided meets the technical requirements set by the New Zealand Building Code or conditions of a building consent.
Producer statements are signed by a recognised specialist (usually an engineer or architect) working within their scope of expertise and competency. The specialist must ensure that the PS issued is complete and accurate and that they have met the requirements of their industry code of practice.
THERE ARE FOUR TYPES OF PRODUCER STATEMENTS:
– PS 1 – DESIGN
The design professional who has been involved in the design stages should complete this statement. The information should include:
- The specific site and/or building description and date the design work was completed.
- Where the producer statement is intended to apply to part and not all of the building work that should be clearly stated and the scope specified.
- Construction monitoring levels (if applicable).
– PS 2 – DESIGN REVIEW
The design professional who has been engaged to provide a design review should complete this statement.
– PS 3 – CONSTRUCTION
Often used by the installers of proprietary systems. The person who has undertaken the building work or installation completes this statement.
– PS 4 – CONSTRUCTION REVIEW
The design professional, who has reviewed the work of the contractor, issues a PS4 to confirm that the building work has been carried out in accordance with the consented plans and the building code.
- A PS4 should record the level of Construction Monitoring/Observation carried out by the Chartered Professional Engineer (or by persons acting under their control).
- A PS4 should be accompanied by records of the construction monitoring undertaken to support the opinion of compliance.
Despite its critical importance, belowground tanking is currently not governed by any code of practice or NZ standard and it is not a restricted building activity. Belowground waterproofing specified projects are often asked by Building Consent Authorities (BCA’s) to have a PS1 submitted as part of a consent package.
Allco is often asked if we can produce a PS1 for a project where our Volclay Waterproofing System has been specified and although we offer to assess and make recommendations of how our Volclay System would be applied to the project structure, Allco doesn’t design the system and we are not accredited to complete a Producer Statements. This is more commonly the realm of an engineer or project architect.
Our Allco Approved Applicators are usually LBP licensed and will provide a PS3 for their installation and supply that to the construction team as part of the code compliance when required.
In some instances, Allco can produce an assessment letter for the project stating we have assessed the architectural details supplied and that they conform with the BRANZ appraised methodology of our Volclay System and its compliance with NZBC B2/E2/F2 and in many cases, this letter is sufficient to inform and appease the BCA’s request for and Producer Statement.
If you have any questions regarding our membranes, choosing the right waterproofing for your project or if you require assistance with design, specification and compliance, please get in touch today on (09) 448 1185 or email firstname.lastname@example.org