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PRODUCER/DURABILITY STATEMENT

SRP™ STUD/TRACK/NOG Sections and Associated Componentry

A Producer Statement gives evidence that a design or building work complies, or will comply, with the NZ Building Code and helps Council(s) to make a decision to issue a Building Consent or Code of Compliance Certificate (CCC).

Seismic bracing of non-structural building elements is required under the NZ Building Act, and by Worksafe, with the loading requirements for these covered in NZS1170, section 5.8.

Councils are now generally asking for PS1s for Suspended Ceiling Systems, however not required for Direct-Fix Ceiling batten systems.

A PS-1 Seismic ceiling design is site-specific, is a requirement by NZBC for all buildings with Importance Levels IL2 to IL4.

Seismic ceiling design needs to be carried out by a suitably qualified Engineer, who can provide a PS1.

Should you require any advice on selecting an Engineer familiar with SRP Products/ Systems, please contact an SRP Sales Representative.

Download PRODUCER STATEMENTS

 

SRP™ Whisperwall™  - Fire TS Lab

Steel Rollformed Products Limited Test Certificate

The full-scale specimen consisted of a SRP Whisperwall 92mm steel stud frame at 600 centres and one layer of 13mm GIB Braceline/Noiseline on fire side and two layers of GIB Braceline/Noiseline plasterboard (13mm Cavity side and 10mm laboratory side) on non-fire side with 90mm R2.2 Pink Batt glass wool insulation installed in the cavity.

Download Certificate

Substitution SRP™ Wall Products

SRP™ STUD/TRACK/NOG Sections and Associated Componentry

SRP™ Wall configurations as shown in TABLE 2 using 64mm and 92mm SRP™ Studs and associated componentry manufactured by Steel Rollformed Products™ Ltd are designed not to compromise the structural integrity*, acoustic or fire rating performance, if installed in accordance with non-load bearing GIB® Performance Systems called up in GIB® Fire Rated Systems for FRR walls and GIB® Noise Control Systems for STC walls and SRP™ Product Catalogue for all SRP™ walls. Specification references include:

GIB® Fire Rated Systems:

» GBS30, GBS60, GBS90, GBS120a – single Stud frame walls
» GBS240 – double Stud frame wall, with inside Stud flanges, in the middle gap lined with GIB. as well.

GIB® Noise Control Systems:

» GBSA30b, GBSA45, GBSA60c, GBSA90c, GBSA90d – double Stud frame walls
» GBSA30s, GBSA90s – staggered Stud frame wall
» GBSA30r, GBSA60r, GBSA90r – single Stud frame walls

[Refer to the letter of endorsement from Winstone Wallboards dated 23rd August 2015]

In addition to this, SRP™ Whisperwall™ Acoustic SRP™ Stud has been confirmed as an acceptable substitution in GBS 60 from GIB® Fire Rated Systems. Winstone Wallboards, in their letter dated 11th June 2014, confirm the -/60/60 FRR Fire Resistance Rating for SRP™ Whisperwall™ provided that the inner layer of 13mm GIB Noiseline® is fastened to the SRP™ Whisperwall™ Acoustic SRP™ Studs in accordance with the SRP™ Product Catalogue and GBS 60 from GIB® Fire Rated Systems specification. In cases, where an additional layer of 10mm GIB Noiseline® is used, the FRR will be maintained and the inner layer of 13mm GIB Noiseline® does not require plaster stopping.

*Project Design Engineer to ensure project-specific design considers all applied loads on the structure including those imposed by SRP™ products.

Download SRP™ Steel Stud Wall Structure Diagrams

Why SRP Stands for Quality and Compliance


At Steel Rollformed Products, we are committed to providing high-quality steel stud and metal concealed ceiling systems that not only meet but exceed industry standards. We understand the pressures the building and construction industry faces today – especially when international competitors with lower price points flood the market.

However, chasing the lowest price in the construction industry could put the future of your project at risk. While cheap alternatives may seem attractive on the surface, they come with serious drawbacks that could compromise the integrity of your building.

The suitability of galvanised steel for wall and ceiling components is determined by three key factors:

  1. Grade of Steel: Measured at the yield point, a minimum of 250 MPa is required. While the squeeze test gives a rough estimate, accurate testing is needed for precise confirmation.
  2. Gauge: Galvanised steel with a 0.55mm specification typically measures closer to 0.575–0.585mm. The base metal is rolled to order, but the galvanising process may vary slightly.
  3. Galvanising Coating: The building code specifies a Z275 coating, with a minimum of 20 microns on each side of the strip. However, many Asian mills produce to a lower Z120 standard, which does not meet the required NZ/AUST building code.


All three factors must match or exceed the NZ/AUST standards to ensure compliance and safety.

Why Compromising on Standards is a Risk

We've conducted testing on products from international suppliers and discovered significant discrepancies in their Base Metal Thickness (BMT). These products often fail to meet AS/NZS 4600, the standard for cold-formed steel structures, which means they aren't compliant and could lead to structural failures down the line. In a market where safety and compliance are paramount, this is a risk no one should take.

At SRP, we go above and beyond to ensure our products meet stringent AS/NZS 4600 cold-formed steel structures standards and other industry codes, including:

  • Galvanised Coating Z275 to AS/NZS 1397
  • NZS 3404 – Steel Structures Standard
  • NZS 3404.1 – Steel Structure Standard – Materials, Fabrication, and Construction
  • AS/NZS 1170 – Structural Design Actions
  • NZBC – B1/VM1 and B2 – Compliance with the New Zealand Building Code


Our products provide you with confidence that your steel stud and ceiling systems are built to last. Our business is here to provide a solution you can trust – one that doesn't cut corners and ensures compliance with every project.

Why Choose Steel Rollformed Products

  • Quality Assurance – Our products are rigorously tested to ensure they meet the highest standards of performance and compliance.
  • Industry Compliance – We comply with the AS/NZS 4600 and other essential codes, ensuring the integrity of your construction project.
  • Locally Operated – As a local supplier, we understand the unique demands of the New Zealand construction industry.
  • Cost-Effective – We offer competitive pricing without compromising on quality.

 
When you choose SRP, you're not just choosing a supplier; you're choosing a partner who values compliance, quality, and the safety of every project. Don’t settle for less. Protect your construction projects and build with integrity.

Reach out to us today to learn more about how we can help your next project succeed.

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