StoPoren Facade Specified for Farmers Rangiora

Farmers Rangiora was closed off to the public and subsequently demolished in 2014, after sustaining critical damage from the 2011 Canterbury quakes.

The new 6,500m² Farmers Rangiora, designed by Ignite Architects and constructed by Watts & Hughes, provides an innovative building design for the retail brand while maintaining the local streetscape character and adding a revived sense of vibrancy to the town’s centre.

Ignite Architects specified Sto, incorporating the StoPoren Panel Facade System with over 900m² of exterior facade construction that was juxtaposed with dark metal cladding to break down the building's scale. Additionally 600m² of S-Protect Anti Graffiti Coating System was applied across exterior pedestrian levels.

Installed and rendered by Advanced Exterior Plastering, the StoPoren Panel Facade System is made up of 2200 x 600 x 50mm Autoclaved Aerated Concrete (AAC) panels, reinforced with ductile steel. The panels fix horizontally in a brick-like pattern, creating an economical, solid yet lightweight facade over timber or steel frame.

Also scoped were areas of 100mm thick panel; which allowed for the negative offset in the facade design.

StoPoren is a versatile building material for commercial builds thanks to it light weight, ventilated cavity design, non-combustibility and thermal and acoustic properties. The panel is not only easy to work with, but is also quick to install, lowering construction times.

The StoPoren is reinforced with a StoArmat Render System incorporating a Stolit K 1.0mm finishing render to provide maximum system longevity, security and weather resistance. This futureproofs the build with a sustainable and reliable facade, combating urban mechanical stresses and also seismic movement.

Another innovative Sto product used on Farmers Rangiora was the S-Protect Anti Graffiti Coating System, which was applied 3.0m in height across all rendered and precast panel areas. This clear coating system consists of a clear matt, water-based, two pack reactive formula that provides a hard, durable barrier that can be easily cleaned using S-Protect Sensitive or Hi Strength cleaners to remove unwanted graffiti attacks.

Farmers Rangiora is a great example of planning, communication and performance that reflects on the Sto principles of “building with conscience”. It’s great to see Farmers back in Rangiora once again.

Project: Farmers Rangiora
Architect: Ignite Architects
Construction: Watts & Hughes Construction
Sto Contractor: Advanced Exterior Plastering
Photos: Stephen Goodenough

Sto Clear Coatings for Masonry Substrates

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Minimalist architecture using exterior concrete and raw masonry requires coatings and treatments to protect and waterproof these natural substrates that can vary from high MPa precast concrete to low density pumice blocks.

StoClear Coating Systems:

StoProtect Clear Coating System for Concrete Block
S-Protect Silane Protection for Concrete Block & Brick Veneer
S-Protect Silane Protection for Precast, In situ Concrete
StoPur WV200 Transparent System for Precast Concrete
S-Protect Anti Graffiti Coating System

The S-Protect range is based on high concentrate Silane technology that has been trialled and tested on numerous iconic buildings, including The Sydney Opera House 1991, The Louvre Museum 2003, The Hang Zhou Bridge 2008, Novotel Airport Hotel 2011 and Parliamentary Library 2012.

StoArmour Facade Panel System

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Autoclaved Aerated Concrete (AAC) has evolved into an innovative lightweight concrete building material used worldwide in various construction systems. StoArmour Facade Panel embodies the latest in AAC technology with corrosion-resistant ductile steel reinforcing, delivering a durable facade panel from a dependable supplier.

The StoArmour Facade Panel Cladding System has been appraised as an external wall cladding system for buildings within the following scope:

For residential and light commercial type buildings where domestic construction techniques are used.
The scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1
Constructed with timber or steel framing complying with the NZBC.
With a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1, Table 2

The StoArmour Facade Panel System has also been appraised for weathertightness and structural wind loading within the following scope;

The scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1
Constructed with timber and steel framing complying with the NZBC
Including wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa

StoArmour Panel is suitable for both residential and commercial buildings. For use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills.

The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:

Clause B1 Structure: Performance B1.3.1, B1.3.2, B1.3.3, B1.3.4
Clause B2 Durability: Performance B2.3.1(b), B2.3.1(c), B2.3.2
Clause E2 External moisture: Performance E2.3.2
Clause F2 Hazardous building materials: Performance F2.3.1

Note: The StoArmour Facade Panel System meets the performance requirements of NZBC Clause B2.3.1 (b), 15 years for the cladding system and plaster finish, and the performance requirements of NZBC Clause B2.3.1 (c), 5 years for the exterior paint system.

The StoArmour Facade Panel System is expected to have a serviceable life of at least 30 years provided the system is maintained in accordance with this Appraisal, and the StoArmour panels, fixings and plaster are continuously protected by a weathertight coating and remain dry in service.

BRANZ Appraised

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