More Than Just a Tagline, Sto’s Mission, “Building with Conscience.”

Sustainability is becoming an increasingly important topic for building owners, specifiers and applicators alike. So, it's reassuring to know that Sto's products have long been meeting this demand — with sustainable systems ranging from globally successful facade insulation, through to active facade renders and coatings, and healthy interiors and acoustic systems.

The Sto “Sustainability Compass” is the basis of Sto's sustainability strategy and encompasses four areas: well-being, ecology, economy, and society.

Well-being

Sto products are designed to contribute to the overall sustainability of a project, providing benefits including: protection and extended life cycle of building facades; reduction of maintenance requirements; health and well-being, as well as being free of solvents, plasticisers and extremely low on emissions. Moreover, many of Sto's products are certified to accredited standards and include performance declarations such as Environmental Product Declarations (EPDs) and in-house Sustainability Data Sheets (SDS).

Ecology

Sto's core business is the manufacture of facade systems that ensure long term durability and energy efficiency, helping to reduce consumption of fossil fuels and carbon emissions. In particular, Sto energy-efficient facade systems have made a significant contribution to environmental protection by reducing air pollution and improving the global climate. In fact, since 1965, the use of Sto facade insulation systems has resulted in a reduction of carbon dioxide emissions by a total of 247 million tons.

Economy

Sto has positioned itself in the building coatings market as a supplier of quality products and systems with a high degree of technological expertise and services. Sto incorporates sustainable practices throughout its state-of-the-art production facilities, earning ISO 9001 certification for its quality management system and ISO 14001 certification for its environmental management system. These certifications relate to the entire process chain, from the procurement of the raw and recycled materials, to production, packaging and logistics.

Society

Commitment to social issues forms part of a long-standing tradition at Sto. Sto assume responsibility for their employees as well as the places they work in and the people they work with. Sto New Zealand supports many employees as they commit themselves to social projects outside of work, plus Sto is also committed to supporting organisations through sponsorship.

Sto’s sustainability credentials

EN ISO 14001:2015 certification for their environmental management system.
The first manufacturer to reduce the level of VOC’s from all water-based coatings long before any regulatory requirement.
Sto has attained Environmental Product Declarations (EPDs) for all of its essential render products.
Sto products contain up to 96% recycled materials.
Removal of an estimated 247 million tons of CO2 from the environment since 1965.

Sustainability data sheets (SDS)

Sto offers a voluntary product declaration to help meet the growing demand for life cycle, environmental and health information, including any certifications. Sto Sustainability Data Sheets are being continuously issued and updated.

View Sto's Sustainability Data Sheets (SDS)

StoTherm Masonry Insulation

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StoTherm external wall insulations systems conserve energy by wrapping the building in a thermally-resistant envelope, reducing energy bills and CO2 emissions.

The StoTherm Masonry Insulation System has been appraised as an exterior insulating and finishing system for buildings within the following scope:

With Substrates of concrete masonry, in-situ or pre-cast concrete, up to 3 storeys, with a maximum height from ground to eaves of 10m
Supporting structures designed and constructed in accordance with the NZBC
Situated in NZS 3604 Building Wind Zones up to, and including 'Very High'

Bond/fixing, durability and weather tightness of the exterior insulating and finishing system for concrete masonry, in-situ or pre-cast concrete buildings subject to specific design up to a differential design ultimate limit state (ULS) wind pressure of 2.5 kPa.

StoTherm Armat is suitable for both residential and commercial building

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)
Clause E2 External moisture: Performance E2.3.2
Clause F2 Hazardous building materials: Performance F2.3.1
Clause H1 Energy efficiency: Performance H1.3.1

Notes: The StoTherm Masonry Insulation System meets the performance requirements of NZBC Clause B2.3.1 (b), 15 years for the plaster system, and the performance requirements of NZBC Clause B2.3.1 (c), 5 years for the exterior paint system.

The StoTherm Masonry Insulation System is expected to have a serviceable life of at least 30 years provided it is maintained in accordance with the Appraisal, the StoTherm Panels, fixings and plasters are continuously protected by a weathertight paint system and remain dry in service and the NZBC external moisture and internal moisture provisions are met.

BRANZ Appraised

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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