Technical Statement
Scope of use
The StoArmat Render System has been appraised for use as a jointing and
exterior render system for Monotek® Sheet on buildings within the following
scope:
- the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; and,
- with a risk score of 0-20, calculated in accordance with NZBC Acceptable
Solution E2/AS1, Table 2; and,
- situated in NZS 3604 Wind Zones up to, and including Extra High.
The StoArmat Render System has also been appraised for use as a jointing
and exterior render system for Monotek® Sheet on buildings subject to specific
design up to an ultimate limit state (ULS) wind pressure of 2.5 kPa; and,
- constructed with timber framing subject to specific engineering design;
and,
-
within the scope limitations of BRANZ Appraisal No. 466 (2005) Monotek®
Sheet - Cavity Construction.
Monotek® Sheet must be used, designed and
installed as described in BRANZ Appraisal No. 466 (2005) and the Monotek® Sheet
Technical Literature.
New Zealand Building Code (NZBC)
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 B2 Durability: Performance B2.3.1(b), B2.3.1(c)
- Clause C3 Fire affecting areas beyond the fire source: Performance C3.7
- Clause E2 External moisture: Performance E2.3.2
- Clause F2 Hazardous building materials: Performance F2.3.1
Notes
TheStoArmat Render System meets the requirements of Performance
B2.3.1(b) 15 years for the render and jointing system, and the requirements
of Performance B2.3.1(c) 5 years for the paint finish.
The StoArmat Render System will not
present a health hazard to people.
Supporting evidence
The product has and can make available the following additional evidence to support the above statements:
Product Criteria
Design requirements
The StoArmat Render System is expected to have a serviceable life of at
least 15 years provided the system is maintained in accordance with the Sto
Specification, Warranty and BRANZ Appraisal, and the renders are continuously
protected by a weathertight coating and remain dry in service.
Monotek® Sheet must be detailed and installed in accordance with BRANZ
Appraisal No. 466 (2005) and the James Hardie Monotek® Sheet Technical Literature.
The StoArmat Render System has a peak heat release rate less than 100
kW/m2 and a total heat released less than 25 MJ/m2. The
system is suitable for use on buildings with a SH Risk Group classification, at
any distance to the relevant boundary. Refer to NZBC Acceptable Solutions C/AS2
– C/AS6, Paragraph 5.8.1 for the specific exterior surface finishes
requirements for other building Risk Groups.
For a breakdown of the system components, Click Here.
Installation requirements
Monotek® Sheet must be used, designed and installed as
described in BRANZ Appraisal No. 466 (2005) and the James Hardie Monotek® Sheet Technical Literature.
Installation and finishing of components and accessories supplied by
Stoanz Limited and the Sto registered contractor must be completed by trained
applicators, approved by Stoanz Limited.
Installation of the
accessories supplied by the building contractor must be carried out in
accordance with the StoArmat Render System Technical Literature and the BRANZ Appraisal by, or
under the supervision of a Licensed Building Practitioner (LBP) with the
relevant Licence Class.
Maintenance requirements
Regular maintenance is essential to ensure the performance requirements
of the NZBC are continually met and to ensure the maximum serviceability of the
system. Carry out an annual inspection and record this on the Sto
Construction Systems Maintenance schedule.
Regular cleaning
(at least annually) of the paint coating is required to remove grime, dirt and
organic growth and to maximise the life and appearance of the coating. Grime
may be removed by brushing with a soft brush, warm water and
detergent. The paint system must be recoated at approximately 8-10 yearly
intervals in accordance with Stoanz Limited instructions. Clear sealer systems
require recoating at 5-7 yearly intervals.
Warrantees
With an increasing emphasis on the implementation of servicing exterior
building elements, Sto has launched the StoArmat 20 Year Warranty and
StoService Assurance documentation. This system, administered by Sto and
carried out by Sto Contractors, ensures all specified StoArmat Rendered Systems
are registered, serviced and certified every two and a half years to provide
assurance that all building elements pertaining to the rendered facade are
performing.
Refer to the StoArmat Warranty Document by clicking here.
Environmental
Protecting the natural basis for life and improving
quality of life are important aims in social policy. Sto actively
pursues these aims, always acting in accordance with the company's
guiding principle: "Building with conscience."
In order to define and implement its ecological targets, Sto has
developed a system of environmental management conforming to
international standards. This relates to the entire process chain – from
the procurement of the raw product, to production, packaging and
logistics.
Quality Assurance
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ISO 9001 (Quality Management) |
