StoTherm for Timber / Steel Frame by Sto

StoTherm for Timber / Steel Frame

Sto

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Description

StoTherm Armat Insulation System and StoTherm Vario Insulation Systems are cavity-based Exterior Insulation and Finishing System (EIFS) wall claddings, incorporating a drainage cavity between the interior and exterior claddings. Both Systems Consisting of 40 to 100mm and over thick EPS StoTherm Panels or StoTherm+ Panels which increase R-values by up to a further 20% for better energy efficiency. The system has been designed with minimal thermal conductivity and thermal bridging.

Installations are carried out by a Sto Registered Licensed Building Practitioner with the added protection of a StoArmat 15 or 20+ Year Warranty and StoService Assurance, guaranteeing building code compliant materials are used and application meets building code standards, including a service plan for long-term security.

StoTherm Vario System:

Consists of EPS StoTherm Panels fixed with fitting bonds over cavity battens. Level-Uni, a European manufactured white mineral plaster with good adhesion properties is applied with Sto mesh. The façade is then finished with the perfect interlocking components: StoLit finishing render plus a StoCoating of choice.

StoTherm Armat System:

Consists of EPS StoTherm Insulation Panels fixed with fitting bonds over cavity battens. The panels are base-coated and levelled to provide a thick solid plaster base for additional reinforcement, StoArmat plaster plus StoMesh. StoArmat is cement-free, ready-to-use, high elasticity plaster, providing maximum crack and shock resistance. While the Glass fibre mesh is an alkali-resistant reinforcing mesh with absolutely uniform force absorption and reliably dissipates tensile and shear stress. The façade is then finished with the perfect interlocking components: StoLit finishing render plus a StoCoating of choice.

Key Features

BRANZ Appraised
15 to 20 year warranty with maintenance schedule
Complete installation and supply by Sto registered LBP contractor
Easy to cut, detail and assemble
High impact-resistant load-bearing structure to more than 60 joule
Very high crack resistance
Highly weather-resistant
A variety of different application surfaces are possible
Huge choice of renders, colours and surface design elements
Breathable light weight concrete for vapour permeability
Existing and new buildings up to high-rise level
Complaint rate technically almost zero

Ranges

StoTherm Insulation Systems

Scope of Use

The StoTherm Classic System & StoTherm Vario Insulation System have been appraised as external wall cladding systems for buildings within the following scope:

The scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1
Constructed with timber framing complying with the NZBC
With a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/• AS1, Table 2
Situated in NZS 3604 Building Wind Zones up to, and including ‘Very High’

For weather tightness and structural wind loading when used on timber and steel framed buildings subject to specific design up to a differential design ultimate limit state (ULS) wind pressure of 2.5 kPa.

Must only be installed on vertical surfaces except for tops of parapets, sills and balustrades. For use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sill.

StoTherm is suitable for both residential and commercial building and is combined with the selected Sto Plaster System of choice.

Statement of Building Code Compliance

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

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

The StoTherm Cavity System and StoTherm Insulation System are expected to have a serviceable life of at least 30 years provided they are maintained in accordance with this Appraisal, and the EPS sheets, StoTherm Sheets, StoTherm Panels, fixings and plasters are continuously protected by a weathertight paint system and remain dry in service.