Preface

This is the second edition of CSA A440.6, High exposure fenestration installation . It supersedes the previous edition published in 2020. CSA A440.7, the user guide to CSA A440.6, has been prepared to explain the content and use of CSA A440.6. This Standard and User Guide were prepared by the Subcommittee on Installation of High Exposure Fenestration Products, under the jurisdiction of the Technical Committee on Performance Standards for Windows and the Strategic Steering Committee on Construction and Civil Infrastructure, and have been formally approved by the Technical Committee. This Standard and User Guide have been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. They have been published as National Standards of Canada by CSA Group. ------------------------------------------------------------------------------------------------------------------------------------

• CSA A440.6:26
• High exposure fenestration installation Scope 1.1 This Standard sets forth characteristics of effective and durable installation methods, in both new and existing buildings, of fenestration products within the scope of AAMA/WDMA/CSA 101/I.S.2/A440 that are intended for installation in buildings of all occupancies to which NBC Parts 3, 4, 5, and 6 of Division B apply

1.2

In addition to fenestration products within the scope of AAMA/WDMA/CSA 101/I.S.2/A440, this Standard applies to the installation of

1. fenestration products installed as ribbons, strips, or punched windows that are fabricated with components typically used in curtain wall systems
2. window walls
3. and storefronts (where exposed to the exterior)

1.3

This Standard covers the installation process from pre-installation procedures to post-installation, and includes fenestration design features that allow improved performance of products installed in high exposure conditions. This Standard also outlines processes related to fenestration installation (e.g., shop drawing review, field testing, and mock-up testing) to improve the performance of the installed product; therefore, the provisions of this Standard should be considered by responsible parties at the following stages

1. product design
2. building design
3. field installation
4. and post-installation

1.4

This Standard provides minimum requirements for the installation of fenestration products in high exposure situations and where compliance to Part 5 of the NBC, or comparable requirements in applicable local codes, is required. CSA A440S1 provides guidance on the determination of the design wind pressure and driving rain wind pressure exposure conditions to which fenestration products are subjected. This Standard addresses issues that could compromise the performance of the fenestration product as established by testing to the requirements of AAMA/WDMA/CSA 101/I.S.2/A440 or as otherwise required by Part 5 of the NBC.

1.5

Where installation methods are not specifically addressed in this Standard, or where there are differences between this Standard and installation instructions of the manufacturer of a fenestration product, a design professional should be consulted for a solution consistent with the intent of the minimum requirements and principles in this Standard and with the intent of Part 5 of the NBC or comparable sections in applicable local codes. Note: For further requirements, see Clause 5.5.2.3.

1.6

This Standard describes laboratory testing procedures for combination window assemblies, including window walls.

1.7

The application of this Standard requires a working knowledge of applicable federal, provincial/ territorial, and municipal building codes and regulations specifically concerning but not limited to required means of egress, fire safety requirements, and requirements for safety glazing.

1.8

This Standard does not apply to

1. selection of fenestration products for a given application
2. installation of i) storm windows or storm doors; ii) fire-rated fenestration; iii) vehicular-access doors (i.e., garage doors); iv) commercial entrance systems
3. revolving doors; vi) commercial steel utility doors (e.g., roof access doors or doors to electrical rooms); vii) sloped glazing (other than unit skylights, roof windows, or tubular daylighting devices); viii) curtain wall except as noted in Clause 1.2 a); ix) interior fenestration products
4. sunrooms; xi) bay and bow windows; xii) balcony enclosures; and xiii) glazed architectural structures as referred to in Part 5 of the NBC
5. maintenance of installed fenestration products (see Annex G)
6. rebuilding of fenestration products
7. and fabrication of fenestration products, whether such fabrication takes place in a factory or at the installation site (i.e., stick-built assemblies)

1.9

This Standard does not purport to address all of the safety problems associated with its use, nor does it set out requirements relating to the safety of the person installing the units. It is the responsibility of the installer to obtain necessary health and safety training, and to follow proper procedures for the safe handling and application of installation materials and fenestration products.

1.10

This Standard is not intended to replace professional advice. When information provided in this Standard is incorporated into buildings, it should be reviewed by knowledgeable building professionals and reflect the specific conditions and unique design parameters of each building. Use of this Standard does not relieve designers of their responsibility to comply with applicable building codes, standards, and by-laws with respect to the selection, interface design, and installation of fenestration products.

1.11

This Standard assumes its users are familiar with the terminology, procedures, requirements of good building practice, and available installation information provided by fenestration product manufacturers.

1.12

This Standard does not address the qualifications and skills that installers should possess. It assumes familiarity with the fundamentals of building construction in Canada as described in Division B, Part 5 of the NBC, or equivalent local code, and of installation techniques for fenestration products normally available in Canada. Although guidance is provided in the manner of installation of fenestration products, this Standard is not a training manual.

1.13

Annex H provides information on climate change, its potential effects on fenestration in buildings, and guidance for climate change-resilient design for fenestration products and installation.

1.14

In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.15

The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only. ------------------------------------------------------------------------------------------------------------------------------------- CSA A440.7:26 - User guide to CSA A440.6:26, High exposure fenestration installation Scope 1.1 In addition to fenestration products within the scope of AAMA/WDMA/CSA 101/I.S.2/A440, CSA A440.6 also applies to the installation of

1. fenestration products installed as ribbons, strips, or punched windows that are fabricated with components typically used in glass and metal curtain wall systems
2. window walls (as defined under "other fenestration assemblies" in Part 5 of the NBC)
3. storefronts (where exposed to the exterior). The individual components of window wall (such as fixed units, vent operator units, sliding door units, and swing door units) can be classified under, and must individually meet, the specified requirements from AAMA/WDMA/CSA 101/I.S.2/A440 and CSA A440S1, as these standards govern for these components. As window wall is considered a combination fenestration product, it is governed by CSA A440.6, and under the terms of CSA A440.6, Clause 11.1.1, the connections between these components must also meet the requirements of AAMA/WDMA/CSA 101/I.S.2/A440 and CSA A440S1. If two different performance level units are within the same fenestration product combination, the lower performance level achieved may be applied to the combination assembly unless the overall combination is tested. Although there are performance class categories for the sub-assemblies of window wall, there are no such categories for the assemblage known as window wall. The performance class is not applicable to window wall because AAMA/WDMA/CSA 101/I.S.2/A440 (NAFS) testing does not account for evaluation of inter-storey drift, dynamic water testing, and thermal movement considerations. Refer to CSA A440.6, Clause 11.2, for further guidance on a) rainscreen performance
4. thermal control and condensation resistance
5. and full-scale testing, both laboratory and field performance

1.5

If the fenestration manufacturer's instructions are not followed, it might result in the voiding of the warranty.

1.8

For product performance selection information, see CSA A440S1. For recommendations for product selection criteria for high exposure locations, see Annex Lin CSA A440.6.

1.9

Installers should be aware of existing hazardous materials, such as asbestos or lead paint. They should request a copy of the hazardous material survey or designated substance survey for the building prior to commencing any work.