ISO 22185-1:2021

INTERNATIONAL ISO
STANDARD 22185-1
First edition
2021-02
Diagnosing moisture damage
in buildings and implementing
countermeasures —
Part 1:
Principles, nomenclature and
moisture transport mechanisms
Reference number
©
ISO 2021
© ISO 2021
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Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Moisture transport mechanism . 2
5 Moisture sources . 3
6 Moisture damage . 3
7 Phenomena resulting from moisture . 4
7.1 Algae/bryophyte . 4
7.2 Aesthetic changes . 4
7.3 Condensation . 4
7.4 Corrosion . 4
7.5 Crack . 4
7.6 Creaking . 5
7.7 Deformation . 5
7.8 Dissolved destructive elements . 5
7.9 Dissolution . 5
7.10 Expansion . 5
7.11 Floating . 5
7.12 Floor squeak/floor squeaking . 5
7.13 Freezing . 6
7.14 Frost heave . 6
7.15 Wood decay . 6
7.16 Gap . 6
7.17 Hardening . 6
7.18 High humidity . 6
7.19 Low humidity . 6
7.20 Mite . 7
7.21 Mould . 7
7.22 Peeling/exfoliation/delamination/adhesion loss/spall . 7
7.23 Rust . 7
7.24 Shrinkage . 7
7.25 Softening . 7
7.26 Thrust up/creeping up . 7
7.27 Unplanned bulk water entry . 8
7.28 Water-leakage . 8
7.29 Warpage . 8
7.30 Wetting . 8
7.31 Wrinkle . 8
8 Performance affected by moisture . 8
8.1 Envelope or enclosure — Risk of water penetration, deterioration of components
and systems — Important for designing for durability . 8
8.1.1 Ability to support bonded materials . 8
8.1.2 Airtightness . 9
8.1.3 Capillary breaking layer. 9
8.1.4 Durability . 9
8.1.5 Electrical insulation performance . 9
8.1.6 Environmental separation . 9
8.1.7 Function of components . 9
8.1.8 Functionality . 9
8.1.9 Moisture-proof performance/damp-proof performance . 9
8.1.10 Thermal insulation performance . 9
8.1.11 Waterproofing performance .10
8.2 Occupant comfort and owner value — Aesthetics, satisfaction of users .10
8.2.1 Acoustic separation .10
8.2.2 Building aesthetics .10
8.2.3 Opening performance of windows and doors .10
8.2.4 Occupant comfort .10
8.2.5 Property value .10
8.2.6 Visibility (performance of transparent material).10
8.2.7 Walkability of floor .10
8.3 Structure — Risk of collapse .11
8.3.1 Structural capacity and deflection .11
8.3.2 Structural support .11
9 Building components affected by moisture .11
9.1 Building equipment .11
9.2 Exterior finishing material.11
9.3 Joint .11
9.4 Hardware .12
9.5 Interior finishing material .12
9.6 Opening .
...