BS EN ISO 12572:2016 – TC:2020 Edition
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Tracked Changes. Hygrothermal performance of building materials and products. Determination of water vapour transmission properties. Cup method
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 86 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | compares BS EN ISO 12572:2016 |
| 2 | TRACKED CHANGES Text example 1 — indicates added text (in green) |
| 50 | European foreword Endorsement notice |
| 53 | Foreword |
| 55 | 1 Scope 2 Normative references 3 Terms, definitions, symbols, units and subscripts 3.1 Terms and definitions |
| 56 | 3.2 Symbols and units |
| 57 | 3.3 Subscripts 4 Principle 5 Apparatus |
| 58 | 6 Test specimens 6.1 General principles for preparation of test specimens 6.2 Dimensions of test specimens 6.2.1 Shape and fit 6.2.2 Exposed area 6.2.3 Thickness of test specimens |
| 59 | 6.3 Number of test specimens 6.4 Conditioning of test specimens 6.5 Testing low resistance specimens 7 Procedure 7.1 Test conditions |
| 61 | 7.2 Preparation of specimen and test assembly 7.3 Test procedure |
| 62 | 8 Calculation and expression of results 8.1 Mass change rate |
| 63 | 8.2 Density of water vapour flow rate 8.3 Water vapour permeance |
| 64 | 8.4 Water vapour resistance 8.5 Water vapour permeability 8.6 Water vapour resistance factor |
| 65 | 8.7 Water vapour diffusion-equivalent air layer thickness 9 Accuracy of measurement 9.1 General 9.2 Specimen area 9.3 Specimen thickness |
| 66 | 9.4 Sealants 9.5 Weighing precision 9.6 Control of environmental conditions 9.7 Variations in barometric pressure during test 10 Test report |
| 68 | Annex A (normative) Methods suitable for self-supporting materials |
| 70 | Annex B (normative) Methods suitable for loose fills |
| 72 | Annex C (normative) Methods suitable for membranes and foils |
| 73 | Annex D (normative) Methods suitable for mastics and sealants |
| 75 | Annex E (normative) Methods suitable for paint, varnishes, etc. |
| 76 | Annex F (normative) Correction for the effect of a masked edge of a specimen |
| 78 | Annex G (normative) Correction for resistance of air layers |
| 79 | Annex H (normative) Method for calculating the water vapour resistance of the air layer in the cup |
| 80 | Annex I (informative) Weighing repeatability, weighing interval and specimen size needed to achieve desired accuracy |
| 81 | Annex J (informative) Conversion table for water vapour transmission units |
| 82 | Bibliography |
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BS EN ISO 12572:2016
Hygrothermal performance of building materials and products. Determination of water vapour transmission properties. Cup method…
