BS EN 12086:2013
Current
The latest, up-to-date edition.
Thermal insulating products for building applications. Determination of water vapour transmission properties
Hardcopy , PDF
English
03-31-2013
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Test specimens
7 Procedure
8 Calculation and expression of results
9 Accuracy of measurement
10 Test report
Annex A (informative) - Conversion table for water
vapour transmission units
Annex B (informative) - Examples of test assemblies
Annex C (informative) - Information about correction
procedures
Bibliography
Defines the equipment and procedures for determining the water vapour transmission rate, water vapour permeance and water vapour permeability of test specimens in the steady state under different sets of specified test conditions.
| Committee |
B/540
|
| DevelopmentNote |
Supersedes 95/106819 DC. (08/2004) Supersedes 12/30259124 DC. (04/2013)
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This European Standard specifies the equipment and procedures for determining the water vapour transmission rate, water vapour permeance and water vapour permeability of test specimens in the steady state under different sets of specified test conditions. It is applicable to thermal insulating products.
It is intended to be used for homogeneous materials and for products which may contain integral skins or facings of different material(s).
A material is considered to be homogeneous, with regard to mass distribution, if its density is approximately the same throughout, i.e. if the measured density values are close to its mean density.
This test method is not normally used for determining the water vapour transmission properties of single, separate vapour barriers (of high diffusion resistance), such as prefabricated films, foils, membranes or sheets, due to the long duration of the test. For products with a vapour retarder or barrier with a water vapour diffusion equivalent air layer thickness sd ≥ 1 000 m (see 3.6) other test methods e.g. IR-detection can be used for measuring the single separate vapour retarder or barrier, provided that the results obtained are in the same range as the values measured in accordance with this standard.
The water vapour transmission rate and permeance values are specific to the test specimen (i.e. the product) thickness tested. For homogeneous products, the water vapour permeability is a property of the material.
| Standards | Relationship |
| UNE-EN 12086:2013 | Identical |
| NEN EN 12086 : 2013 | Identical |
| I.S. EN 12086:2013 | Identical |
| SN EN 12086 : 2013 | Identical |
| EN 12086:2013 | Identical |
| DIN EN 12086:2013-06 | Identical |
| UNI EN 12086 : 2013 | Identical |
| NBN EN 12086 : 2013 | Identical |
| NS EN 12086 : 2013 | Identical |
| NF EN 12086 : 2013 | Identical |
| 03/106472 DC : DRAFT MAY 2003 | BS 3927 - SPECIFICATION FOR RIGID PHENOLIC FOAM (PF) FOR THERMAL INSULATION IN THE FORM OF SLABS AND PROFILED SECTIONS |
| 05/30121972 DC : DRAFT JUL 2005 | BS 4841-2 - RIGID POLYURETHANE (PUR) AND POLYISOCYANURATE (PIR) PRODUCTS FOR BUILDING END-USE APPLICATIONS - PART 2: SPECIFICATION FOR LAMINATED INSULATION BOARDS FOR INTERNAL WALL LININGS AND CEILINGS |
| 05/30121961 DC : DRAFT JUL 2005 | BS 4841-3 - RIGID POLYURETHANE (PUR) AND POLYISOCYANURATE (PIR) PRODUCTS FOR BUILDING AND END-USE APPLICATIONS - PART 3: SPECIFICATION FOR LAMINATED INSULATION BOARDS (ROOFBOARDS) WITH AUTO-ADHESIVELY BONDED FACINGS FOR USE AS ROOFBOARD THERMAL INSULATION FOR BUILT-UP ROOFS UNDER BITUMENISED ROOFING MEMBRANES |
| 05/30124175 DC : DRAFT JUL 2005 | BS 4841-4 - RIGID POLYURETHANE (PUR) AND POLYISOCYANURATE (PIR) PRODUCTS FOR BUILDING AND END-USE APPLICATIONS - PART 4: SPECIFICATION FOR LAMINATED INSULATION BOARDS (FLOORBOARDS) WITH AUTO-ADHESIVELY BONDED FACINGS FOR USE AS ROOFBOARD THERMAL INSULATION COVERED BY SINGLE-PLY NON-BITUMINISED ROOFING MEMBRANES |
| 05/30124996 DC : DRAFT JUL 2005 | BS 4841-5 - RIGID POLYURETHANE (PUR) AND POLYISOCYANURATE (PIR) PRODUCTS FOR BUILDING END-USE APPLICATIONS - PART 5: SPECIFICATION FOR LAMINATED INSULATION BOARDS FOR PITCHED ROOFS |
| PD 6621:1998 | Guidance on the new European test method standards for thermal insulation materials |
| 05/30125016 DC : DRAFT JUL 2005 | BS 4841-6 - RIGID POLYURETHANE (PUR) AND POLYISOCYANURATE (PIR) PRODUCTS FOR BUILDING END-USE APPLICATIONS - PART 6: SPECIFICATION FOR LAMINATED INSULATION BOARDS FOR FLOORS |
| 05/30121957 DC : DRAFT JUL 2005 | BS 4841-1 - RIGID POLYURETHANE (PUR) AND POLYISOCYANURATE (PIR) PRODUCTS FOR BUILDING END-USE APPLICATIONS - PART 1: SPECIFICATION FOR LAMINATED INSULATION BOARDS FOR WALL CAVITIES |
| EN 12085:2013 | Thermal insulating products for building applications - Determination of linear dimensions of test specimens |
| ISO 9346:2007 | Hygrothermal performance of buildings and building materials — Physical quantities for mass transfer — Vocabulary |
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