OBC 2006 › Division B
5.5.
Version 0 — in force 31 December 2006
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- Edition
- OBC_2006
- Division
- B
- Provision
- 5.5.
- Version
- v0
(1) This Regulation comes into force on December 31, 2006.
Read directly from the regulation's own commencement section.
O. Reg. 350/06 · commencement 2.2.1.1(1)
This version stayed in force until the next edition replaced it. What follows is that edition’s base regulation’s commencement — the takeover that ended this one.
(1) Subject to Sentences (2) and (3), this Regulation comes into force on January 1, 2014.
Read directly from the regulation's own commencement section.
O. Reg. 332/12 · commencement 4.4.1.1(1)
This looks wrong
Tell us what is wrong and we will verify & correct our mapping.
- Edition
- OBC_2006
- Division
- B
- Provision
- 5.5.
- Version
- v0
(1) This Regulation comes into force on December 31, 2006.
Read directly from the regulation's own commencement section.
O. Reg. 350/06 · commencement 2.2.1.1(1)
This version stayed in force until the next edition replaced it. What follows is that edition’s base regulation’s commencement — the takeover that ended this one.
(1) Subject to Sentences (2) and (3), this Regulation comes into force on January 1, 2014.
Read directly from the regulation's own commencement section.
O. Reg. 332/12 · commencement 4.4.1.1(1)
Provenance
OBC 1997 · continues from 5.5. — Pro
Base · O. Reg. 350/06 · ext← current
Original — base regulation
OBC 2012 · continues as 5.5. — Pro
5.5. — Vapour Diffusion
Content not available for this version.
5.5.1. — Vapour Barriers
Content not available for this version.
5.5.1.1. — Required Resistance to Vapour Diffusion
(1) Where a building component or assembly is subjected to differentials in temperature and water vapour pressure, the properties and position of the materials and components in those components or assemblies shall be such that they control vapour diffusion or permit venting to the exterior so as to minimize accumulation of condensation in the building component or assembly.
(2) Except as provided in Sentence (3), a vapour barrier shall be installed to provide the principal resistance to water vapour diffusion.
(3) A vapour barrier is not required where it can be shown that uncontrolled vapour diffusion will not adversely affect any of,
(a) the health or safety of building users,
(b) the intended use of the building, or
(c) the operation of building services.
Text · e-Laws consolidated snapshot
5.5.1.2. — Vapour Barrier Properties and Installation
(1) The vapour barrier shall have sufficiently low permeance and shall be positioned in the building component or assembly so as to,
(a) minimize moisture transfer by diffusion, to surfaces within the assembly that would be cold enough to cause condensation at the design temperature and humidity conditions, or
(b) reduce moisture transfer by diffusion, to surfaces within the assembly that would be cold enough to cause condensation at the design temperature and humidity conditions, to a rate that will not allow sufficient accumulation of moisture to cause deterioration or otherwise adversely affect any of,
(i) the health or safety of building users,
(ii) the intended use of the building, or
(iii) the operation of building services.
(2) Coatings applied to gypsum wallboard to provide required resistance to vapour diffusion shall conform with the requirements of Sentence (1) when tested in accordance with CAN/CGSB-1.501-M, “Method for Permeance of Coated Wallboard”.
(3) Coatings applied to materials other than gypsum wallboard to provide required resistance to vapour diffusion shall be shown to conform to the requirements of Sentence (1) when tested in accordance with ASTM E96, “Water Vapour Transmission of Materials” by the desiccant method (dry cup).
Text · e-Laws consolidated snapshot
Provenance
OBC 1997 · continues from 5.5. — Pro
Base · O. Reg. 350/06 · ext← current
Original — base regulation
OBC 2012 · continues as 5.5. — Pro