This paper describes an in-house computer program WeatherSmart-1.0. The main purpose of the tool is to facilitate the analysis of the outdoor weather data to obtain representative environmental boundary conditions. These conditions are, in turn, necessary for the analysis of long-term heat-air and moisture responses in building envelopes performed for thermal and moisture design. The environmental boundary conditions generated are location-specific and for the expected usage of the building considered. Review of the literature to highlight the current knowledge in terms of defining both indoor and outdoor Moisture Reference Years (MRYs) is presented. Several approaches to characterise either the indoor or the outdoor environmental conditions are part of the program. The different approaches allow analysis of the environmental conditions that apply moisture and thermal loads on the particular envelope component being studied. Construction-dependent and independent methods for selecting the outdoor MRYs have been incorporated in the tool. The indoor environment, representing the expected usage of the building under consideration, is derived by two approaches for both controlled and uncontrolled indoor environments.

• load on building envelope
• weather data and issues

1. Defining climate regions as a basis for specifying requirements for precipitation protection for walls
2. Environmental boundary conditions for long-term hygrothermal calculations
3. Final Report from Task 8 of MEWS Project (T8-03) - Hygrothermal Response of Exterior Wall Systems to Climate Loading: Methodology and Interpretation of Results for Stucco, EIFS, Masonry and Siding Clad Wood-Frame Walls
4. MEWS methodology for developing moisture management strategies: application to stucco-clad wood-frame walls in North America
5. Report from Task 4 of MEWS Project - Environmental Conditions, Final Report
6. Report from Task 8 of MEWS Project - MEWS Methodology for Developing Moisture Management Strategies - Application to Stucco Clad Wood-Frame Walls in North America
7. Use of hygrothermal numerical modeling to identify optimal retrofit options for high-rise buildings  

1. Influence of material properties on the moisture response of an ideal stucco wall: results from hygrothermal simulation
2. Influence of sheathing membrane and vapour barrier on hygrothermnal response of stucco walls
3. Summary Report from Task 3 of MEWS Project at the Institute for Research in Construction - Hygrothermal Properties of Several Building Materials
4. Use of hygrothermal numerical modeling to identify optimal retrofit options for high-rise buildings  

1. A comparison of empirical indoor relative humidity models with measured data
2. A logical extension of the ASTM Standard E96 to determine the dependence of water vapor transmission on relative humidity
3. A methodology to develop moisture management strategies for wood-frame walls in North America: application to stucco-clad walls
4. A thermal and moisture transport property data base for common building and insulating materials (final report)
5. Application of gamma-ray spectroscopy for determination of moisture distribution in insulating materials
6. Benchmarking of the advanced hygrothermal model hygIRC with mid scale experiments
7. Building envelope design, Part 2: estimating field performance of thermal insulation
8. Criteria for unaccesseptable damage on wood systems
9. Determination of equilibrium moisture content of building materials: some practical difficulties
10. Durability assessments of wood-frame construction using the concept of damage-functions
11. Effect of exfiltration on the hygrothermal behaviour of a residential wall assembly: results from calculations and computer simulations
12. Final Report, IEA-Annex 24, Task 3: Material Properties
13. Influence of material properties on the moisture response of an ideal stucco wall: results from hygrothermal simulation
14. In-Situ performance evaluation of exterior insulation basement systems (EIBS) - spray polyurethane foam: summary report
15. MEWS methodology for developing moisture management strategies: application to stucco-clad wood-frame walls in North America
16. Modeling heat, air and moisture transport through building materials and components
17. Moisture buffering capacities of five North American building materials
18. Moisture diffusivity of building materials from water absorption measurements
19. Moisture transport coefficient of pine from gamma ray absorption measurements
20. On implementing experimental biological damage-functions models in durability assessment systems
21. Prediction of moisture response of wood frame walls using IRC's advanced hygrothermal model (hygIRC)
22. Protecting the long-term performance of building envelope components
23. Report from Task 4 of MEWS Project - Environmental Conditions, Final Report
24. Report from Task 8 of MEWS Project - MEWS Methodology for Developing Moisture Management Strategies - Application to Stucco Clad Wood-Frame Walls in North America
25. Taking guess work out of placing air/vapor barriers
26. Three-dimensional analysis of thermal resistance of exterior basement insulation systems (EIBS)
27. Use of hygrothermal numerical modeling to identify optimal retrofit options for high-rise buildings
28. Vapor transport characteristics of mineral fiber insulation from heat flow meter measurements
29. Water vapor transmission and moisture accumulation in polyurethane and polyisocyanurate foams