This publication gives guidance on the thermal transmittance of generic insulated sheet steel wall and roof assemblies. Tables are provided with U-factors and effective R-factors for common assemblies. Parametric studies were also carried out to show the influence of varying the spacing or characteristics of the components. The objective is to provide the building designer with the information needed to comply with the new energy codes.
Most provinces in Canada are in the process of enacting energy conservation requirements for new buildings. The National Energy Code of Canada for Buildings, 2010 (NECB) is the model code that the province may adopt or alter as they deem necessary. For example, Ontario has enacted Supplementary Standard SB-10 Energy Efficiency Supplement that has different requirements than the NECB. Another standard also referenced in Canada is ASHRAE 90.1-2010, Energy Standard for Buildings Except Low-Rise Residential Buildings.
B20 will help you understand the National Energy Code of Canada for Buildings, 2010 and will help you determine the best insulated sheet steel wall and roof assembly for your project.