DISCLAIMER: The Canadian Wood Council’s Wall Thermal Design Calculator has been developed for information purposes only. From thermal resistance requirements to fire safety and acoustical requirements, the myriad building codes and standards related to insulation and the broader built environment will continue to evolve. (9)), the Energy Step Code (9.36.6) was brought in by the Province in April 2017 as a means of transitioning the market from the current energy-efficiency requirements in the BC Building Code to the Provincial requirement for net zero energy ready buildings … 9.36.5.10. Reference should always be made to the Building Code having jurisdiction. Note that the 2015 National Energy Code for Buildings (NECB) expresses insulation requirements not as minimum thermal resistance (R effective), but as maximum thermal transmittance, designated by the letter U. U is simply the reciprocal of R (effective). You can find information on zone specific R-values, as well as the calculation and modelling method for showing compliance with the Building Code Clause H1. ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. Canadian R Value Code Requirements. Note: If designing your building envelope based on the IRC, this reduction of insulation from the requirements of Section N1102.1.2 shall be limited to 500 square feet (46 m2) or 20 percent of the total insulated ceiling area, whichever is less. Energy Step Code Requirements for Part 9 Residential Buildings Pre-Build Compliance Report for 9.36.5 or 9.36.6 (Energy Step Code) – to be submitted prior to issuance of Building Permit A bulletin describing the Energy Step Code, which is the mandatory energy efficiency pathway for Part 9 residential buildings in Kelowna as of December 1, 2019. a) provide an unobstructed air space, between the insulation and the underside of the roof sheathing, that is i) not less than 25 mm in dimension, and ii) of sufficient cross area to meet the attic or roof space venting requirements of Article 9.19.1.2., and b) extend vertically not less than 50 mm above the top of the insulation. This guide helps residential builders and industry stakeholders in B.C. Last updated: January 2017. interpret and comply with changes to the 2012 British Columbia Building Code for energy efficiency for housing and small buildings. As code levels advance, keep informed about innovative practices to meet or exceed code requirements using cost-effective fiberglass and mineral wool insulation. If designing to the PA Alternative Energy Code, there is no area limit on cathedral ceilings. ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. When designing and building a cathedral ceiling using spray foam insulation you need to take into account code related to: Unvented Cathedral Ceiling Code Local codes based on IRC 2009: Section R806.4 Local codes based on IRC 2012: Section R806.5 Vented Cathedral Ceiling Code Local codes based on IRC 2009: Section R806.1 Local codes based on IRC 2012: Section R806.1 Spray Foam It is one in a series of guides that provide information for specific climate zones in B.C. Published on 30 October 2008 ISBN: 978-0-478-32748-9 (Print) / 978-0-478-32747-2 (Online) Walls Building code insulation requirements . All of the above applies to the way housing codes are written in Canada.