Water-Resistive Barriers and the Building Code
May 27, 2025 · These ASTM requirements have been in the code for a long time, but some may be unfamiliar with the requirements of the products used as a WRB. R703.2 Water-resistive barrier This …
Continuous Insulation, Part 1 - GreenBuildingAdvisor
Nov 30, 2023 · In this post, the first in a three-part series, I will talk about building code requirements and building science principles pertaining to continuous insulation.
Makeup Air for Kitchen Exhaust - GreenBuildingAdvisor
Jan 15, 2020 · A look at the IRC’s prescriptions for kitchen exhaust makeup air—what the building codes state and where they fall short.
IRC Section R303: Natural Light Calculation Requirements ...
Feb 15, 2021 · My only thought is to, in combination with the code required egress windows, utilize transom-like windows (fixed): locate high up on the walls (I’ll have 9′ walls). This kind of stuff starts to …
When to Perform a Blower Door Test (And when not to)
Jan 24, 2025 · The code requirements for blower door testing are found in the International Residential Code (IRC), Chapter 11, Energy Efficiency. In the 2021 IRC, the codes discussing testing are found …
HVAC Design Requirements in the International Building Codes
Apr 11, 2018 · The International Residential Code (IRC) spells out what is required for HVAC design in homes. Image Credit: International Code Council Building codes, especially those related to energy …
Code confusion on utility/mechanical room - GreenBuildingAdvisor
May 21, 2022 · I am trying to find information in the 2015 building code that specifies the rules for utility/mechanical rooms. I am specifically looking for info on: 1. Type and thickness of drywall 2. …
Building Codes Update Vapor Retarder Requirements
Dec 10, 2021 · The complete source for building, designing, and remodeling green homes Musings of an Energy Nerd Building Codes Update Vapor Retarder Requirements The code is more complicated …
Pressure-Treated Sill Plates and the Building Code
Mar 9, 2009 · A "green light" moisture meter reading in the pressure-treated sill because of something this building assembly has. Image Credit: Peter Yost Code requirements for wood-concrete contact …
Understanding the Energy Code: The 2021 IECC Attic Insulation …
Sep 12, 2025 · After each code adoption, the Department of Energy releases a determination as to whether updated editions of the IECC would improve energy efficiency in residential buildings. The …