For GBA subscribers: Confused about dew point? Dew point is a temperature, but it is also a measure of how much moisture there is in the air. My latest blog tries to untangle the confusion: greenbuildingadvisor.com/articles/dept/…

For GBA subscribers: If you have an air handler and ducts in your unconditioned attic, you may be wondering, "Should I build a mechanical room in my attic?" Maybe enclosing the air handler with insulated walls will help. Here's a reaction to the idea: greenbuildingadvisor.com/articles/dept/…

For GBA subscribers: It's time for a fresh look at the problem of ducts in unconditioned attics. My blog today takes a comprehensive look at all possible solutions to the problem. greenbuildingadvisor.com/articles/dept/…

For GBA subscribers: Thunder and lightning! Does your house need lightning rods? In my blog this week, you can read about exploding garage door openers, a severed tree, and two totaled vehicles. greenbuildingadvisor.com/article/preven…

Researchers from Scripps Institution of Oceanography report that the ocean temperature off San Diego is 78.8 degrees F -- the highest ocean temperature ever recorded for that location. nytimes.com/2018/08/07/us/…

For GBA subscribers: My blog this week discusses the ins and outs of insulating scissors trusses. Here is the link: greenbuildingadvisor.com/article/insula…

For GBA subscribers: In this week's blog, I share a nerdy debate comparing the virtues of two different airtightness metrics: ach50 and cfm50 per square foot of building shell. Should code targets be changed? greenbuildingadvisor.com/article/time-m…

For GBA subscribers: What do you do when you want to add more attic insulation, but the space near the eaves is inadequate? greenbuildingadvisor.com/article/insula…

For GBA subscribers: This week, I discuss a building science mystery: Summertime condensation near the peak of a cathedral ceiling. greenbuildingadvisor.com/article/summer…

For GBA subscribers: Have you noticed that code requirements concerning slab insulation are almost impossible to interpret? Read my latest blog, "Determining Sub-Slab Rigid Foam Thickness." greenbuildingadvisor.com/article/determ…

Scientists warn: We don't have much time left to enact strict limits on carbon. If we fail, we'll soon face "mass die-offs of coral reefs, widespread drought, famine and wildfires, and potentially conflict over land, food and fresh water." nytimes.com/2018/10/09/opi…

For GBA subscribers: This week's blog provides advice on building a dry well (to handle rainwater from your roof). greenbuildingadvisor.com/article/all-ab…

For GBA subscribers: My latest blog responds to Joe Lstiburek's prediction that we're headed for a future in which U.S. single-family homes go off the grid. Here is the link: greenbuildingadvisor.com/article/contem…

For GBA subscribers: My latest blog looks at all of the different brands of heat-pump water heaters that are offered to American and Canadian shoppers. Here is the link: greenbuildingadvisor.com/article/revisi…

The NY Times usually does a terrible job reporting on home energy issues. This time, a NYT reporter named Jen Miller bucked the trend and wrote an accurate article. Well done! (Quibble: we call them "water heaters," not "hot water heaters.") nytimes.com/2018/11/02/rea…

For GBA subscribers: If you're tempted to install electric-resistance heating elements under your bathroom floor, and you're wondering, "Good idea or not?", you might want to read this week's blog. greenbuildingadvisor.com/article/electr…

For GBA subscribers: My blog this week gives instructions on flashing exterior doors. greenbuildingadvisor.com/article/flash-…

For GBA subscribers: This week's blog discusses moisture accumulation on the interior of wall sheathing that shows up during winter construction. greenbuildingadvisor.com/article/conden…

For GBA subscribers: My latest blog provides advice to homeowners who are looking for a builder who is familiar with energy-efficient construction techniques -- but just can't seem to find one. greenbuildingadvisor.com/article/cant-f…

I worked for years as a roofer, so I identify with the views expressed in this article. vox.com/first-person/2…