GIA Winner Wants More Cross-Border Collaboration
The "Dean of North American Building Science" thinks there is much that Europeans can learn from Americans about home building, and vice versa.
Joseph Lstiburek, Ph.D., P.Eng., ASHRAE Fellow, Principal, Building Science Corporation won the NAHB Global Innovation Award for Research and Global at the 2022 International Builders' Show.
Although Lstiburek's work is centered in the United States and Canada, his reputation as the "Dean of North American Building Science" has led to projects all over the world.
Lstiburek said many Europeans haven’t learned relevant lessons that would help them combat their own issues with stucco, air conditioning and frame buildings.
"The difference that the Europeans didn’t understand was that they built out of masonry – three to four layers of brick, and stucco on the outside," he said. "Their stucco leaks, and the water gets reabsorbed into the brick. It is safely stored until it dries.
"With the transition to wood frame and insulation, things get wet that shouldn’t get wet, and stay wet longer," he said. "The U.S. invented air conditioning; the Europeans are just figuring air conditioning out. They are learning the hard way that air conditioning draws water to the inside, since the moisture flow is from warm to cold."
However, when it comes to retrofitting and rehabbing, Lstiburek said that Americans have a lot to learn from other countries. "The Brits and the Quebecois know more about old buildings than anybody else," he said, due to the number of older, historic homes in their inventory.
Lstiburek attributes the United States' relative success with building science to its climate diversity and mix of buildings. "We have everything from Fairbanks, Alaska to Miami, Florida – hot and humid to arctic and even sub arctic," he said. "Because we have everything, we’ve had to learn fast and that’s what makes America so special."
Lstiburek will join members for a free online conversation, Shop Talk: Building Techniques: Avoiding Leaks, on Tuesday, May 24, 2-3 p.m. ET.
Latest from NAHBNow
Aug 21, 2025
New and Existing Homes Remain Largely Unaffordable in Second QuarterWhile new homes remain largely unaffordable, builder efforts to improve housing affordability paid dividends in the second quarter of 2025, according to the latest data from the NAHB/Wells Fargo Cost of Housing Index (CHI). The CHI results from the second quarter of 2025 show that a family earning the nation’s median income of $104,200 needed 36% of its income to cover the mortgage payment on a median-priced new home. Low-income families, defined as those earning only 50% of median income, would have to spend 71% of their earnings to pay for the same new home.
Aug 20, 2025
Custom Home Building Grows as Broader Housing Market StrugglesAn analysis of census data by NAHB economists shows that custom home building grew 4% in the second quarter of 2025 as high interest rates and home prices suppress demand for traditional spec home production.
Latest Economic News
Aug 21, 2025
Existing Home Sales Rise in JulyExisting home sales rebounded in July as mortgage rates retreated from the recent peak and home price growth slowed, according to the National Association of Realtors (NAR).
Aug 21, 2025
New and Existing Homes Remain Largely Unaffordable in Second QuarterWhile new homes remain largely unaffordable, builder efforts to improve housing affordability paid dividends in the second quarter of 2025, according to the latest data from the National Association of Home Builders (NAHB)/Wells Fargo Cost of Housing Index (CHI).
Aug 20, 2025
Retreat for Single-Family Built-for-Rent HousingSingle-family built-for-rent construction fell back in the second quarter, as a higher cost of financing crowded out development activity.