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We use cookies and data to Deliver and maintain Google services Track outages and protect against spam, fraud, and abuse Measure audience engagement and site statistics to understand how our services are used and enhance the quality of those services If you choose to “Accept all,” we will also use cookies and data to Develop […]

We use cookies and data to Deliver and maintain Google services Track outages and protect against spam, fraud, and abuse Measure audience engagement and site statistics to understand how our services are used and enhance the quality of those services If you choose to “Accept all,” we will also use cookies and data to Develop […]

We use cookies and data to Deliver and maintain Google services Track outages and protect against spam, fraud, and abuse Measure audience engagement and site statistics to understand how our services are used and enhance the quality of those services If you choose to “Accept all,” we will also use cookies and data to Develop […]

We use cookies and data to Deliver and maintain Google services Track outages and protect against spam, fraud, and abuse Measure audience engagement and site statistics to understand how our services are used and enhance the quality of those services If you choose to “Accept all,” we will also use cookies and data to Develop […]

…drywall,  flooring, ceiling, baseboard, et cetera? Children often fear the unknown monsters hiding beneath their bed or in the closet, but it’s the adults who should be afraid. The monsters hiding from them are real. I’ve seen a bunch of nasty stuff hidden from view in the many houses I’ve inspected, worked on, and lived […]

Dear GBA members and contributors,  We. have this roof and wall assembly and we have a hundred questions about it.  We are hoping that y’all could locate any problems with it and answer questions. Our goals are in alignment with GBA insofar as building ultra high-performance homes that last a very long time are by […]

Join the leading community of building science experts Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field. Start free trial Replies Expert Member BILL WICHERS | Mar 18, 2026 12:01pm | #1 I use and like the Airthings system. I’m not sure […]

I’m attaching 2 images from the DOE website showing a vented and an unvented crawlspace. What would you consider the pros and cons of vented vs unvented approaches?  One question about the vented option. It shows 1″ of polyiso under the floor. The ratio of polyiso to batt looks to me like it could result […]

Product Guide Several new products stood out on the 2026 International Builders’ Show floor—from insulated sheathing panels and fire-treated OSB to a lightweight ERV cabinet and a clever new approach to roof ventilation. By RANDY WILLIAMS | March 18, 2026 The 2026 International Builders’ Show took place February 17–19 in Orlando, Florida. The show itself […]