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Building Science The codes and processes of blower door testing commercial buildings By Jon Harrod | August 22, 2025 Commercial blower door test using multiple fans. Photo credit: Nate Gusakov, Green Mountain Enclosure Consulting LLC. Code requirements for airtightness in commercial buildings are becoming more stringent. In 2019, the American Society of Heating, Refrigeration, and […]
Hello, very soon my new Andersen wood-clad e-series casement windows will be arriving to replace my existing damaged windows. I’ll be doing a full-fin replacement so interior and exterior trim will be removed. When I installed the windows 25+ years ago I used the barrier method, just as I had for years as a window […]
Hi, long time reader and practitioner, but 1st post 🙂 I’m hoping for some of the talented wisdom I often see here… QUESTION: 1) do i break rule of no double vapor barriers or the rule of need a vapor barrier on top of slab to protect natural wood flooring2) Is my tapered sleepers & plywood […]
Hi all, looking to replace a tiled roof in CZ3b. Currently there is a tile roof, un nailed over a felt underlayment. Most contractors want to use some type of peel and stick underlayment but many houses here have unvented cathedral ceilings, so they rely on the vapor permeability of the underlayment for any condensation […]
I’m in climate zone 5. I have large old double-glazed windows (R-2?) in rooms that are rarely used. Can I safely apply an insulating panel directly onto the interior surface of the glass? Otherwise, those windows are constant energy drains.Rigid fiberglass has an R-value of about 4.5/inch. Two inches of this would increase the R-value […]
IIM Calcutta launches Advanced Programme in Smart Manufacturing Leadership Construction World
Industry 4.0: Embracing the Future of Industrial Automation to Build a Resilient Business cio.com