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Radon Mitigation
There are passive and active systems for keeping radon gas from poisoning indoor air—here’s what to know to get them right
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Combustion Safety With Gas Water Heaters
Effective removal of exhaust from natural-draft gas water heaters requires a proper vent or a flue
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Building a Vaulted High-Performance and Foam-Free Roof Assembly
Josh Salinger shows us how to create more space and vent a roof, and do it all with a reduced environmental footprint.
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How To Get a Double-Stud Wall Right
Five principles to ensure the success of this cold-climate high-performance wall assembly
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How to Manage Indoor-Air Quality
Source control, ventilation, dehumidification, and filtration are key to regulating air pollutants such as formaldehyde in our homes
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Understanding Drying Potential
A look at the chemistry and physics of how exterior walls respond to water vapor
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Using Wood-Fiber Exterior Insulation for a Net-Zero Construction
Builder Ben Bogie introduces us to the science and benefits of wood-fiber insulation, plus he explains his installation process for the material on his latest construction project.
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Are Powered Attic Ventilators Ever a Good Idea?
Clearing up the ongoing confusion around the usefulness (or futility) of attic fans
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The Concrete-Free Floating-Plywood Slab Assembly
Watch builder Josh Salinger show how to reduce the environmental impact of a new home by omitting the concrete from the ground-level floors
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What Determines Indoor Carbon Dioxide Levels?
A number of factors can influence CO2 concentrations in a building. Knowing what they are and how ventilation requirements change depending on circumstances is a good first step toward healthy indoor-air quailty.
