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Using Rooftop Solar to Meet the Energy Code
The Energy Rating Index compliance path could allow builders to trade insulation for solar panels
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High Humidity in Spray Foam Attics
This is why you need to think of these spaces as conditioned attics
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Building Science Puzzles: The Jigsaw Approach
Tracking down performance problems is all about getting the building science right — and following the rules of jigsaw puzzles
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Buildings Don’t Need to Breathe
The word “breathe” just confuses things
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Does Cheaper Solar Mean We Can Forget Efficiency?
The ramifications of the falling cost of photovoltaic systems
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Installing an Exhaust Fan During a Bathroom Remodel
My 1970 condo now has an exhaust fan in the master bath — and it really moves air!
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How Dirty Is Your Electricity?
Here’s a look at the carbon intensity of electricity by state and region
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Manual J Load Calculations vs. Rules of Thumb
This sample of Manual J results shows that the old way really needs to die
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Seven Reasons to Gut Your Aging Bathroom
The real problems with an out-of-date bathroom are beneath the surface
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Three Reasons to Remove Attic Floor Insulation in a Sealed Attic
Attics insulated with spray foam have different characteristics from vented attics
