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Window Reflections Can Melt Vinyl Siding
Siding and window manufacturers are reluctant to discuss the problem
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‘Walls Need to Breathe’ and 9 Other Green Building Myths
The Energy Nerd plays Whack-a-Mole with some common misunderstandings in home building
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Saving Energy With Manual J and Manual D
Experts tell builders that HVAC equipment and ducts should be designed according to Manual J and Manual D; the problem is, no one wants to do the calculations
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Sealing Ducts: What’s Better, Tape or Mastic?
Make sure you choose products that provide durable sealing
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Air-Sealing Tapes and Gaskets
Which products stay sticky and flexible?
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Green Building Vocabulary Disputes
Watch out — sloppy terminology may earn you a scolding from the word police
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One Air Barrier or Two?
If your home has an air barrier at the exterior sheathing, do you also need an interior air barrier?
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Energy and Construction Photos from Greece
A gallery of photos from my recent Mediterranean vacation
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When Sunshine Drives Moisture Into Walls
Because of inward solar vapor drive, vapor diffusion from the outside inward is often more worrisome than vapor diffusion from the inside outward — so you need a good vapor barrier strategy
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Five Energy Nerd Classics
Energy, the future of housing, heating system design, and choosing foam insulation.