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One of the most iconic images that shaped my career in the early days was from Madelene Rousseau’s presentation at “”Building Science Insight: ’83”…Humidity, Condensation and Ventilation in Houses…… Read More

So here we are…ready for the “big show”…but not quite at the big show.  Think of it this way…to get to zero energy conservation takes us most of the way…and the last bit is the renewables piece… Read More

Snap, Crackle and Pop are beloved gnome characters…cartoon mascots of Rice Krispies breakfast cereal produced by a small company you might have heard of…Kellogg’s1.  Rice Krispies are one of the… Read More

At the most basic level a building is an environmental separator – it keeps the outside out and the inside in.  Why?  Well, sometimes the outside sucks and we want to keep it from getting… Read More

My Spidey sense is tingling [1]Note that this is an “opinion column” [2]Work with me on this: In response to COVID, the CDC and others are now recommending a room air change rate of 4 to 6… Read More

Hanging cladding – hang on cladding, cladding hang on[1].. Continuous exterior insulation is such an obvious thing to do….and we are finally getting serious about it…but we still seem to go out of… Read More

Sometimes obvious things are not so obvious.  And when you miss them, they can be expensive….and embarrassing.  And often the embarrassing is worse than the expense….”that was… Read More

We looked at exterior spray foam previously (BSI-048: “Exterior Spray Foam”, April 2011). Exterior spray foam typically is used in commercial applications.  Most residential… Read More

…articulaciones* y esquinas y penetraciones...much more stylish…much more interesting than English.  The battle to control water entry is won at building joints and corners[1] not so much at… Read More

Some folks hate foam insulation. The rigid board stuff, the spray stuff, the flexible stuff. They don't like the blowing agents, they don't like the fire retardants, they don't like the chemical… Read More