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Imagine a world where the building code does not allow returns to be installed in closets to control mold and other contaminants. That would be insane right? Welcome to the real world. Let me make… Read More

Five Integrated Pest Management Strategies to Consider Pests include insects and animals that have a harmful effect on humans, food or living conditions.  Pests include insects, termites, ants,… 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 dumb”…”.that hurts”…and… Read More

Wall assembly design and construction needs to consider rain, temperature, humidity as defined by the hygro-thermal regions, annual rainfall and the interior climate classes as environmental loads… Read More

Yes, we have done unvented conditioned attics before….but mostly with spray foam and rigid foam insulations.  But we do not have to use spray foam and rigid foam insulations.  You can use almost… Read More

An edited version of this Insight first appeared in the ASHRAE Journal.By Joseph W. Lstiburek, Ph.D., P.Eng., Fellow ASHRAE The issues with stucco are pretty well understood and we have discussed… Read More

It is pretty weird to dig a big hole and drop a building into it.  A one story house with a basement is really a two story house that you dropped into the ground burying one story.  Think about it…… Read More

Everyone is running around sealing the outside of buildings and the term “air barrier” has gone from obscurity to buzz word in less than a decade.  But if you look at the physics we are sealing the… 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

The problem with flood damaged buildings is that the damage is done by dirty water.  Everything imaginable and unimaginable is in flood water.  We call it “black water” or Category 3 water.  It… Read More