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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… Read More

First there were the Etruscans.  Then there were the Romans.  Then there were the Goths.  Then there were the Medici.  Then Leonardo1and Michelangelo. … Read More

A building is an environmental separator. In fundamental terms its function is to “keep the outside out” and the “inside in”.  The outside provides “environmental loads” as does the… Read More

A little bit of history…back in the day the United States was known for its manufacturing prowess[1].  In high speed and high volume production “punching[2]” was and is the least expensive… 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

How can you take a system with thousands of years of history and screw it up?  Easy.  Keep improving it until it does not work.  Babylonians used it. Egyptians used it. Greeks used it… 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… Read More

In 1666 London burned – the city, not a building.  It was called the “Great Fire of London”.  In 2017 a building burned, not the city.  It is being called the “Great Fire of London”.… Read More

The best strategy is not to have an ice-dam in the first place.  We covered this way back when (BSI-046: Dam Ice Dam, February 2011).  It is pretty straightforward on how to… Read More

Buildings and cities age – as do humans. Sometimes we get better and sometime we do not. Some of us eat healthier and get more exercise. Some of us do not. Some of us look better as we get older.… Read More