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Prologue - Folks sometimes ask me how do I know “that”? How could I possibly know that “that” would happen? I chuckle and answer “that’s because I have good judgment…and good judgment is based on… Read More

If you take rocks and melt them and blow air through them you get fluffy rocks. And fluffy rocks don’t burn. If you take gypsum and make it into sheets you get “sheet rock”. And guess what? Rocks don… Read More

One of the most difficult buildings to build is a building with a swimming pool because–wait for it–there is a swimming pool inside. It gets even worse when the pool is in a ski resort on a… Read More

Spray polyurethane foam (SPF), the high-density stuff,1 is the only product (so far) that can perform all of the functions of the principal control layers of the “Perfect Wall.”2 The functions are… Read More

General Limit States Design, Hygrothermal AnalysisAt a basic level a wall is an environmental separator.  It keeps the outside out and the inside in.  Easy to say, not always easy to do.To function… Read More

The American Foursquare, a Sears, Roebuck & Co. kit home, was a staple of small American towns between 1908 and 1940. More than 100,000 of them were built in America. Homes built prior to 1980… Read More