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“What we’ve got here is failure to communicate . . .”1In what is turning out to be an unfortunate turn of phrase the terms “unvented attics” and “unvented roofs” have entered the lexicon. A lot of… Read More

We live at the bottom of an ocean of air. Each of us is carrying around 14.7 pounds per square inch when at the beach in Miami1. We are powerful creatures indeed. Imagine carrying around 101,000… Read More

Putting ductwork outside is bad enough, but putting ductwork in an attic is even worse (Photograph 1). Attics are even hotter than outside during the summer and as cold as the outside in the winter.… Read More

Life was simple when I grew up in Canada. Winters were long and cold, we had no air conditioning, walls dried to both the outside and the inside and the Toronto Maple Leafs would win Stanley Cups.… Read More

When Mother Nature came up with wood it gave it magical properties that try as we might we mere humans find it difficult to improve upon or to transfer to other materials we come up with.1 One of… Read More

One of the dirty little secrets that never gets talked about is that water leaks through building papers, building wraps and housewraps and runs down between them and the sheathings that they cover.… Read More

To claim that something that has holes in it can act as a water control layer is a pretty interesting argument. It is both true and untrue.I have it on good authority, that for there to be a leak you… Read More

I remember sitting around listening to stories my dad and his friends would tell when they were hanging around in the basement playing cards. They would laugh uproariously, tease each other, get… 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

Blue Hawaii[1]Hawaii is a magnificent place – except if you want to build there.  Huh?  What’s so difficult about building on islands in the middle of the Pacific?  Check out Photograph 1.  Waikiki… Read More