At the annual International Builders’ Conference in January, Wall Street Journal reporter June Fletcher writes about green innovations that continue to pop up in showcases.

As she evaluates different green products and systems, she writes, “Why, I wonder, do I consistently see these products in show houses, but not so much in regular houses?”

The article goes on to describe four specific products featured at the January convection, from spray foam insulation (which is lightweight, highly effective, better at filling small gaps than fiberglass fill or batts) to solar shingles (a lighter, better-looking alternative to solar panels, originally introduced in 2005), insulated concrete forms (around for 20 years!) and structural insulated panels (around since the 1930s yet still rarely adopted, mostly because of retraining that would be required).

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