Building Science

Crandell’s presentation provides an excellent primer on the many applications of continuous insulation based on a comprehensive body of building science knowledge resulting in recent building code and energy code advancements.

For a boat hull, it is best to essentially eliminate wetting potential with the use of a highly water- and vapor- resistive hull, or at least outer coating on the hull, right?

Unlike boats, a building’s walls must have some capability to “breathe” instead of being totally impervious to all forms of water.

I’m a second-generation home builder working in northeastern Connecticut, and I’ve been building net-zero energy homes for about 10 years. In my early years doing this, I experimented with structural insulated panels (SIPs) and other methods, but these days, I have settled down to a formula based on a cellulose-insulated double stud wall sheathed with plywood on the outside, and a flat attic with deep blown cellulose.

Halo Exterra, a foam board insulation for above-grade exterior insulation applications is also designed to be a water-resistive barrier (which means that no building paper needs to be used).

In the U.S., our understanding of air leakage through building envelopes has evolved over the course of 100 years or more.

Today, it is well understood that controlling air leakage through building envelopes by proper use of air sealing materials and methods is crucial for many reasons.

Thermal bridges in walls can reduce the overall performance of a building. In addition, ignoring thermal bridges can result in significantly over-estimated building performance and moisture condensation ultimately leading to corrosion, mold, rot and more.

The DOE recently released its preliminary determination of energy savings for residential buildings in the 2018 IECC.

To provide a relaxing and healthy living space while keeping heating and cooling costs low, Jon and Rachel required a highly energy efficient insulation solution.