SIPs, Hats, and Heat Loss

March 3, 2015

I recently ran across an article that challenged the old wives’ tale about wearing a hat because you lose most of your heat through your head. The article said, “The head as a body part represents about 10% of the average adult’s total body surface area, so in reality, only 10% of your body’s heat is lost from your head.”

Don’t count on a hat alone to keep you warm on cold winter days!

What does that have to do with Structural Insulated Panels? In the building world, a parallel myth suggests that the most important place to insulate is the attic. Don’t get me wrong—the attic and your head are both important in the warm game. But the attic isn’t nearly as important as your walls in controlling energy costs.

According to a study out of Oak Ridge National Laboratory, “Heating and cooling loads associated with wall areas are the highest among all building envelope systems. That includes attic, doors, and windows.”

If you ask most builders where they’d like to see more insulation in a house, they’ll most likely answer “the attic.” However, just like the head in the body, the attic accounts for only a small portion of the building envelope so it doesn’t make the greatest impact in the energy equation.

Don’t build your home based on old wives’ tales. Modern building envelopes need the most insulation in the walls, with systems like Thermocore SIPs. Insulated attics, like hats, are great. But Structural Insulated Panels give you the warmest coat possible. That’s how you win the warm game.