Northern Thermal Comfort
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Arbor Vitae, WI 54568

The Insulation Lab

Ducts in the Attic – A Very Bad Idea!

Jeff Aderholdt - Monday, June 08, 2015

Not long ago, I arrived at a new house to start insulating. When I surveyed the house, I was surprised to see that some of the duct work for the heating system was in the unheated attic. Surprise quickly moved to irritation. When the heating system installer arrived, I pointed out the situation, reminding him that it's not the 1960's and this is not acceptable anymore. The rest of the day was a bit tense.  More

Box Sill Insulation - To Foam or Not To Foam

Jeff Aderholdt - Monday, December 24, 2012

In recent years, there have been a lot of insulation advancements. New techniques have been developed and employed to make buildings tighter and more energy efficient. The results have been mixed. (See Flash and Batt - Risky in Cold Climates). More

Fiberglass verses Cellulose - Which is Better

Jeff Aderholdt - Tuesday, March 27, 2012

Ford or Chevy? Coke or Pepsi? PC or Mac? Less filling, taste great? Over the years there have been many controversies and debates. In insulation, one of the biggest debates is over which is the better insulation material, fiberglass or cellulose. Well, which is REALLY better? More

Dense Pack Cellulose – Cellulose Reborn

Jeff Aderholdt - Thursday, August 25, 2011

As energy costs have increased, so has interest in improving insulation techniques. One such insulation technique that is gaining popularity is what is called “dense-pack cellulose”. Dense-pack cellulose is a technique that allows an insulation installer to blow cellulose insulation into wall cavities of new homes during the construction, before the interior paneling or drywall is installed. In a 2 X 6 wall, dense-pack provides an R-value of about R-21. With the dense-pack technique, the performance advantages of cellulose insulation is now available for the new home builder. That's right! Cellulose, it's not just for remodeling anymore! More

Moisture, Psychrometrics and Relative Humidity - Their Effect on Structure and Air Quality

Jeff Aderholdt - Wednesday, August 03, 2011

Earlier, I briefly addressed the importance of moisture and humidity issues in a home on the Why Moisture Control.page. Since this is such an important issue for both structure health and for the health of the those living in the home, it seemed appropriate to expand on the subject. There is a lot of information available from a variety of sources, a lot of it is very technical and difficult to understand. What I will attempt to do is to filter this data into something a little easier to understand and hopefully more useful. More

Flash and Batt – Risky in Cold Climates

Jeff Aderholdt - Wednesday, July 27, 2011

In recent years, insulation science and technology has grown by leaps and bounds. New products and new techniques are constantly hitting the market. Added to this, is the fact that we live in an information age. Information about the latest and greatest ways to insulate your new home is at our fingertips. A few clicks of a computer mouse, or a few buttons on the television remote control, and we have a banquet of ideas, all courtesy of our favorite do-it-yourself show or website. This is a good thing. Knowledge is power. Homeowners are empowered to be able to make informed decisions in regards to how their home is to be built. But not always.  More

Birds, Bees And Energies

Jeff Aderholdt - Friday, June 24, 2011

Birds Bess and Energies More