Choosing the right insulation.

Insulation is probably the most talked about part of preventing Heat Loss. And as we all know insulation comes in a wide variety of products such as:

  1. Fiberglass Batts – this is the most common and most widely used type of insulation.
  2. Blown-in Fiberglass – similar product as Fiberglass Batts with its own unique characteristics.
  3. Blown-in Cellulose – another vary common type of insulation that works extremely well in attic spaces and less so in vertical walls.
  4. Roxul Batts – a well-known insulation that is made from molten lava, its nickname is Rock Woll.
  5. Foam – typically thought of as a Spray-In type of insulation that is excellent and at the same time very expensive!

Insulation is measured in “R-Values.”  An R-Value is a measurement of how much Resistance is provided by the insulation.  Or, how well the insulation stops the movement of heat.  The greater the Resistance the better the insulating capabilities.  Hence, an R-Value is good and as its Resistance Improves the R-Value goes up.  The higher the R-Value the better the insulation.  This concept of R-Values is often seen as the most important factor although we know that it is only one part to a high performing wall.

Today’s picture is far too often typical of how Fiberglass Batts are installed and the photograph shows a uniquely awful installation job.  Every place where the insulation does not touch something is a great place for Heat Loss.  We like Fiberglass Batts the least.

The blown-in insulations are a great improvement in that they tend to fill all of the cracks and crevices which gives you much better performance.

Roxul Batts are probably our favorite as they tend to seal off all the cracks and crevices while providing a higher insulating value.  Roxul is by far a good step up especially in Vertical exterior walls.  This is standard in all homes from Vermont Modular.

Foam, spray foam is excellent but we seldom use it as it is so expensive and does not represent a good value.  We do use rigid foam as an exterior Thermal Barrier but, that will be a conversation for another day.

Questions?  What are your thoughts?  Call us at 802.985-5855

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