This week has seen another big milestone being hit; the insulation is being blown in! One of the biggest criteria in building a Passive House is to ensure that there is enough insulation in the exterior shell of the building (walls and attic) to lower the amount of energy that will be required to heat the building. In our case the magic numbers according to the Passive House Planning Package (PHPP; the software used to calculate all the PH requirements) are R60 for the walls and R70 for the ceiling. We are meeting these requirements using dense packed cellulose. One of the big things that we love about cellulose is that it is made out of mainly post consumer newsprint. Thermo-Cell (thermocell.com), the company supplying our insulation, indicates that the product we are using, Weathershield, is made of 87% post consumer newsprint! I love recycling!! Cellulose also has lower embodied energy (energy required to manufacture) than other types of insulation.
The insulation has been delivered and Jessy, a representative from Thermo-Cell, has been on hand to teach the crew how to install the cellulose to the property density in the wall cavities. In all there are 500 bags of insulation; at 25lbs per bag that is a LOT of insulation!! We are going to be warm and soundproof!!