2 identical buildings, one with R-19 cellulose one with R-19 fiberglass

Findings show cellulose tightened a building 36% to 38% more than fiberglass

Cellulose insulated house 7 degrees warmer overnight.

After 3 weeks of monitoring the cellulose insulated building used 26.4% less energy!

Cellulose performs as much as 38% better than fiberglass especially in severe climatesDesigning a house with few air changes per hour is just as important as having a good R value of insulation.

This is due to 3 types of heat loss

Conduction (heat transfered through contact)

Convection (heat transfered through air movement)

Radiation (heat transfered through waves of energy emited by an object)