If your walls feel cold to the touch, struggle to maintain consistent temperatures, or lead to high energy bills, and your home has no existing exterior wall insulation, you might benefit from a drill and fill insulation upgrade.
This technique is less invasive than a full wall demolition and retrofit, making it desirable to many homeowners in Ontario. Installing blown-in cellulose via drill and fill can be a great retrofit upgrade for homes with no existing exterior wall or ceiling insulation and offers numerous advantages.