A homeowner from Saint-Joseph-de-Sorel, Quebec, contacted us after the failure of his attic insulation attempt, despite a recent investment with another contractor. Our specialist explained that simply adding insulation without sealing air leaks does not solve issues related to heat loss and humidity. We therefore removed the old insulation, sealed meticulously all air leaks, and then installed TruSoft cellulose insulation up to an R60 thermal value. This solution reduces the risk of mold, improves residential comfort, and lowers energy costs.