This last step makes the cellulose flame resistant and prevents corrosion and proliferation of mould and insect pests as prescribed in the CAN/Upressure-blown in the walls and ceilings (LC-S703 standard for cellulose fibre insulation).
“Cellulose fibre insulation is not used much yet in large buildings in Québec, mainly because small and large contractors are sourcing from different distribution networks. Ultimately, it’s a matter of habit,” says André Bourassa, founder of the Bourassa Maillé architectural firm.
In the eyes of Bourassa, a supporter of ecomaterials, this insulation product would be very effective in the condominium building sector, not only for insulation but also for soundproofing between floors.
He also highlights that this insulating material is easy to use in existing buildings because it can be installed without tearing down every structure in place. “Not to mention that at the end of the service life of a building, the insulation is easily reusable simply by sucking it out from the old structure. Furthermore, as it is non-toxic and does not adhere to other components, it facilitates dismantling and allows the reuse of construction waste for other purposes,” concluded André Bourassa, stressing that cellulose wadding is widely used in France and Japan.