If your home was built before 1990 there is a small chance your ceiling texture contains asbestos.
Though it is rare, it is not something you should take lightly.
We recommend homeowners with homes built 1990 and prior to have their ceilings tested.
Alberta.ca website has some great information about dealing with asbestos.
Alberta Asbestos Abatement Manual
This google search will show a plethora of asbestos testing companies here in Alberta
And this google search will show many asbestos abatement companies in Alberta