Chimney Liners - Chimney Information | Canadian Chimney
Acceptable Liners in Canada. To determine what liner is suitable compliant, chimney liners must meet one of the following standards: CSA A324 Clay Flue Liners. ULC S635, Standard Lining Systems for Existing Masonry or Factory Built Chimneys and Vents. There are 3 classes within this standard that outline suitable uses for each ULC-S635.
