Why XPS Needs Surface Treatment & Are You Aware of the Advantages?
Regarding surface treatments for XPS insulation boards, besides fluting and planing, there are indeed several other common processes. The primary objective of all these treatments is to enhance the bonding strength between the board and rendering mortar, adhesives, or other materials. This is necessary because the original smooth, dense surface offers poor adhesion.
Fluting
Planing
Embossing
Heat Treatment/Fusing
For optimal selection during specification, it is highly recommended to request samples of boards with different surface treatments from suppliers, or to ask for pull-off strength test reports corresponding to the specific treatment methods. This allows for the best choice based on the specific project requirements.