ARDEX WPM 640

ARDEX WPM 640 is a silane / siloxane-based reactive sealer that provides in-depth protection by hydrophobic and pore-filling crystallization action. It repels water but allows vapor to permit, thus allowing treated substrates to dry gradually without staining. It is suitable for internal and external surfaces such as brickwork, certain types of natural stone, cement render, concrete blocks, fiber cement board and other porous masonry substrates

• Small molecules for deep penetration
• Protects surface against pollution and water
• Allows substrates to breath
• Retains the natural beauty of stone and masonry
• Ready to use