MasterSeal 550 is an acrylic-modified, portland cement-based flexible, waterproofing membrane for concrete and masonry. Use it above or below grade on interior or exterior surfaces.

• Waterproof membrane
• Creates a flexible membrane
• Breathable
• Ready-to-use k

• Protects against soil moisture and water seepage; extends life of structural slabs and underlayment
• Accommodates substrate movement; prevents cracks from telegraphing; provides excellent underlayment for thin-set tile applications
• Allows interior moisture vapor to escape
• Easy to mix and place
• Low odor

• Walls and floors
• Tiled pools and fountains
• Plaza decks
• Balconies
• Mechanical rooms