MasterSeal 551 - Elastomeric acrylic reinforced cementitious, waterproofing coating for concrete and masonry​​

MasterSeal 551 is an elastomeric flexible, two component acrylic modified cementitious coating applied by brush, roller or trowel to waterproof concrete, masonry.

Recommended uses:

• Waterproofing of Roofs, Decks, Balcony, etc.
• Water-retaining structures subjected to slight movements.
• Basement-waterproofing
• ​To protect concrete from water, carbonation and de-icing salts. ​​​​

​MasterSeal 551 a ​unique solution

When cured, a 2mm thick MasterSeal 551 membrane shall accommodate movements up to 0.5​mm, or up to 1.2mm when reinforced with 100% virgin polypropylene woven fabric.​ 

Features and Benefits​ of MasterSeal 551

• Protects against carbonation – A 1mm coating provides anti carbonation cover equivalent to over 80cm of concrete.
• Waterproof – Suitable for internal and external waterproofing
• Excellent adhesion – Bonds to porous and non-porous surfaces
• Flexible – Copes with the slight thermal movement of concrete structures
• Suitable for contact with potable water – Can be used for lining concrete water tanks.
• Vapour permeable– Whilst repelling water, allows concrete to breathe thus preventing osmosis.
• Compatible with moist surfaces– Can be applied to 24 hour-old concrete thereby giving immediate protection.
• Robust – suitable for occasional foot traffic​