NANO GUARD CONCRETE AND MASONRY SEALER

SEAL-ONCE® NANO GUARD™ Concrete and Masonry Sealer’s nano-polymer formula creates a 

flexible breathable barrier by permeating the surface and bonding to the structure of the concrete. It 

works to extend the life of the concrete, masonry and brick by protecting against the most common 

causes of concrete damage including

• Freeze/thaw damage

• Cracking

• Spalling

• Efflorescence

• Stains from salts & chemicals

NANO GUARD Concrete and Masonry Sealer is non-film forming, non-yellowing formula that will not 

alter the appearance of decorative pavers, stone, concrete, brick of masonry or change over time. It 

prevents mold, mildew, algae and fungi from adhering to the concrete, preventing stains and long-

term damage.