Seal-Once™ eco-friendly waterproofers for wood, exotic wood, concrete and masonry and composite decking provide long-lasting protection against water, mold, mildew and UV damage. Safe for the environment, Seal-Once coating products are water-based, non-flammable and contain no VOCs, toxins or irritants. Available in clear or tinted original formulas or specialized marine and industrial grades. Choose Seal-Once as your GREEN deck sealer or stain for worry-free application.

Protects without beading
The advanced technology of Seal-Once penetrates surfaces up to 3/8 inch and bonds to form a superior barrier deep inside. Although beading may be much less evident, this is the ideal application for the longest term protection. Other waterproofers which merely sit on top of the surface will show beading but wear away more quickly, requiring regular re-application. » read more

Green Spec® Listed
The GreenSpec directory by BuildingGreen is the premier trusted source for environmentally preferable building products. Unlike other directories, listings are not sold, they are earned.