CLEAR WATERPROOFER is the ultimate waterproofer for exterior wood & concrete, designed to preserve and protect wood surfaces while allowing them to age and gray naturally without decay. Effective on thermally modified wood and tropical hardwoods, this advanced formula uses nano-technology to deliver a water-based, eco-friendly solution that deeply penetrates the wood, forming a long-lasting, invisible barrier against water damage, mildew, and other environmental stressors. Ideal for decks, fences, and outdoor furniture, this waterproofer for exterior wood & concrete ensures your wood stays beautiful and resilient in all weather conditions.

All surfaces should be cleaned before sealing for best penetration and performance. Remove all old coatings, dust, debris and loose material. Remove oil, grease, algae, grime, mill glaze and mildew stains with SEAL-ONCE® Multi-Surface Cleaner.

After cleaning, test absorbency of surface by sprinkling a few drops of water on the surface. If the water does not readily penetrate the surface, stripping will be necessary to remove old coatings prior to applying SEAL-ONCE® Clear Waterproofer.

Retest surface when dry.

Then apply SEAL-ONCE® All Wood Brightener to brighten and neutralize wood after cleaning. Follow instructions before applying SEAL-ONCE® Clear Waterproofer.