Tantan Onetan Waterproof Agent ST-01 (5 Gallon)
$375.00
Onetan Waterproof Sealant
All-in-one rooftop waterproofing solution that replaces complicated multi-layer urethane systems with a single, easy application—no primer, no mid-coat, no top-coat required. Just roll or brush it on, and its advanced formula delivers exceptional adhesion, elasticity, UV resistance, and 100% waterproof protection in one seamless layer. Fast-drying, incredibly durable, and backed by a full 10-year warranty, Onetan ST-01 gives you professional-grade, long-lasting results with minimal effort.
Do it once, do it right.
There’s a reason Tantan is Korea’s #1 consumer-rated waterproof sealant 3 years running: near-zero defects, outstanding customer service, and nano-particle technology that shrugs off cracks and extreme weather. One coat, ultimate protection, extreme durability, and a full 10-year warranty.
One coat is all you need.
Forget the old urethane hassle: primer + mid-coat + top-coat, days of waiting, expensive tools, and pro crews. With Tantan Onetan ST-01, anyone can do it — DIY or pro. Just open the bucket, roll or brush it on like regular paint, and you’re done in one single layer. Dries in 24 hours. No callbacks, no extra labor, no wasted days. One product. One coat. One day. Real savings that last.
We've got your back.
Not sure which Tantan product is perfect for your roof, balcony, or wall? Just ask. Our team replies fast, guides you step-by-step, and helps you pick the right solution — completely free. Thousands already trust Korea’s #1 waterproof sealant because it’s truly that easy. Still not convinced? Check our quick YouTube & Instagram demos — 60 seconds and you’ll see why one coat is all you’ll ever need.
All-in-One Waterproofing Solution
Primer | Mid-Coat | Top-Coat – All in One | Apply directly over existing urethane
ST-01 simplifies waterproofing with an easy, all-in-one formula that anyone can apply and repair. Once cured, it forms a tough, rubber-like membrane with self-healing properties that seal cracks effectively. With strong adhesion to concrete, factory roofs, wood, and metal, it provides outstanding elasticity and long-term durability. Spot repairs are simple and long-lasting with minimal defects over time. Compatible with water-based paints, ST-01 can also be applied indoors—even on damp surfaces—with only slightly extended drying time. Fast-drying technology (30 minutes to 1 hour) ensures continuous work without delays. Certified safe and fully compliant with international standards.
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Blue ,Gray ,Green ,Red Brown ,White |
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