Concrete Crack Sealant Waterproof & Weatherproof High Adhesion
High Quality
Free US Shipping
Hassle Free Returns
Concrete cracks sealed permanently without hassle
Permanent sealing of fine concrete cracks — waterproof, weatherproof, and temperature resistant from -40°F to 176°F
Why is this CrackGuard perfect for you?
✔ Deep-acting sealing for reliable protection: CrackGuard penetrates deeper into cracks than surface fillers, effectively preventing water, dirt, and frost from entering. This ensures a secure, long-lasting seal that outperforms standard filler products.
✔ High resistance to extreme temperatures: Able to withstand temperatures ranging from -40°F to 176°F, CrackGuard remains UV-resistant and weatherproof throughout all seasons, unlike temperature-sensitive alternatives.
✔ Strong adhesion combined with flexibility: This adhesive maintains elasticity without losing adhesion, preventing cracks from reappearing while outperforming rigid fillers that can fail over time.
Specifications
Volume: 7.1 oz (200 g) or 17.6 oz (500 g)
Shelf life: 12 months unopened
Hardening time: Initial strength after 6 hours, fully cured after 24 hours
Temperature resistance: -40°F to 176°F
Frequently asked questions
Quick answers about ordering from Couje. More detail on our full FAQ page.
How much does shipping cost, and how long does it take?
Shipping is free on every order — no minimum. Orders are typically delivered within 4–12 business days (processing included), and every order includes tracking. Full details are in our Shipping Policy.
What is your return policy?
You can return items within 30 days of delivery. Once your return is received and inspected, we process your refund to the original payment method. See our Return & Refund Policy for the full process.
How do I track my order?
As soon as your order ships, we email you a tracking number. You can follow your delivery at any time on our Track Your Order page.
How can I reach customer service?
Email us at support@couje.com or use our contact form. Our team is available Monday – Friday: 09:00 AM – 05:00 PM EST and replies within 24 hours. Saturday – Sunday: closed.