Ronseal Isoflex Liquid Rubber (Black) 750ml
Flexible, waterproof roofing sealant with 20-year protection. Resists cracking & weather extremes. 750ml black liquid rubber.
The Ronseal Isoflex High-Performance Liquid Rubber offers an advanced, permanent, and flexible waterproof coating, specifically formulated for roofing applications. With 5 times greater flexibility than conventional bitumen coatings, it delivers extremely long-lasting protection against the elements.
This tough and durable coating resists cracking, perishing, and peeling, ensuring reliable performance across virtually all roofing surfaces—including metal, bitumen, felt, and more. It provides 20-year performance when applied with proper surface preparation and adheres securely to even weathered substrates.
Key Features:
- Superior Flexibility – Moves with roof expansion/contraction
- Weatherproofing – Impervious to rain, UV, and extreme temperatures
- Universal Application – Bonds to almost any roofing material
- Long-Term Protection – 20-year performance with correct application
- Permanent Waterproof Seal – Forms a continuous rubberised barrier
Available in a deep black finish, this 750ml variant is ideal for small to medium roof repair or waterproofing tasks.
- **Metal roofing** (corrugated sheets, flashings)
- **Flat roofs** (bitumen, felt, EPDM)
- **Gutters & downpipes** (sealing joints)
- **Chimney stacks & vents** (weatherproofing)
- **Material:** Acrylic-rubber hybrid
- **Performance Life:** Up to 20 years (with preparation)
- **Flexibility:** 5× higher than bitumen coatings
- **Weather Resistance:** UV-, frost-, and rainproof
- **Coverage:** Varies by surface (check packaging)
- **Colour:** Black
- **Size:** 750ml
- **Weight:** 904g
Free standard shipping on U.S. mainland orders. Express shipping options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For defective items, contact us within 14 days for a replacement or refund.
View Full Delivery & Returns PolicySecure Transactions
We take the utmost care with your payment and personal details. Our website uses advanced encryption technology, including Secure Sockets Layer (SSL), to protect your information during transmission. You can verify a secure connection by looking for 'https' and a locked padlock in your browser.
Cookie Policy
Cookies enhance your shopping experience by keeping track of your cart and remembering you when you return. We also use banner advertising based on your browsing history to show products you might be interested in.
Security Warning
Beware of phishing scams! We will never ask for personal details via email. If such information is required, we'll ask you to contact us by phone. If you receive an email requesting sensitive information, do not respond and let us know immediately.
