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 delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
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