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.
- +14
- Shipped within 0-2 business days
- Shipping to United States: 3-5 business days*
- Free Shipping Included
- **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
Hazard information
P102
Keep out of reach of children.
P271
Use only outdoors or in a well-ventilated area.
H335
May cause respiratory irritation.
P280
Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
P405
Store locked up.
GHS02
Flammable
GHS07
Health hazard/Hazardous to the ozone layer
H226
Flammable liquid and vapour.
H336
May cause drowsiness or dizziness.
H317
May cause an allergic skin reaction.
H412
Harmful to aquatic life with long lasting effects.
GHS08
Serious health hazard
H332
Harmful if inhaled.
P304 + P340
IF INHALED: Remove person to fresh air and keep comfortable for breathing.
H334
May cause allergy or asthma symptoms or breathing difficulties if inhaled.
H351
Suspected of causing cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
P342 + P311
If experiencing respiratory symptoms: Call a POISON CENTER/doctor/…
Documents
Always follow local regulations and product guidance.
Free standard delivery on US mainland orders. Express delivery 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 present products of potential interest.
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.
Similar Products
You might like
