Rust-Oleum Leak Seal Rubber Coating | 340G, Black

Name: Rust-Oleum Leak Seal Rubber Coating | 340G, Black
SKU: 265494
Availability: InStock

R335.00

Rust-Oleum Leak Seal Rubber Coating is a durable, flexible black spray designed to seal leaks and cracks with a watertight barrier. This 340g aerosol applies easily to roofs, gutters, chimneys, and more, providing corrosion resistance and moisture protection for long-lasting performance in outdoor repair applications.

Rust-Oleum Leak Seal Rubber Coating | 340G, Black Details:

Size: 340g
Colour: Black
Type: Rubberised protective coating
Recommended Use Areas: Gutters, roofs, flashing, chimneys, PVC, downspouts, windows, RVs
Not Recommended For: Rubber surfaces or continuous water immersion
Drying Conditions: Apply outdoors or in well-ventilated spaces between 10°C and 32°C, humidity below 85%
Application Surfaces: Porous and non-porous, dry only (not for wet application)
Coating Method: Aerosol spray, buildable in layers with overlapping passes
Coverage: 0.7–0.9 m² per can
Cure Time: Tack-free in 15–30 min, touch dry in 2–4 hours, fully cured in 24 hours

What’s In The Box?

1 x Rust-Oleum Leak Seal Rubber Coating (340g, Black)

3 in stock

Rust-Oleum Leak Seal Rubber Coating Overview

Formulated for ease of use and quick sealing, this spray provides a watertight, flexible coating that protects against moisture, rust, and corrosion. It’s ideal for sealing joints, filling small cracks, or weatherproofing vulnerable external fixtures.

Rust-Oleum Leak Seal Rubber Coating Benefits and Features

Watertight Protection: Prevents water entry and corrosion
Flexible Bond: Maintains elasticity to accommodate material movement
Easy Spray Application: Fast-drying and buildable with clear overlap guidelines
All-Weather Seal: Designed for exterior exposure and temperature variation
Versatile Use: Great for metal, plastic, and wood surfaces commonly found on roofs and exteriors

Steps to Follow for Using the Rust-Oleum Leak Seal Rubber Coating

Preparation:

Clean and dry the surface thoroughly
Use a wire brush to remove grime or flaking materials
For glossy or painted surfaces, lightly sand if required—follow all safety precautions

How to Apply the Coating Rust-Oleum Leak Seal Rubber Coating

Shake can vigorously for at least one minute after mixing ball rattles
Hold 20–30 cm from surface and apply the first coat lightly
Allow to dry for 15–30 minutes before applying a second, heavier coat
Overlap passes by 2.5 cm and do not exceed three heavy coats

Cleanup & Storage:

Wipe excess spray or overspray promptly
Store can upright in a cool, dry area
Allow 24 hours for full curing before exposing to water

A Few Scenarios Where the Coating Can Be Used:

Sealing cracks on metal gutter seams
Touching up vulnerable rooftop flashing
Waterproofing window frame edges and downspouts
Coating PVC joints in RV and outdoor structures
Preventing corrosion around ventilation chimneys

Other Products You May Need for Your Waterproofing and Repair Projects

Health and Safety

Apply in open or well-ventilated areas only. Do not apply to wet surfaces or when rain is expected. Use appropriate safety gear if scraping or sanding. Keep out of reach of children and avoid inhalation or contact with skin and eyes.

Want to know more about this product? Click here to learn more.

Additional information

Weight	0.453 kg
Dimensions	7 × 8 × 20 cm

Reviews

There are no reviews yet.

Be the first to review “Rust-Oleum Leak Seal Rubber Coating | 340G, Black”