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

R335.00

Rust-Oleum Leak Seal Rubber Coating in white is a flexible, spray-on sealant that seals leaks and cracks with a watertight barrier. This 340g rubberized coating is ideal for exterior repairs, offering corrosion protection and moisture resistance on roofs, gutters, chimneys, downspouts, and more.

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

Size: 340g
Colour: White
Type: Rubberised protective coating (spray-on)
Recommended Applications: Gutters, roofs, flashing, chimneys, PVC, windows, RVs, downspouts
Exclusions: Not suitable for rubber surfaces or continuous water immersion
Drying Conditions: Apply outdoors or in ventilated spaces; temp 10°C–32°C, humidity <85%
Surface Prep: Clean and dry the area; use a wire brush for grime; sand glossy surfaces cautiously
Application Method: Shake vigorously, spray 20–30 cm from surface; light first coat, heavier second
Dry Time: Tack-free in 15–30 min, touch-dry in 2–4 hrs, fully cured in 24 hrs
Coverage: 0.7–0.9 m² per can

What’s In The Box?

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

4 in stock

Rust-Oleum Leak Seal Rubber Coating Overview

Designed to stop leaks fast, this coating creates a strong, weather-resistant seal on exterior surfaces prone to water intrusion. Its white finish blends well with painted trims, while the flexible formula ensures a long-lasting hold even in changing weather.

Rust-Oleum Leak Seal Rubber Coating Benefits and Features

Seals Cracks and Gaps: Ideal for roof joints, gutters, and siding
Flexible and Watertight: Prevents rust, corrosion, and moisture damage
Easy to Apply: Spray-on nozzle delivers smooth coverage with minimal overspray
Multi-Surface Compatibility: Works on metal, wood, PVC, and more
Bright White Finish: For low-visibility exterior or restoration jobs

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

Preparation:

Clean and dry the application area thoroughly
Remove loose paint, rust, or dirt using a wire brush
Sand glossy surfaces lightly (ensure lead-safe practices if applicable)

Application of Rust-Oleum Leak Seal

Shake the can for 1 minute after hearing the mixing ball
Hold the can 20–30 cm from the surface and apply the first coat lightly
Wait 15–30 minutes; apply second (heavier) coat with 2.5 cm overlap
Do not exceed three heavy coats

Cleanup:

Clean nozzle after use to prevent clogging
Store upright in a dry, cool environment
Let coating cure 24 hours before exposure to moisture

A Few Scenarios Where the Rubber Coating Can Be Used:

Sealing rooftop flashing or chimney seams
Protecting exterior PVC joints or cracks
Coating RV trim to prevent water intrusion
Repairing downspouts or metal balcony fittings
Guarding old window edges or wood trim from damp damage

Other Products You May Need for Your Outdoor Maintenance Kit

Health and Safety

Always apply in a well-ventilated area. Avoid use on wet surfaces or rubber materials. Wear safety gear when sanding older paint. Keep away from heat or open flames. Keep out of reach of children.

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, White”