► Rust-Oleum | Leakseal Paints

Flexible, Waterproof Coatings for Sealing Cracks, Gaps & Surface Leaks Water is one of the fastest ways to destroy building materials, machinery housings or outdoor structures. Once moisture finds an entry point, it spreads fast—lifting coatings, feeding corrosion & weakening substrates. Rust-Oleum LeakSeal Paints stop those failures before they grow,...

Flexible, Waterproof Coatings for Sealing Cracks, Gaps & Surface Leaks

Water is one of the fastest ways to destroy building materials, machinery housings or outdoor structures. Once moisture finds an entry point, it spreads fast—lifting coatings, feeding corrosion & weakening substrates. Rust-Oleum LeakSeal Paints stop those failures before they grow, forming a flexible, watertight membrane that seals cracks, gaps, seams & porous surfaces across concrete, metal, PVC, timber, roofing components & more. When a leak threatens productivity or asset life, LeakSeal delivers a durable barrier that keeps moisture out.

Tradies know the headache of “quick fix” sealers that dry, brittle, peel under movement or simply fail after the first weather cycle. Rust-Oleum eliminates those issues with rubberised formulations that stretch, flex & maintain adhesion even when substrates move or expand. Whether stopping a drip on a gutter run, sealing a hairline crack in concrete, or reinforcing a rust-prone seam on machinery, LeakSeal makes repairs fast, clean & long-lasting.

Crews familiar with Shock-Absorbing Lanyards, Wiring & Connectors or Masonry Nails will appreciate how LeakSeal reduces maintenance downtime by forming a membrane that conforms to irregular surfaces. Even rough or uneven substrates can be sealed without specialised equipment.

Workshops focused on efficient repair cycles often store LeakSeal tins inside Stationary Workshop Cabinets, prep surfaces using Sanding Discs, or clean debris with Cleaning Chemicals & Solutions before applying a layer.

What’s in This Collection:

► Rust-Oleum LeakSeal Flexible Rubber Coatings
‣ Built for sealing cracks, gaps, porous surfaces & moisture-prone areas across metal, timber, masonry & plastics.

► Rust-Oleum LeakSeal Spray Systems
‣ Suited for fast application on irregular shapes, difficult angles & hard-to-reach seams.

► Rust-Oleum LeakSeal Reinforcement Products
‣ Used with coatings to strengthen vulnerable joints, flashing, edge transitions & active leak points.

► Rust-Oleum LeakSeal Specialty Sealants
‣ Designed for roof repairs, pipe penetrations, ducting, gutters & exterior repairs exposed to weather cycles.

 

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  • Rust-Oleum - Leakseal Matt Black - Spray 340g
    Rust-Oleum - Leakseal Matt Black - Spray 340g | 273563
    Rust-Oleum LeakSeal Matt Black Spray 340g | 273563 The Rust-Oleum LeakSeal Flexible Rubber Coating is a black rubberised spray coating designed to seal leaks and cracks while protecting surfaces against moisture and corrosion. Suitable for roofs, gutters, flashing, ductwork, PVC, and masonry, this flexible...
    $26.98
    $26.98
  • Rust-Oleum - Leakseal Matt Clear - 236ml
    Rust-Oleum - Leakseal Matt Clear - Spray 312g | 273564
    Rust-Oleum LeakSeal Matt Clear Spray 312g | 273564 The Rust-Oleum LeakSeal Flexible Rubber Coating is a clear rubberised protective spray designed to fill and seal leaks and cracks while maintaining a transparent finish. This flexible watertight coating helps prevent moisture penetration, rust, and corrosion...
    $26.98
    $26.98
  • Rust-Oleum - Leakseal Matt Clear - 236ml
    Rust-Oleum - Leakseal Matt White - Spray 340g | 367858
    Rust-Oleum LeakSeal Matt White Spray 340g | 367858 The Rust-Oleum LeakSeal Flexible Rubber Coating is an easy-to-use rubberised protective coating designed to fill and seal leaks and cracks. Delivering a watertight, flexible seal, this matt white spray helps prevent moisture penetration, rust, and corrosion...
    $26.98
    $26.98

Leak Protection That Withstands Movement & Weather

Leaks rarely show up in ideal conditions—they develop in areas with movement, thermal expansion, vibration, worn sealant lines or substrates already weakened by moisture. Rust-Oleum LeakSeal Paints take on these challenges by forming a flexible membrane that absorbs movement instead of tearing, allowing substrates to shift while keeping water out. This membrane performance becomes even more reliable with fast fulfilment through Same Day Dispatch, supported by ongoing Warranty & Parts Support when teams need confidence during repeated maintenance cycles.

Once LeakSeal becomes part of your repair workflow, problems resolve faster. Cracks stop spreading. Moisture stops travelling. Equipment housings stay dry. Roof penetrations hold through storm cycles. Concrete & metal surfaces maintain integrity because water doesn’t get the chance to creep inside. Performance improves visibly across gutters, flashing, exterior joints, roof sheets, pipe collars & machinery access points.

Many crews integrate LeakSeal repairs alongside Concrete Repair & Restoration, Protective Arm Sleeves, Anchors & Wall Plugs, or Workbenches depending on the scale of the leak & access conditions.

Support is always available when substrate type or leak behaviour requires technical guidance. Trade support Solutions helps specify the correct coating or reinforcement, while On-site & workshop Services assist with complex sealing jobs or prep assessment.

► Flexible membrane that absorbs movement without cracking
► Watertight barrier for metal, masonry, plastic & timber
► Strong adhesion across irregular or porous surfaces
► Fast-drying solutions ideal for emergency or scheduled repairs

Stop Leaks Before They Become Expensive Problems

Rust-Oleum LeakSeal Paints give crews a reliable, flexible sealing system that shuts down moisture intrusion & helps protect assets from long-term water damage.

Frequently Asked Questions

Yes. It bonds well to textured, uneven or irregular surfaces when cleaned before application.

It can. The rubberized membrane flexes with the substrate instead of cracking.

Absolutely. It’s formulated for strong adhesion across varied construction materials.

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Rust-Oleum

Rust-Oleum