LeakSeal 240ml

Rust-Oleum® LeakSeal® Brush is an easy to use, rubberized protective utility coating designed to fill and seal leaks and cracks. It provides a water-tight, flexible seal that prevents moisture penetration, rust and corrosion.

Ideal for

  • Filling large problematic and hard-to-reach areas
  • Metal, aluminium, galvanised metal, PVC, concrete, masonry, asphalt, vinyl siding, fibreglass and more.


  • Great for gutters, roofs, flashing, ductwork, PVC, masonry, concrete and more
  • High build formula that seals leaks and cracks instantly
  • LeakSeal 240ml TDS

Painting Conditions: Use outdoors or in a well-ventilated area indoors. Use when temperature is between 10°C - 29°C and humidity is below 85% to ensure proper drying.

Surface Preparation:
Remove dirt and debris from area to be coated. If necessary, clean area with soap and water, rinse and let dry.

Stir product slowly and carefully DO NOT shake the product. If thinning is necessary, thin material with mineral turps up to 10%. Dip brush slowly into the can (to avoid air bubbles) and apply the product with smooth, light, even coats. Do not brush over areas that are beginning to dry. Best results are achieved with several light coats versus one heavy coat. If applying with a roller, be sure to use a woven nap roller. Test paint in a hidden area first.

Recoat Times:
May recoat when dry, between 30 minutes and 1 hour. Dries thoroughly after 24 hours at 21°C and 50°C relative humidity. Allow for more time at cooler temperatures and higher humidity.

Clean-Up: Clean brush and other tools with mineral turps.