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Leakstopper Waterproof Sealant (300g)

Leakstopper Waterproof Sealant (300g)

Regular price €18,99 EUR
Regular price Sale price €18,99 EUR
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  • Transparent Dry Finish
  • Flexible Waterproof Barrier
  • Multi-Surface Application
  • Indoor and Outdoor Use
  • Ships in 24h
  • 30-day money-back
  • Free returns
€18,99 EUR

Product details

REPAIR CRACKS IN ONE EASY STEP
  • Provides long-lasting protection against moisture
  • Dries quickly and remains flexible
  • Invisible on most surfaces
  • Can be used on a variety of materials
  • Suitable to use as thin coating and for filling smaller cracks

Volume

The container holds 1 kg of waterproof sealant.

Coverage

One kilogram covers approximately 10–13 m², depending on surface texture, porosity, and application thickness.

Surfaces

Suitable for compatible concrete, metal, ceramic tile, marble, wood, and plastic surfaces.

Finish

The coating appears white after application and becomes transparent as it dries.

Use

Designed for indoor and outdoor waterproofing and maintenance applications.

Composition

The stated composition is modified acrylic acid.

Resistance

The dried coating is designed to resist UV exposure, heat, and cold.

Storage

Keep the container tightly closed in a cool, dry place.

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Customer Reviews

What our customers say

Anna M., 42 ★★★★★
I used it along a tiled balcony joint that let moisture through after heavy rain. Application was manageable, and the transparent finish made the repair much less noticeable.
Daniel R., 35 ★★★★★
I coated a small weathered section around my shed roof flashing. It spread evenly and dried far less visibly than the old patch underneath.
Sophie L., 29 ★★★★☆
I wanted a clear coating for the edge of a shower tile rather than another obvious patch. The white-to-clear change made it easy to see where I had already applied it.
Michael T., 58 ★★★★★
The product adhered well to a cleaned concrete sill outside my basement window. After drying, the treated section looked tidy and did not have a heavy painted appearance.
Elena P., 47 ★★★★★
I applied this around a metal terrace joint where water tended to collect. Preparation took some time, but the finished coating was smooth and discreet.
James W., 63 ★★★★☆
I used it on a wooden garden storage box after cleaning and drying the top seam. The coating followed the joint nicely and did not hide the wood underneath.
01

1. Inspect

Check that the repair area is stable and suitable for coating. Address loose material or significant structural damage before application.

02

2. Clean

Remove dust, grease, dirt, rust flakes, and standing water. Let the surface dry completely.

03

3. Mix

Stir or shake the sealant as appropriate until it has an even consistency.

04

4. Apply

Spread a continuous, even layer over the target area and extend it beyond the affected section.

05

5. Wait

Allow the coating to dry fully without contact with water. It will change from white to transparent during drying.

06

6. Inspect

Check the dried layer for uninterrupted coverage and confirm that the treated area is fully sealed.

Questions, answered

Does it dry clear?

Yes. Leak Stopper appears white immediately after application and becomes transparent as it dries. Final appearance can depend on the applied thickness and drying conditions.

Which surfaces can I seal?

It is suitable for compatible concrete, metal, ceramic tile, marble, wood, and plastic. Test a small, inconspicuous area first when surface compatibility or final appearance is uncertain.

How much area does 1 kg cover?

One kilogram covers approximately 10–13 m². Actual coverage varies with surface porosity, texture, and the thickness of the applied layer.

Can I use it outdoors?

Yes, the sealant is intended for both indoor and outdoor applications. The dried coating is designed to resist UV exposure, heat, and cold.

Can it be applied to a wet surface?

The surface should be clean, dry, stable, and free from standing water before application. Dirt, grease, dust, rust flakes, and loose material may interfere with adhesion.

How long does drying take?

Drying time depends on temperature, humidity, surface type, and application thickness. Keep the treated area away from water until the coating has dried completely and turned transparent.

Can it repair large structural cracks?

Leak Stopper is intended as a waterproof coating for suitable maintenance and sealing tasks. Large, moving, or structural cracks should be assessed and repaired appropriately before applying a surface coating.

How should I store the container?

Store it tightly closed in a cool, dry place. Protect the container from unsuitable temperature conditions and avoid contaminating the remaining product.