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#1 Rated Waterproof Sealant in the UK

Stop Leaks Before They Cause Costly Damage

LeakLock™ creates a durable waterproof barrier that seals cracks, prevents water infiltration, and protects your home — in minutes.

Get LeakLock™ Today
4.8· 12,400+ reviews
  • Waterproof Protection
  • Works On Multiple Surfaces
  • Long-Lasting Seal
  • Easy DIY Application
LeakLock Waterproof Sealant — tub with brush applicator
Trusted by UK Homeowners
As Featured InHomes & GardensIdeal HomeWhich? DIYThe Telegraph Home
The Hidden Threat

A Small Leak Today Can Become Thousands In Repairs Tomorrow

The average escape-of-water insurance claim in the UK costs over £7,500. One small crack ignored today can ruin plaster, insulation, flooring — and your peace of mind.

Roof Leaks

Damaged shingles letting water in.

Wall Cracks

Hairline cracks widening over time.

Water Infiltration

Moisture seeping through walls.

Concrete Damage

Cracked driveways and foundations.

Damaged Gutters

Rust, joints and seam failures.

Exterior Deterioration

Weather wearing down surfaces.

Before and after roof leak repair with LeakLock
How It Works

Seal. Protect. Forget.

Three simple steps. No contractor required.

01

Clean The Surface

Wipe down the area so it's free of dust and loose debris.

02

Apply LeakLock™

Brush the sealant paste directly onto the leak, crack, or seam.

03

Instant Waterproof Barrier

Forms a flexible, weather-resistant seal in minutes.

Why It Works

Why Homeowners Choose LeakLock™

Stops Leaks Instantly

Active seal forms on contact.

Waterproof & Weather-Resistant

Built for rain, snow, and storms.

Flexible Anti-Crack Technology

Expands and contracts with temperature.

UV Resistant

Won't break down in direct sunlight.

Universal Surface Compatibility

Roofs, walls, concrete, metal, wood, gutters.

Easy DIY Application

No specialized tools or training needed.

Long-Lasting Protection

Years of durable, dependable defense.

Saves Thousands In Repairs

Prevent costly water damage now.

See The Difference

With LeakLock™ vs. Without

Without LeakLock™
  • Water infiltration
  • Mold and mildew growth
  • Structural damage
  • Costly emergency repairs
With LeakLock™
  • Waterproof protection
  • Crack sealing technology
  • Long-lasting defense
  • Total peace of mind
Applying LeakLock waterproof sealant to a cracked wall
Real Results

Trusted By Thousands Of Homeowners

4.8 / 5from 12,400+ verified reviews

"Fixed a roof leak in less than 10 minutes. Saved me a costly repair."

MR
Michael R.
Verified Buyer · Dallas, TX
Verified

"Worked exactly as advertised. Completely sealed the crack in my garage wall."

LS
Linda S.
Verified Buyer · Tampa, FL
Verified

"Easy to apply and survived multiple heavy rainstorms. Highly recommend."

GT
Greg T.
Verified Buyer · Columbus, OH
Verified
Versatile Protection

Works On Virtually Any Surface

Roofs
Concrete
Brick
Metal
Gutters
Walls
Foundations
Outdoor Structures
Special Offer

Protect Your Home Today

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30-Day Satisfaction Guarantee

Try LeakLock™ risk-free. If you're not completely satisfied within 30 days of receiving your order, contact us for a full, no-questions-asked refund. We stand behind every tub.

Got Questions?

Frequently Asked Questions

Once cured, LeakLock™ forms a long-lasting waterproof seal that holds up for years under normal weather conditions, including rain, snow and sun exposure.
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