Dana, Cindy and many others recommend Novalora to their friends.

HydroSeal™ Waterproof Silicone Sealant (750 Gms)

Name: HydroSeal™ Waterproof Silicone Sealant (750 Gms)
Brand: Novalora
Price: 20.0 USD
Availability: InStock

~~$40.00 USD~~ $20.00 USD Save 50%

In Stock • Ready to Ship

30-Day Returns • Easy & Hassle-Free

Verified Seller • Trusted on Pinterest

🌸 Seasonal Glow Sale

LIMITED OFFER: Due to high demand during our Seasonal Glow Sale event — Only 8 left in stock!

Stop Leaks Before They Spread

Industrial-Strength Waterproof Protection That Lasts

The "Liquid Rubber" That Armors Your Home Against Leaks

When you have a serious leak, you don't need a delicate touch; you need a heavy-duty barrier. HydroSeal™ is an industrial-strength black sealant paste that brushes on thick and cures into a tough, flexible rubber coating. Think of it as "liquid tire rubber" for your home.

Perfect for roof cracks, broken gutters, joint gaps, and corroded pipes, this black mastic doesn't just cover the damage; it becomes a permanent part of the surface. It stops water dead in its tracks, withstands the blazing Indian summer heat without melting, and stays flexible in winter to prevent re-cracking. It’s the ultimate ugly-but-effective fix for the leaks that matter most.

Key Features

Instant Waterproofing

Creates an immediate barrier against moisture. Ideally meant for dry application, but formulated to resist washout once the surface skin forms.

Superior Adhesion

Sticks aggressively to concrete, brick, metal, PVC, and wood. No primer needed just clean the dust off and apply.

UV Resistant

The black carbon-infused formula absorbs and resists UV radiation, meaning it won't become brittle or chalky even after years of direct sunlight exposure.

Easy Brush/Spatula Application

It can be applied with a stiff brush or a putty knife. Its spreading consistency makes it easy for any DIYer to cover large areas quickly.

The "Gap-Filler" Thickness

Unlike thin liquids that run away, this is a thick, viscous paste. It stays where you put it, allowing you to bridge wide gaps (up to 5mm) and fill deep concrete cracks in a single coat. It’s like putty and paint combined.

Seamless Rubber Skin

Once dried, it forms a seamless, joint-free black membrane. Because there are no seams (like with tape), there are no weak points for water to sneak through. It completely encapsulates the repair area.

Anti-Corrosion Shield

Applied to metal pipes or tin roofs? It acts as a rust inhibitor. The black coating blocks oxygen and moisture, stopping existing rust from spreading and protecting the metal underneath for years.

All-Weather Flex

Rigid sealants crack when your house shifts or temperatures change. RubberArmor™ stays elastic. It stretches with the movement of your building, ensuring the seal remains unbroken even during heavy vibrations or thermal expansion.