750g Waterproof Silicone Sealant – Heavy-Duty Roof & Wall Crack Repair, Heat & UV Resistant, Outdoor/Indoor Leak-Proof Bonding

Overview

A heavy-duty, fast-drying silicone sealant designed to permanently fix leaks and seal cracks on roofs, walls, metal surfaces, and more. The 750g Waterproof Silicone Sealant forms a flexible, long-lasting protective layer that resists water, heat, UV exposure, and harsh outdoor weather. Ideal for both DIY home repairs and professional construction use.

Key Benefits

• Instant Leak Protection: Quickly seals cracks, gaps, and joints on roofs, walls, gutters, and exterior surfaces.

• All-Weather Performance: Stands up to rain, heat, UV rays, and temperature changes without peeling or cracking.

• Strong Surface Bonding: Works effectively on concrete, galvanized iron, steel, aluminum, and most construction materials.

• Flexible & Durable Layer: Expands and contracts with building materials to prevent future leaks.

• Perfect for DIY or Pros: Easy application and fast drying make it suitable for homeowners and contractors alike.

Common Uses

• Roof Leak Repair: Seal cracks, holes, and joints to stop water infiltration and extend roof lifespan.

• Water Tank & Pipe Repair: Creates a waterproof barrier to prevent water loss and resist corrosion.

• Metal Surface Protection: Ideal for steel, galvanized iron, and aluminum to prevent leakage and rust.

• Concrete & Wall Crack Filling: Stops moisture penetration in walls, floors, basements, and foundations.

• Outdoor & Indoor Applications: Suitable for roofs, gutters, bathrooms, kitchens, and utility areas.

How to Use

1. Clean the area, removing dust, oil, rust, and moisture.

2. Apply the sealant evenly over cracks or joints (use a caulk gun for best results).

3. Let it dry; surface dries fast, full cure within 24 hours.

4. Apply a second layer for larger gaps.

Specifications

• Capacity: 750g/26.5 oz

• Type: Silicone-based waterproof sealant

• Finish: Clear, flexible protective layer

• Suitable for: Concrete, metals, roofs, walls, plastic, PVC, and more

Why Customers Choose It

Reliable performance for emergency leak repairs, long-term sealing, and outdoor durability. Designed to withstand tough weather conditions without cracking, breaking, or peeling.

Why Buy From Us

• Tested for Quality & Performance: Every batch is inspected to ensure strong adhesion, long-term durability, and consistent waterproof protection.

• Fast & Reliable Shipping: Orders are processed quickly with tracked delivery to ensure your repair materials arrive on time.

• Dedicated Customer Support: Our team is ready to help with product guidance, usage instructions, and post-purchase support.

Get your leak repair done right — order now.