Description

🔥 Grey Concrete Crack Sealant, Waterproof Concrete Filler for Wall and Road Repairs

Our upgraded grey concrete sealant is an essential material for repairing damaged concrete surfaces in both industrial and residential applications. It’s a thick grey repair agent with high bond strength, permanent waterproofing, crack resistance, and weather resistance. It perfectly fills expansion joints, concrete cracks, floor cracks, wall fissures, and pavement damage. No complicated mixing required, easy extrusion application, and widely used for garage floors, patio pavements, building walls, basements, and engineered concrete repairs. One bag solves all your concrete crack sealing problems.

✨ Superior Product Features

High Bond Strength and Durable Grey Substrate

The premium grey filler bonds tightly to concrete, cement, stone, and mortar surfaces. Once fully cured, it forms a hard, elastic layer that won’t peel or flake off even under long-term pressure and vibration. The uniform grey tone blends naturally with the original concrete color, leaving no visible repair marks.

100% Waterproof and Seepage-Proof Barrier

The dense, cured layer completely blocks rainwater, ground moisture, and seepage. Effectively prevents water seepage into basement walls, terrace concrete slabs, and outdoor pavement joints, making it ideal for sealing areas prone to prolonged dampness.

Weather-Resistant and Crack-Resistant Elastic Formula

It possesses strong anti-aging properties, resisting extreme high and low temperatures, UV radiation, and seasonal temperature changes. It maintains proper elasticity year-round, preventing secondary cracking caused by the thermal expansion and contraction of concrete.

Single-Component, Easy-to-Extrude Application

The ready-to-use pouch design eliminates the need for mixing calculations or additional mixing tools. Simply load it into a standard caulking gun, squeeze, and smooth. Even beginners can efficiently complete repairs without professional skills.

Two Sizes Available to Meet Different Application Needs

The 350ml small package is suitable for narrow cracks, localized repairs, and small home maintenance; the 500ml large package is suitable for wide expansion joints, large pavement areas, and large-area repairs.

📌 Wide Range of Applications

This multi-purpose concrete sealant is suitable for all indoor and outdoor concrete repair scenarios:

Outdoor Road Repair: Fills driveway cracks, patio concrete gaps, sidewalk expansion joints, and parking lot floor gaps.

Building Wall Sealing: Seals basement wall leaks and cracks, exterior wall concrete gaps, and foundation cement joints.

Balcony and Terrace Waterproofing: Repairs terrace concrete cracks, leaking balcony floor joints, and gaps between walls and floors.

Construction Cement Maintenance: Fills small gaps, seals stone wall joints, and repairs cement staircase cracks.

Indoor Garage Use: Repairs garage concrete floor cracks and seals storage room cement wall gaps.

Home Renovation: Fills small cracks in concrete steps, garden slab gaps, and drain joints.

📋 Product Specifications

Material: Elastic polyurethane concrete sealant, gray core

Color: Solid gray

Net Content: 350ml/500ml

Key Features: Strong adhesion, waterproof, weather-resistant, elastic and crack-resistant, single-component, easy to extrude, gray color matches concrete tones

Suitable Surfaces: Concrete, cement mortar, stone, gypsum board, brick walls, hard road surfaces

⚠️ Pre-use Instructions

1. Thoroughly clean the crack surface before application, removing loose cement debris, dust, oil stains, and standing water.

2. Cracks deeper than 1 cm should be filled with foam backing strips first to save adhesive and improve sealing effect.

3. Keep the application environment dry and avoid application in rainy or continuously humid weather.

4. To ensure stable sealing performance, please wait for complete curing (24-48 hours) before stepping on or contacting water.

5. After use, please seal the product and store it in a cool, dry place, avoiding high temperatures and direct sunlight.

🤝 Why Choose Our Grey Concrete Crack Sealant?

We are a professional manufacturer of building repair adhesives with a stable supply of raw materials. Each bag undergoes waterproofing, tensile testing, and color consistency quality testing before shipment.

✅ Two capacity options: 350ml/500ml, meeting the needs of small-scale home repairs and large-scale project repairs.

✅ Natural grey core, matching the original concrete color for an invisible repair effect.

✅ High-elasticity, crack-resistant formula, adapting to the thermal expansion and contraction of concrete pavements.

✅ Single-component cartridge packaging, compatible with standard manual caulking guns, easy to use.

✅ Leak-proof sealed tube packaging, preventing leakage during long-distance cross-border transportation.