Dulux Aquatech Interior & Exterior Crackfiller

Key information

Repair damaged walls with confidence using Dulux Aquatech Crack Filler, a premium crack repair solution designed for both interior and exterior surfaces. Available at Dulux Newtown, your trusted authorized Dulux dealer in New Town, Kolkata, this advanced crack filler is powered by UniBond Technology, providing exceptional bonding strength, long-lasting durability, and a smooth professional finish.

Unlike ordinary crack fillers, Dulux Aquatech Crack Filler repairs cracks up to 20 mm wide in a single application, reducing labour time and eliminating the need for repeated filling. Its shrink-free formulation ensures the repaired area remains stable without developing gaps after drying, while the flexible composition accommodates minor structural movements to help prevent future cracking.

The fast-drying, high-strength formula becomes tough enough to accept nails and screws within 4–6 hours, making it ideal for repairing wall cracks around windows, doors, ceilings, plaster surfaces, concrete walls, masonry, and exterior facades. Whether you're repairing hairline cracks or wider structural surface cracks, Dulux Aquatech Crack Filler delivers a durable repair that creates the perfect base for primer and paint.

If you're searching for the best wall crack filler in Kolkata, premium crack repair compound, or a professional crack filling solution in New Town, Dulux Aquatech Crack Filler offers superior adhesion, excellent durability, and long-lasting wall protection.

Begin by widening the crack into a V-shaped groove to improve penetration and bonding. Remove all loose plaster, putty, dust, grease, fungus, algae, and flaking paint using a wire brush or stiff brush. If fungal growth is present, treat the surface with Dulux Aquatech Exterior Pre Treatment Coat before filling. For chalky surfaces, apply the appropriate Dulux Acrylic Primer after cleaning to ensure proper adhesion.

Select the correct crack filler according to the crack width. Use the 5 mm Crack Filler for hairline cracks, the 10 mm Crack Filler for cracks around doors and window frames, and the 20 mm Crack Filler for deep or widened cracks. Apply the filler firmly with a putty knife, ensuring complete penetration without leaving air pockets. Smooth the surface evenly and remove excess material using a damp sponge once the filler becomes touch dry.

Allow the repaired area to dry for approximately 4–6 hours before sanding lightly or applying primer and paint. Protect the repaired surface from rain and moisture until fully cured. Clean all application tools with warm water immediately after use for easy maintenance.

At Dulux Newtown, we recommend following proper safety precautions during crack repair applications. Avoid dry sanding, burning, or scraping old paint films, as these activities may generate hazardous dust and harmful fumes. Whenever possible, use wet sanding methods to minimize airborne particles and maintain a safer working environment.

Always work in a well-ventilated area while wearing appropriate personal protective equipment, including gloves, safety glasses, and a dust mask. Avoid direct contact with skin and eyes, and wash thoroughly after handling the product. Keep the container tightly closed, store it in a cool and dry place, and keep it out of reach of children.

For complete handling instructions, product specifications, and safety recommendations, please refer to the official Safety Data Sheet (SDS) available at Dulux Newtown. Following the recommended application process and safety guidelines will ensure durable crack repairs, excellent paint adhesion, and long-lasting protection for your interior and exterior walls.