ICI Dulux Aquashield Flexible Waterproof Basecoat — Exterior Waterproofing in Karachi
ICI Dulux Aquashield Flexible Waterproof Basecoat is a flexible exterior waterproof basecoat that accommodates surface movement and thermal expansion. Available at Saify Paint House, your authorized ICI Dulux Paints dealer in Karachi since 1999, it is formulated for exterior walls and surfaces exposed directly to weather.
Part of the complete Aquashield system, it addresses the specific challenge exterior waterproofing faces that interior waterproofing does not: constant movement in the substrate beneath the coating.
Why Flexibility Is Non-Negotiable on Exterior Waterproofing
Exterior walls move continuously. Daily temperature swings of fifteen degrees or more expand and contract masonry throughout the year, and Karachi’s monsoon humidity adds further dimensional change as walls absorb and release moisture.
A rigid waterproof coating cannot survive that movement. As the wall expands and contracts beneath it, a rigid film eventually cracks along the lines of greatest stress — and once it cracks, water finds its way through exactly the failure point the coating was meant to prevent. This is the most common reason exterior waterproofing systems fail within a year or two of application.
A flexible basecoat solves this by moving with the substrate rather than against it. The film stretches and relaxes as the wall expands and contracts, maintaining an unbroken barrier through the full range of thermal and moisture-driven movement the exterior experiences.
This matters most on surfaces with the greatest exposure — south and west-facing walls that experience the largest daily temperature swings, parapets and terraces exposed on multiple sides, and any exterior surface where monsoon rain drives directly against the coating for extended periods.
Combined with a crack-bridging topcoat like ICI Dulux Weathershield Powerflexx where decorative finish is also needed, this flexible basecoat gives exterior walls genuine, layered protection against both water ingress and the movement that defeats rigid systems.
ICI Dulux is backed by AkzoNobel, a global leader in paints and coatings with over 200 years of innovation. Full technical specifications for this product are available on the official Dulux Pakistan website.
Key Features
- Flexible film — Moves with the wall through thermal expansion and contraction
- Accommodates surface movement — Maintains an unbroken waterproof barrier
- Formulated for exterior exposure — Built for direct weather contact
- Resists cracking — Avoids the failure mode of rigid waterproof coatings
- Part of a complete system — Works with Aquashield Pre Treatment Coat
- Long-lasting protection — Durable through repeated seasonal cycles
- Suitable for high-exposure surfaces — Parapets, terraces, and exposed facades
- Compatible with decorative topcoats — Can be finished with exterior emulsion
Recommended Applications
ICI Dulux Aquashield Flexible Waterproof Basecoat is used on exterior surfaces exposed to weather:
- Exterior walls facing direct rain and sun exposure
- Parapets and terrace walls
- South and west-facing facades with high thermal movement
- Boundary walls exposed on multiple sides
- Exterior surfaces with a history of seepage
- Any exterior wall ahead of a decorative exterior topcoat
Suitable for exterior concrete, cement render, and masonry surfaces in sound condition.
Surface Preparation & Application
The surface must be clean, dry, and free from dust, loose material, chalking, oil, grease, and algae or fungal growth. Exterior surfaces exposed to weather often need thorough washing to remove accumulated atmospheric grime before treatment begins.
Apply ICI Dulux Aquashield Pre Treatment Coat first and allow it to dry fully. Skipping this stage on exterior work is a common cause of early adhesion failure, particularly on older or weathered walls.
Repair structural cracks before waterproofing. This flexible basecoat accommodates ongoing thermal movement — it does not repair existing structural damage, which needs proper investigation and repair first.
Stir thoroughly before use. Apply by brush or roller, following the coverage rate and number of coats specified on the product label. Avoid application in direct midday sun or when rain is expected during drying. Allow full drying between coats and before applying any decorative topcoat.
Completing the Aquashield System
Flexible Waterproof Basecoat is one part of a complete exterior waterproofing sequence.
Always begin with ICI Dulux Aquashield Pre Treatment Coat to seal and prepare the surface.
For roofs, follow with ICI Dulux Aquashield Waterproof Roofcoat. For interior wet areas, ICI Dulux Aquashield Interior Waterproof Basecoat addresses the equivalent problem indoors.
Once waterproofed, finish exterior walls with ICI Dulux Weathershield Powerflexx for combined waterproofing and crack-bridging protection.
Buy ICI Dulux Aquashield Flexible Waterproof Basecoat in Karachi
ICI Dulux Aquashield Flexible Waterproof Basecoat is available at both Saify Paint House locations in DHA Karachi — Shop #2, Plot 31-E, 7th Street, Badar Commercial, DHA Phase 5, and Shop #2, Al Raheem Center, Main Gizri, opposite Mubarak Masjid. As an authorized ICI Dulux Paints dealer in Karachi, we stock the complete Aquashield range with immediate availability.
Our team can assess your exterior surfaces, recommend the right Aquashield system, and estimate quantities for your project. For pricing across all pack sizes, bulk rates for contractors and developers, or expert advice, message us on WhatsApp or call 0333-5843610.
