Description
UltraTile ProAqua Shield is a high-performance, one-coat tanking kit designed to deliver reliable waterproof protection to walls and floors before tiling. Suitable for commercial environments, wet rooms, domestic bathrooms, kitchens and showers, ProAqua Shield combines a flexible waterproof coating with integrated membrane tape for reinforcing vulnerable joints and junctions — giving tilers a fast, single-coat route to a fully tanked, tile-ready surface.
Key Benefits
Unlike multi-coat tanking systems, ProAqua Shield is designed for rapid, single-coat application with no priming required, meaning tiling can commence in as little as 90 minutes. This significantly reduces programme time on wetroom and bathroom installations while still delivering robust, long-term protection against water damage and moisture ingress in the areas most prone to it.
Applications
Ideal for wet rooms, showers, domestic bathrooms, kitchens, utility and laundry rooms, communal showers, steam rooms and saunas. Suitable for both walls and floors prior to tiling, and compatible with a wide range of substrates including concrete, sand/cement screed, plywood, tile backer boards, anhydrite screeds, plaster, plasterboard, render, brickwork and blockwork.
Performance & Features
- Single-coat application — no priming required
- Tiling can commence after just 90 minutes
- Includes 10 metres of membrane tape for junction reinforcement
- Blue coloured coating for easy visual coverage checking
- Manufactured under BS EN ISO 9001, ISO 14001 and ISO 45001
- Aligns with BS EN 5385 tiling installation guidelines
Compatibility
Recommended for use with UltraTile ProSS Flex (C2), ProFlex SP Rapid Set (S1) or ProFlex S2 fibre-reinforced flexible tile adhesives once fully cured. Pair with UltraTile ProPrimer on suitable substrates for a complete, specification-backed wetroom build-up.
Millcot supplies genuine UltraTile trade products with full technical and safety datasheets, backed by knowledgeable trade support — helping you specify and install with confidence.
Key Features
- One-coat tanking system for walls and floors
- Rapid drying — tile within 90 minutes
- Integrated 10m membrane tape included
- Suitable for commercial and domestic wet areas
- No priming required on most substrates
- Reinforces vulnerable joints, corners and upstands
Applications
- Wetroom and shower floor and wall tanking
- Domestic bathroom waterproofing before tiling
- Kitchen splashback and floor waterproofing
- Utility and laundry room waterproofing
- Communal shower, steam room and sauna tanking
- Commercial wet area waterproofing
Technical Specifications
- Unit size: 9kg (coating + 10m membrane tape)
- Colour: Blue
- Coverage: 1.1kg per m² per coat — approximately 8m² per 9kg unit
- Application thickness: Minimum 0.8mm
- Drying/tiling time: 90 minutes (extends below 20°C)
- Application temperature: 5°C to 30°C
- Storage temperature: 5°C to 30°C, frost-free
- Shelf life: 12 months unopened
Timings and coverage vary with temperature, substrate porosity and site conditions. Refer to the full technical datasheet before specifying.
What's Included
Each 9kg unit of ProAqua Shield includes the flexible waterproof coating plus 10 metres of membrane tape for reinforcing joints, corners and upstands.
FAQs
How long before I can tile over ProAqua Shield?
Tiling can typically commence after 90 minutes, though this extends in temperatures below 20°C.
Do I need to tank the shower tray as well as the walls?
Tanking the shower tray is strongly recommended alongside the walls and floor, though not always a strict requirement — check local building regulations for your installation.
Is ProAqua Shield suitable for use with all tile adhesives?
Dispersion (ready-mixed) adhesives can significantly extend drying times or prevent complete curing depending on tile type — cement-based flexible adhesives such as UltraTile ProFlex are recommended.
What substrates is ProAqua Shield suitable for?
Concrete, sand/cement screed, plywood (15mm+), tile backer boards, anhydrite screeds, firm plaster, plasterboard, render, new brickwork and blockwork, once properly prepared.
Is a primer needed before applying ProAqua Shield?
No priming is required on most suitable, sound substrates prepared in line with the technical datasheet.
How much area does one unit cover?
Each 9kg unit covers approximately 8m² at the recommended coverage rate of 1.1kg per m².