Sealtek
HydroFlex – Flexible Acrylic Waterproofing Coating
HydroFlex – Flexible Acrylic Waterproofing Coating
Couldn't load pickup availability
HydroFlex is a highly flexible, seamless acrylic waterproofing coating ideal for metal and tiled roofs.
With up to 450% elongation, it protects joints, overlaps, and complex surfaces with long-lasting UV-stable performance.
Share
Looking to Buy in Bulk or Request a Custom Quote?
We work closely with contractors, applicators, and businesses who need more than just a few litres.
Whether you're:
- Ordering in bulk
- Looking for custom colours
- Interested in becoming an approved applicator
- Or sourcing product for a large-scale project
We’re here to help.
Looking to Buy in Bulk or Request a Custom Quote?
We work closely with contractors, applicators, and businesses who need more than just a few litres.
Whether you're:
- Ordering in bulk
- Looking for custom colours
- Interested in becoming an approved applicator
- Or sourcing product for a large-scale project
We’re here to help.
All You Need To Know
What's included
- HydroFlex Coating (Available in 5L and 20L sizes)
- Primer not included: Use Repellam or AquaTint for cementitious surfaces
Key Features
- Pure acrylic and water-based
- Seamless and torch-free application
- Extremely flexible (up to 450% elongation)
- UV-stable and long-lasting
- Suitable for IBR, corrugated metal, tiled roofs, flashings and parapets
- Easy brush, roller, or spray-on application
Application And Coverage
Waterproofing (4-coat system)
- ±10–25 m² per 20L (depending on surface)
- Final membrane build: ±2000µ
- 4 coats recommended for waterproofing
Paint Coating (2-coat system)
- ±40–60 m² per 20L
- Build: ±800–1000µ
- Note: Water-resistant only (not waterproof)
Drying & Curing:
- Touch dry: 1–2 hours @ 25°C
- Fully cured: 7 days
Surface Preparation
- Remove all old coatings and contaminants (salt, fungi, algae, oil, etc.)
- Ensure surface is completely dry (moisture <10%)
- Prime cementitious surfaces with Repellam or AquaTint (dry ~1hr)
- No primer needed on metal surfaces
- Application temp: 5–35°C
Colour Options
Standard: Grey, White, Black, Terracotta, Green
Custom: Available in 90+ colours on request (MOQ applies)
Technical Data
- Form: Liquid | pH: 8.92 | SG: 1.21
- Viscosity: 98–102 KU
- TSC: 49% | Solubility: Water-based
- Abrasion Resistance: >10,000 cycles
- QUV (5000 hrs): Slight fading, no cracking or delamination
- Waterproofing: Pass – no bubbling or lifting
- Lifespan: 10–15 years equivalent (lab-tested)