Bina Flexseal 2000
Two-part flexible cementitious slurry — breathable, bondable under tiles and screeds, ideal for wet areas and tanks.
Bina Flexseal 2000
Bina Flexseal 2000 is a two-component flexible polymer-modified cementitious coating designed to seal the micro-porous capillaries in concrete. It forms a breathable membrane — letting water vapour escape while staying impermeable to water — with excellent adhesion to the substrate. Because it is cementitious and bondable, it can be tiled or screeded over, making it the standard choice for bathrooms, wet areas, water tanks and basements (applied to the positive, water-facing side).
Best for:
- Bathrooms, toilets & wet areas
- Water tanks & reservoirs
- Swimming pools
- Basements & foundation slabs
- RC gutters, roofs & wall renderings
- Under tiles & screeds
Why specify Bina Flexseal 2000
Flexible & crack-accommodating
Breathable (vapour out, water-tight)
Excellent substrate adhesion
Seamless & jointless
Unaffected by UV
Tile- and screed-able
Application method
01
Ensure concrete is sound and clean; repair cracks/porous areas with Bina N.S. Grout.
02
Pre-soak the surface with water (no ponding) and apply SBR latex as a primer coat.
03
Mix part A and part B to a homogeneous, lump-free slurry — do NOT add water.
04
Apply 1 kg/m² first coat (brush, rubbed in); after ~8 hr apply a second 1 kg/m² coat in cross direction.
The numbers, straight from the datasheet
Real manufacturer data. Download the full TDS on the downloads page.
| Components / mixing ratio | Two · 1 part A (20kg) : 1 part B (10kg) |
|---|---|
| Pot life (28°C) | 60 min |
| Compressive strength | 9 N/mm² (2d) · 35 N/mm² (28d) |
| Tensile strength (ASTM C-190) | 1.89 N/mm² (72h) · 3.65 N/mm² (28d) |
| Flexural strength (ASTM C-580) | 3.30 N/mm² (7d) |
| Permeability (CRD-C 48-55, 7d) | 1.9 × 10⁻⁸ cm/sec (2 coats) |
| Hardness (Shore A) | 75–80 |
| Bonding (pull-out, 28d) | 3.2 (C) |
| Coverage | 1 kg/m² per coat · 2 coats |
| Application side | Positive (water-facing) side |
Trusted on real waterproofing projects
Bina-manufactured systems, applied by our own teams on roofs, tanks and structures across Malaysia.
Pools & water-retaining structures
Bina-manufactured, Bina-applied
Waterproofed institutional roof
Bina-manufactured, Bina-applied
Institutional building, sealed roof
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Learn more →Get a quote for Bina Flexseal 2000
Tell us your surface, area and site condition — we’ll confirm this is the right system and quote design, supply and application.