Description
Mapelastic Smart is a two-component, high-flexibility cementitious membrane built for waterproofing balconies, terraces, bathrooms and swimming pools, and for protecting concrete structures against cracking. Its flexibility is the standout figure: a 2mm film carries crack-bridging capacity greater than 2mm itself, backed by 170% elongation at failure to Class II of AS/NZS 4858, genuinely high performance for a cementitious (rather than purely liquid or sheet) membrane.
Beyond wet-area waterproofing, it’s also used to protect concrete pillars, beams and viaducts repaired with Mapegrout or Planitop products against carbon dioxide penetration, and concrete exposed to sea water, de-icing salts or sulphates — genuine infrastructure-grade protection, not just a residential wet-area product. It can also be applied directly over existing tiles, which matters for renovation jobs where stripping back to substrate isn’t practical.
Technical Specifications
| Consistency | Component A: powder, grey; Component B: liquid, white |
|---|---|
| Mixing ratio | Component A : Component B = 2 : 1 |
| Application temperature range | +8°C to +40°C |
| Pot life of mix | 1 hour |
| Crack-bridging capacity | >2mm at 2mm film thickness |
| Elongation at failure | 170% (Class II, AS/NZS 4858) |
| Consumption (trowel/roller) | Approx. 1.6 kg/m² per mm thickness |
| Consumption (spray) | Approx. 2.2 kg/m² per mm thickness |
| Packaging | 30kg kit: 20kg component A + 10kg component B (yield 18.75L) |
| Compliance | EN 1504-2, EN 14891 (CM01P) |
Where to Use
- Waterproofing bathrooms, showers, balconies, terraces and swimming pools before tiling
- Hydraulic channels, dam faces, basins and storage tanks, including potable water
- Protecting cracked cementitious renders and concrete against moisture and carbon dioxide infiltration
- Concrete exposed to sea water, de-icing salts or sulphates
How to Apply
- Mix — combine Component A and Component B at a 2:1 ratio to a fluid, brushable consistency.
- Apply the first coat — by trowel, roller or spray gun; embed Mapetex Sel or Mapenet 150 reinforcement on stressed or cracked substrates.
- Apply as at least two even coats — maintain the minimum final dry film thickness required for the application.
- Allow to cure — respect the pot life (1 hour) and avoid disturbing the membrane while curing.
Important Notes
- Component A stores for up to 12 months, Component B for up to 24 months, both in original sealed packaging in a dry place at +5°C or above.
- Wash tools with water before the mortar sets; once set, cleaning is mechanical only.
- For professional use only.
The gap between a rigid waterproofing membrane and one that’s rated for real substrate movement matters most on exactly the surfaces Mapelastic Smart targets — balconies and terraces exposed to thermal cycling, and pool surrounds subject to constant wetting and drying. A membrane without genuine crack-bridging capacity can waterproof a substrate perfectly on the day it’s applied and still fail within a year once seasonal expansion and contraction opens hairline cracks the membrane can’t stretch to cover. At 170% elongation, Mapelastic Smart is built to keep moving with the substrate rather than being the first thing to crack.
