Sika SikaTop-540 Seal Drinking Water Tank Waterproofing Mortar
SikaTop-540 Seal (formerly MasterSeal 540) is a two-component polymer-cement waterproofing slurry comprising a liquid polymer (Part A) and a premixed powder (Part B). Once mixed it forms a brushable, smooth slurry with excellent adhesion to most substrates, combining rigidity and elasticity. The product holds drinking water contact certification (Bureau Veritas) and passes BS 476: Part 7: 1971 Class 1 surface spread of flame.
| Packaging | 36 kg / set |
|---|---|
| Colour | Grey |
| Coverage | Approx. 120 sq.ft (two coats) / 36 kg (Actual coverage varies with substrate conditions and application thickness) |
Applications
- Interior and exterior concrete substrates (e.g. water tanks, basement walls, terraces)
Advantages
- Strong adhesion
- Elastic and crack-resistant — bridges cracks up to 0.3 mm wide
- Waterproof yet breathable — effectively blocks liquid water
- Environmentally friendly and non-toxic