Betonit Products
SealCrete Crystalline
Moisture-activated waterproofing for concrete
Waterproofing that works from inside the concrete — water-activated crystals grow into the pores and voids, permanently blocking the paths water would take.
Use it for
- Water-retaining structures: tanks, pools, ponds, reservoirs, cisterns
- Tunnels, bridges, dams, and sewage structures
- Non-retaining areas: basements, firewalls, roof decks, parking
- Where the waterproofing must survive later construction work
Why this one
- Becomes part of the concrete
Water-activated needle-like crystals fill pores and voids rather than coating the surface - Self-healing
Reactivates on contact with water to seal hairline cracks up to 0.4 mm - Still breathes
Concrete is waterproofed but water vapour can still pass through - Works from either side
Blocks the capillaries, so it resists both positive and negative pressure - Survives site damage
No membrane to puncture during following trades - Simple to mix
0.36 water to powder — roughly 1 part water to 3 parts material
Available in
4.5 kg bagFor smaller areas and patch work
18.5 kg bagFor tanks, pools, and larger structures
At a glance
TypeCrystalline cementitious waterproofing
ColourGray
FinishRigid, slightly rough
Water ratio0.36 — 1 water : 3 material
Pot life1–2 hours
Shelf life12 months, cool and dry
