Basement
WaterproofingTANK · SEAL · RESIST PRESSURE
A pressure-resistant tanking system for below-ground structures — crystalline and cementitious layers that seal concrete against the constant hydrostatic push of groundwater, defeating rising damp, seepage and water-table pressure on both positive and negative faces.
What is Basement Waterproofing?
Basement waterproofing is a below-ground tanking system that seals a structure against the constant pressure of groundwater pushing in from the surrounding soil. Unlike a roof, a basement is fought from two directions: water can be held back from the outside (positive side) or driven back from the inside (negative side) once it has reached the wall. POLYZEN combines crystalline technology — which grows into the concrete's capillaries and self-seals hairline cracks — with cementitious tanking coats and reinforced wall-to-floor coving, creating a continuous barrier engineered to resist hydrostatic pressure, rising damp and seepage for the life of the structure.
How the System Is Built
A basement is tanked from the inside out — crystalline into the concrete, cementitious over it, reinforced at the weakest joint. Tap any layer to see its role.
Cementitious Tanking Coat
A polymer-modified cementitious tanking coat is applied over the crystalline layer to form a tough, continuous surface barrier that holds back water even under negative-side pressure. System values: Per TDS.
Engineered & Installed by POLYZEN
Basement waterproofing is delivered as a POLYZEN Applied System — surveyed, designed and installed turnkey by POLYZEN's trained applicators, with crystalline, tanking and joint treatment specified to your water table, pressure and structure.
Engineered Against Pressure
A basement faces water that never drains away — a permanent hydrostatic load from the surrounding water table. POLYZEN's system fights it on two fronts: crystalline chemistry that becomes part of the concrete, and a tanking barrier that resists pressure from either side. Performance is confirmed on the project specification.
System selection, number of coats and joint detailing are specified per water table, pressure head and structural condition. POLYZEN confirms finished values on the project specification and does not publish fabricated figures.
The Application Process
Inspect & Diagnose
Map ingress source and direction, assess water table and pressure, identify positive vs negative-side strategy.
Arrest & Prepare
Plug active leaks, clean to sound concrete, rebate and seal the wall-to-floor cove and all joints.
Tank & Seal
Crystalline slurry into saturated concrete → cementitious tanking coats built up to full system thickness.
Cure & Handover
Controlled moist cure, inspection for dryness, final check and written warranty.
System Specifications
| Property | Detail |
|---|---|
| System Type | Basement Waterproofing (Below-Ground Tanking) |
| Delivery | POLYZEN Applied System (turnkey) |
| Technology | Crystalline + Cementitious Tanking |
| Pressure Resistance | Positive & negative-side hydrostatic |
| Joint Treatment | Reinforced cove fillet + joint / tie-hole sealing |
| Build-Up | Leak Arrest + Cove + Crystalline + Tanking Coats |
| Behaviour | Self-sealing of future hairline cracks |
| Coats / Thickness | Per Project Specification |
Ideal Applications
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Applied & Warranted
Every POLYZEN basement waterproofing system is installed by trained applicators and handed over after a controlled cure, an inspection for dryness and a written system warranty. Warranty terms are confirmed per project scope, water-table pressure and structural condition.
Frequently Asked Questions
Related Waterproofing Systems
Take Back Your Basement.
Get a pressure diagnosis, system recommendation and quote for your below-ground space.