If you've looked into penetrating concrete waterproofing systems, you've likely come across both DualGuard and VersaGuard from Protocol Environmental Solutions. They're made by the same BC-based manufacturer, use the same patented InnerCrete membrane technology, and both permanently waterproof concrete from the inside out. But they are not interchangeable — and using the wrong one can create a real problem on your project.
Here is a clear explanation of what makes them different and when to use each one.
What They Have in Common
Both VersaGuard and DualGuard penetrate 1–4mm into the concrete matrix and chemically react with the calcium silicate in the concrete to create a permanent internal hydrophobic membrane. Both stop water and chloride penetration. Both work on horizontal and vertical surfaces, above and below grade, interior and exterior. Both are applied by low-pressure sprayer after WashAway Xtreme surface preparation. Both can be applied to damp or dry concrete.
At the surface level, both products look identical after application — no visible change to the concrete.
The Critical Difference: What Happens After Application
This is where they diverge, and it matters significantly depending on your project scope.
DualGuard creates a permanent internal waterproof membrane AND a semi-sacrificial surface repellent layer. The internal waterproofing is permanent. The surface repellent layer gradually wears away with traffic and weathering over time — this is by design for surfaces that will remain bare and exposed. However, because of this surface repellent, DualGuard is not compatible with subsequent painting, coating, or sealing immediately after application. If you apply a coating on top of DualGuard, adhesion will be compromised.
VersaGuard creates the same permanent internal waterproof membrane but without the surface repellent layer. It maintains the surface profile of the concrete exactly as-is, which means coatings, paints, and sealants can be applied with full adhesion immediately after treatment. VersaGuard is specifically designed for applications where a subsequent topical product will be applied on top.
The Practical Application Guide
Use DualGuard when:
- The concrete surface will remain bare after treatment — no coating, paint, or sealer
- Parkade columns, walls, and bare concrete maintenance areas
- Retaining walls, transit infrastructure, exterior building concrete
- Driveways and exterior plazas that will not be coated
- Efflorescence treatment on bare concrete masonry
Use VersaGuard when:
- A coating, paint, or floor system will be applied after waterproofing
- New construction slabs with elevated moisture before epoxy floor installation
- Moisture vapor mitigation before any topical floor covering
- Walls that will be painted after waterproofing
- Any application where coating adhesion on the treated surface is required
Can You Fix It If You Use the Wrong One?
Yes, but it requires additional work. If DualGuard has been applied and you subsequently need to paint or coat the surface, the surface repellent layer needs to be removed using WashAway Xtreme before the topical product is applied. The internal waterproofing of the concrete is permanent and unaffected — only the surface layer needs to be addressed. It's an additional step, but the permanent waterproofing is not lost.
If you're planning your project in advance and know a coating will follow — specify VersaGuard from the start and avoid the extra step.