Quick answer: Damp-proofing stops water vapour from passing through walls and floors (used on rising damp, condensation, soil vapour). Waterproofing stops liquid water from passing through under direct pressure (used on roofs, parapets, below-ground walls, bathrooms). Both are needed on most SA homes — different products for different jobs.
Damp-proofing
Damp-proofing creates a barrier that blocks water vapour from moving through a building's walls, floors or roof. It addresses:
- Condensation buildup on cold internal walls.
- Vapour rising from damp soil into ground-floor walls (where the DPC is failing).
- Vapour driven by humidity differentials between inside and outside.
The Rhinoluxe damp-proofing tools are Shield Indoor (interior vapour-resistant base coat) and properly maintained DPC layers in the wall structure. Paint alone cannot fix structural rising damp — but Shield Indoor over a treated wall blocks residual vapour and stops the staining / peeling cycle.
Waterproofing
Waterproofing creates a barrier that blocks liquid water from passing through under direct pressure. It addresses:
- Driving rain on exposed exterior walls.
- Standing water on flat roofs, parapets and balconies.
- Splash and spill in bathrooms and kitchens.
- Below-ground walls in basements and retaining structures.
The Rhinoluxe waterproofing range covers most of these: Shield Exterior for walls, Roof Coat for tiled and metal roofs, Fiber Coat for parapets and flexible joints, and waterproof membrane systems for below-ground work.
Quick comparison
| Damp-proofing | Waterproofing | |
|---|---|---|
| Blocks | Water vapour | Liquid water under pressure |
| Used on | Interior walls, floors near DPC, condensation-prone walls | Roofs, parapets, exterior walls, below-ground |
| Rhinoluxe product | Shield Indoor | Shield Exterior, Roof Coat, Fiber Coat |
| Cures issue? | Blocks vapour but won't fix failed DPC | Blocks water but won't fix structural cracks |
When you need both
Most SA homes need both — waterproofing on exposed exterior walls and roofs, damp-proofing on internal cold-spot walls and bathrooms. The two systems work together: Shield Exterior keeps liquid water out of the wall, Shield Indoor stops residual vapour from staining the internal finish.
What neither paint system can fix
- A failed or absent DPC — requires injection or structural repair.
- Structural cracks wider than ~1mm — require flexible filler first.
- Poor roof flashings, blocked gutters, broken weep holes.
- Below-ground walls without a separate waterproof membrane layer.
For a deeper look at SA damp diagnosis, see how to identify and fix damp walls.
Where to buy
Order Rhinoluxe waterproofing paints at rhinoluxe.co.za with national delivery, or visit our paint shops at 143 Blaauwberg Road, Table View, Cape Town or 5a Betschana Road, Sebenza, Edenvale, Johannesburg. For trade pricing on bulk orders, call +27 84 985 6141.
