Quick answer: Use waterproof paint (Rhinoluxe Shield) on exposed exterior walls, parapets, roofs, bathrooms, kitchens, and any surface that takes direct water or condensation. Use regular pure-acrylic paint (Rhinoluxe Premium Pure Acrylic) for interior walls, ceilings and trim where moisture isn't a real risk.
The functional difference
Both are acrylic-based wall paints. The real differences are in binder loading, film flexibility, and water-vapour resistance:
- Waterproof paint has a higher binder fraction and includes flexible polymers and water-repellent additives. The cured film bridges hairline cracks and resists water under driving rain.
- Regular paint has a lower binder fraction tuned for colour, hide, and washability. It breathes more vapour and is less expensive per litre.
When to use each
| Surface | Right product |
|---|---|
| Exterior walls exposed to driving rain | Rhinoluxe Shield Exterior |
| Parapets, ridge caps, flat roof details | Rhinoluxe Fiber Coat (flexible membrane) |
| Roof tiles, IBR, fibre-cement | Rhinoluxe Roof Coat |
| Bathroom and kitchen walls | Rhinoluxe Shield Indoor + Premium Pure Acrylic Semi-Gloss topcoat |
| Internal cold-spot walls with condensation | Rhinoluxe Shield Indoor + Premium Pure Acrylic Low Sheen topcoat |
| Interior bedrooms, lounge, hallways | Rhinoluxe Premium Pure Acrylic (Matt or Low Sheen) |
| Interior trim, doors, cupboards | Rhinoluxe enamel or Semi-Gloss pure acrylic |
Cost difference and why it matters
Waterproof paint is roughly 30–50% more expensive per litre than regular pure acrylic. But on a wall that needs waterproofing, the savings disappear within 2–3 years — cheaper paint fails earlier, requires more coats and more frequent repaints, and lets damp into the wall behind it. On an interior bedroom wall that doesn't see moisture, the cheaper regular paint is the better choice.
What waterproof paint can't do
- It can't fix rising damp — that's a structural / DPC repair.
- It can't bridge structural cracks larger than ~1mm without a filler underneath.
- It can't replace tile or waterproof membrane inside shower cubicles or below-ground.
- It can't make up for skipped surface prep — the bond only holds if the wall is clean and sound.
How to choose for your job
- Will this surface get direct water, rain, splash or condensation? → waterproof paint.
- Is it an internal wall in a dry room? → regular pure acrylic.
- Are you finishing a Shield base coat? → regular pure acrylic topcoat in Low Sheen or Semi-Gloss.
- Is the surface exposed to coastal salt air? → always step up to pure acrylic (waterproof or not), never styrenated.
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.
