Description
Alcolin NC120 5 Litre is a clear siloxane liquid formulated to penetrate deep into porous masonry and stone surfaces, providing long-lasting water repellency without altering appearance. Alcolin NC120 5 Litre is ideal for preserving the natural beauty of unpainted substrates while preventing moisture-related damage such as moss growth, efflorescence and damp patches.
Attributes:
- Size: 5L
- Type: Siloxane-based penetrating water repellent
- Colour: Clear
- Appearance: Thin liquid – invisible when cured
- VOC: Low
- Shelf life: 12 months unopened
- Coverage: ±5–8m² per litre depending on porosity
- Application method: Brush, roller or low-pressure spray
- Drying: Tack-free in ~1 hour
- Water vapour permeability: High – allows substrate to breathe
- UV resistant – suitable for exterior use
- Alkaline resistant – resists breakdown on masonry
Uses:
- Sealing facebrick, sandstone, concrete and porous stone
- Preventing water ingress on exterior walls
- Reducing moss, fungus and efflorescence
- Preserving natural finish of unpainted surfaces
Advantages:
- Deep penetration – long-lasting protection
- Invisible finish – does not alter substrate appearance
- Fast water repellency development
- Durable – effective for up to 10 years
- Tack-free drying – no dirt pickup
- Allows substrate to breathe – prevents trapped moisture
Limitations:
- Not suitable for underwater use (e.g. pools, dams)
- Cannot be applied to painted or sealed surfaces
- Not for oil repellency (e.g. garage floors)
- Avoid use on gypsum-based plaster
