2.5kg black concrete pond sealer
Market-leading black sealant for sealing rendered concrete ponds and preventing water ingress.

Key features
- Black finish formulation (apply over clear base coats)
- Covers up to 4.5m² per 2.5kg tin
- Cures in 45–60 minutes between coats; maximum 4 hours between applications
- Suitable for pond floors, walls, flagstones, waterfalls and concrete ornaments
- Prevents water loss and lime leaching from concrete structures
£179.98 incl. VAT
For one 2.5kg pack · SKU G4BLK002
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About this product
A concrete-based pond requires a final render seal to stop water penetration and lime leaching. This black formulation is applied over two coats of clear sealer to achieve maximum waterproofing and durability. Each 2.5kg tin covers approximately 4.5m² of surface area.
Used for
- Sealing rendered concrete pond floors and walls
- Waterproofing concrete water features and fountains
- Protecting flagstones and paving in wet areas
- Sealing concrete statuary and ornaments for pond use
Specification
| Coverage | approximately 4.5m² per tin (based on recommended application rate) |
|---|---|
| Recoat time | 45–60 minutes minimum; 4 hours maximum |
| Application | requires two clear base coats before black finish coats |