No, silver sand is generally not the ideal choice for block paving. While sometimes referred to as a type of kiln-dried sand due to its fine grain size, the sand used for block paving needs to be of a coarser grade than silver sand.
Why Silver Sand Isn't Suitable
Several sources highlight that the sand used in block paving is not fine like silver sand. A fine sand like silver sand, while sometimes called "kiln-dried sand" due to its fine particle size, lacks the necessary properties for effective jointing.
- Poor Compaction: Fine sands like silver sand don't compact well between paving blocks, leaving gaps and making the paving unstable. This leads to weed growth and erosion.
- Washes Away Easily: The fine particles of silver sand are easily washed away by rain or pressure washing, requiring frequent re-application.
- Incorrect Grain Size: Block paving requires a coarser sand with appropriate grain size for proper jointing and stability.
What Type of Sand Is Suitable for Block Paving?
The best sand for block paving is typically kiln-dried sand, also sometimes referred to as jointing sand or dry aggregate sand. This type of sand is specifically chosen for its ability to compact well and remain stable, filling the gaps between the blocks effectively. It is characterized by its low moisture content and coarser grain size compared to silver sand.
In Summary
While silver sand shares a name with a type of sand often used in construction (kiln-dried sand), the grain size difference makes it unsuitable for block paving. Use kiln-dried sand for best results.
