No, sharp sand and plastering sand are not the same. While both are types of sand used in construction, they differ significantly in their properties and intended uses.
Key Differences Between Sharp Sand and Plastering Sand
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Sharp Sand: This sand has a coarser texture with angular grains. This gives it added strength when mixed with cement, making it ideal for applications requiring high strength, such as concrete. As noted by multiple sources, sharp sand is often an ingredient in ballast sand, but is not the same thing. (Marshalls, DIY Doctor).
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Plastering Sand (Builder's Sand): This is a finer grade sand with smaller, more rounded grains. Its smoother texture makes it suitable for applications where a smoother finish is required, such as plastering and mortar. It is often referred to as builder's sand, river sand, screeding sand, mason's sand, or bricklayer's sand. It's important to note that while some sources mention plastering sand being a type of sharp sand without silt (Plasterers Forum), the predominant understanding is that they are distinct. (DIY Doctor, DIY StackExchange, Bosaco Ltd, Materials Market).
One source even states that builder's sand is not the same as plastering sand (river sand) or desert sand – highlighting the multiple types of sand used in building and construction. (Materials Market). Another source points out a potential confusion in labeling, where building sand and plastering sand might be considered the same in some regions, but this is not universally true. (Period Property UK) The crucial difference lies in the grain size and shape impacting the final product's texture and strength.
In summary, while there can be regional variations and labeling inconsistencies, sharp sand's coarse texture lends itself to applications prioritizing strength, whereas plastering sand's finer texture is better suited for smoother finishes. They are not interchangeable.