One of the most common questions buyers ask is: which mesh size of silica sand do I actually need? Choosing the wrong grade can affect everything from the strength of your concrete to the clarity of your glass. This guide explains what mesh size means and which grade suits each industry.
What does "mesh size" mean?
Mesh size refers to how fine or coarse the sand grains are. The number is based on a sieve — specifically, how many openings there are per linear inch of the screen the sand passes through. A higher mesh number means a finer grain, because the screen has more (and smaller) openings.
Silica sand grades are usually written as a range, such as 16/30 or 30/60. This means the grains pass through a 16-mesh screen but are held by a 30-mesh screen — so all the grains fall within that size band. A tight range like this gives you consistent, predictable material.
Quick reference: mesh size by application
Here is a simple guide to which grades typically suit which industries. Your exact requirement may vary, so it is always worth confirming with your supplier.
| Application | Typical Grade / Mesh | Why |
|---|---|---|
| Construction & drainage | Coarse gravel, 4/8, 6/8 | Large particles for strength and free drainage |
| Metal foundry casting | 16/30 | Good permeability and refractoriness |
| Water filtration | 8/16, 16/30 | Uniform grains for effective filtering and backwashing |
| Glass manufacturing | 30/60 | Controlled size for even melting |
| Drymix mortar | 30/60, 30/100 | Consistent mix and finish |
| Ceramics & coatings | 40/100, 50/100, powder | Fine grains for smooth finish |
| Paints & fillers | Silica powder (100–325 mesh) | Very fine for texture and durability |
Coarse, medium, fine — what's the difference?
Coarse silica sand & gravel
Larger grains (gravel up to around 8/16). Used where strength, drainage and bulk matter — construction, structural fill and the coarse layers in filtration systems.
Medium silica sand
The most versatile band (around 16/30 to 40/100). This covers foundry, glass, drymix and many industrial uses. If you are unsure where to start, your need often falls here.
Fine silica sand & powder
Very fine grains and milled powders (50/100 up to 325 mesh). Used in ceramics, paints, coatings and specialty chemical applications where a smooth, fine material is essential.
How to choose the right grade
- Start with your application — the industry usually dictates the grade band, as shown in the table above.
- Check any spec you've been given — some buyers (especially glass and foundry) work to a defined particle-size and purity spec.
- Consider purity, not just size — glass and chemical uses need high silica content and low iron, verified by XRF testing.
- Ask for a sample — testing a small quantity before a full order avoids costly mistakes.
Still not sure?
If you tell us your application, we can recommend the right grade and provide a sample and test data. We supply the full range — from coarse gravel to fine silica powder — across Selangor, Kuala Lumpur and all of Malaysia. See our full product range or contact us for advice.
Need Silica Sand in Malaysia?
Serasi Hijau is a direct silica sand supplier and manufacturer in Bestari Jaya, Kuala Selangor. Request a quotation or sample today.