M-Sand vs River Sand for Construction in Chennai — Which Should You Use?

Ten years ago every Chennai house was built with river sand. Today, river sand is restricted, expensive and frequently adulterated with silt. Manufactured sand (M-Sand) — crushed granite graded to sand size — is what most of the city's construction now uses. Here is how we use it, and how to make sure you are getting the good kind.

Where M-Sand is better

• Concrete (RCC): M-Sand's angular grains lock together and give higher compressive strength than rounded river sand at the same mix. It also has no silt or organic matter, so the concrete is more consistent.
• Brick masonry: M-Sand mortar bonds well and does not shrink as much.

Where we still prefer P-Sand (plastering sand)

For plastering, ordinary M-Sand can feel harsh and give a rough finish. Plastering sand (P-Sand) is a finer manufactured grade made for this. We use P-Sand for all internal plastering and putty preparation.

How to check M-Sand quality

• Take a handful and rub it: it should feel gritty and leave little dust on your palm. Excess fine dust means it was not washed.
• Drop some in a glass of water and stir: the water should clear within a minute. A cloudy layer that stays is silt or stone dust.
• Ask for the sieve grading (Zone II is right for concrete) and the supplier's crusher name.

Cost in 2026

Good washed M-Sand in Chennai runs roughly ₹55–70 per cubic foot delivered; P-Sand ₹65–80. River sand, where legally available, is ₹90–130 and often mixed with silt. So M-Sand is both stronger for concrete and cheaper.

Our quotes name the sand type per stage — M-Sand Zone II for concrete and masonry, P-Sand for plastering. If a contractor's quote just says "sand", ask which.