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Cancer and construction: Silica

This page tells you about silica and the risks to construction workers from silica.

What is it?

Silica is a natural substance found in varying amounts in most rocks, sand and clay. For example, sandstone contains more than 70% silica, whereas granite might contain 15-30%. Silica is also a major constituent of construction materials such as bricks, tiles, concrete and mortar.

You generate dust from these materials during many common construction tasks. These include cutting, drilling, grinding and polishing. Some of this dust is fine enough to get deep into your lungs. The fine dust is known as respirable crystalline silica (RCS) and is too fine to see with normal lighting. It is commonly called silica or silica dust.

What is the risk to construction workers?

Silica is the biggest risk to construction workers after asbestos. Heavy and prolonged exposure to RCS can cause lung cancer and other serious respiratory diseases. HSE commissioned estimates it was responsible forĀ  the death of over 500 construction workers in 2005. In addition to the risks from lung cancer, silica is also linked to other serious lung diseases:

The amounts needed to cause this damage are not large.The most you should be inhaling during a day after using the right controls is shown next to the penny.

Can you prevent this risk?

Yes. There are a number of steps you can take.

Updated 2014-09-17