Pyrite. What is that?

Posted on 22 November 2021

Pyrite is iron sulfate which is found in stone and used as backfill. It is located under the concrete slab of houses. Over time, pyrite swells with moisture and expands. This causes tremendous pressure on the concrete slab and can lead to cracks or even lift the slab.

This problem, originally common in Montérégie and in certain Montreal neighbourhoods, can now be found in several regions. The most at-risk homes are those built in the 1980s, but there are also cases in older homes.

If you notice any cracks or lifting in the concrete slab of your house or garage, have a pyrite test done to be sure. If unfortunately, the test proves positive, the Héneault and Gosselin experts can help you restore your property to its full value by removing the pyrite, backfilling it with certified crushed stone and building a new slab of concrete. Obviously, all with the best warranty in the industry.

To request an inspection or a diagnosis, to get a quote or to simply find more information, call 1 800 363-1510 or visit our web site. There you will find all of the information on our services, our way of doing things, and our guarantee.

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