The Cause

Use of backfill containing pyrite (not DB certified)


The Long-Lasting Solution

A laboratory test shows whether the stone in the backfill has high swelling potential. If this is the case, the backfill must be excavated and replaced with DB-certified crushed stone (without swelling potential). The backfill must be removed.


The Scope of Work

  1. Break the damaged concrete slab
  2. Remove the backfill
  3. Spread and compact new DB-certified stone backfill
  4. Pour a new concrete slab

Our team of experts uses small excavation equipment to maximize operational efficiency safely.


Contact Us Today!

514 990-2519
Toll free :1 888 655-2519

Here are some examples of the different types of work performed for pyrite removal:

Our Satisfied Customers

The entire Bisson Expert team is committed to ensuring full customer satisfaction. Over the years, we have developed a proven process that encourages us to strive for excellence, thanks to our talented and committed team of experts.

“ Very knowledgeable, friendly, quick and efficient. Between the representative and the project manager, everyone was very easy to deal with. ”

– Mrs Maclean from Kirkland

“ Amazing service and work. I was very happy with the entire process. ”

– Mr Ajram from Montreal