Services
Pyrite decontamination and removal
Secure your slab with our certified anti-pyrite solutions
We safely remove pyrite-contaminated backfill located under the foundations or slabs of your garage or home. From the first signs of cracking to advanced structural damage, our professional pyrite decontamination service protects the integrity of your building while guaranteeing complete peace of mind.
What is pyrite
(and why does it pose a risk)?
Pyrite is a natural mineral found in some crushed stone used as backfill under concrete slabs. When exposed to moisture and oxygen, pyrite oxidizes and expands, causing the soil beneath your property to expand.
Over time, this expansion can lead to:
- The appearance of structural cracks
- The lifting of your floors
- Major structural damage
Signs indicating
pyrite contamination
Not all damage is immediately detectable. If you observe any of these things in your basement or garage, pyrite could be the cause:
- Uneven or raised floors
- Cracked or crumbling concrete
- Cracks in the foundation slab or walls
- New spaces between the walls and the floor
- Musty odors or visible signs of dampness in the basement
- Uneven or raised floors
- Cracked or crumbling concrete
- Cracks in the foundation slab or walls
- New spaces between the walls and the floor
- Musty odors or visible signs of dampness in the basement
These symptoms are particularly common in homes built with contaminated stone from Quebec quarries before the 1980s. If you live in the Greater Montreal area, having your foundations tested for pyrite can allow you to take action before costly damage occurs.
Our pyrite removal process
We take care of the entire decontamination process, from initial analysis to final cleaning, including in confined spaces such as garages or cramped basements.
Our simplified approach guarantees complete transparency regarding the progress of the work:
- Free estimate — Call us or request an online estimate.
- On-site inspection — We assess your property and provide you with a detailed quote.
- Planning and preparation — As soon as the contract is signed, we cover the work area with a tarp.
- Safe removal — Our technicians excavate and remove the contaminated backfill.
- Replacement with clean backfill — We replace it with certified non-expanding stone.
- Site cleanup — We clean the work area and make it ready for reuse.
- Post-work follow-up — We remain available to answer any questions you may have after the work is completed.
Why choose
360 fonda pro
Recognized
expertise
We combine technical expertise and field experience to guarantee lasting results.
A transparent and
reliable service
We respect our commitments, communicate clearly, and bring every project to completion.
Quality at
a reasonable price
We use the appropriate equipment and professional techniques to carry out your work properly, on time and within your budget.
Learn more about us
Discover our other foundation services
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Financing
available
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