JG Lessard can perform pyrite decontamination for you, removing the contaminated backfill and replacing it with the best backfill stone: pyrite-free, of course! We can also repair cracks and, if the problem is more serious, we can pour a new slab.
Our decontamination services include pyrite decontamination.
Pyrite is a mineral that was commonly used in crushed stone mixes for concrete slab backfill in garages and basements. However, in the presence of moisture and oxygen, pyrite triggers a chemical reaction that causes it to expand.
The swelling of the pyritic backfill puts pressure on the concrete slab, creating cracks and uplift. If the problem gets worse, the pyrite can even exert pressure on your foundation walls, creating cracks in the latter.
If you have cracks in your concrete slab, pyrite may be to blame. To determine if you have pyrite problems, the cracks will be cross-shaped, with white powder inside.
If you have any questions about our pyrite decontamination service, contact us today! You can also fill out a quick and easy quote request!
We carry out projects in residential renovation, post-disaster renovation, office fit-ups, masonry and bricklaying, decontamination work and industrial maintenance in and around Montreal.
We carry out all types of projects, from the simplest to the most complex. Whether for new construction, expansion or renovation of commercial, industrial or residential buildings, we ensure rigorous, standards-compliant work.
With over 50 years' experience, we offer efficient project management, durable materials and strict adherence to deadlines. Our personalized approach guarantees quality results tailored to each customer.
Yes, we restore and modernize historic buildings while preserving their architectural character. Our experts use techniques adapted to the requirements of heritage.
We work in all building-related fields, whether commercial, industrial, residential or institutional. Whether it's for construction, renovation, expansion or fit-out, our expertise covers every aspect of the building.
Yes, we provide free, detailed estimates for your construction or renovation projects. Contact us to discuss your needs!
Recognized for our commitment and reliability, we are at your side to turn your ideas into reality.
