Excavation and Foundation Work.

Montreal, West Island, Laval and South Shore

Fully Insured and Licensed. RBQ: 5718-9474-01

Call for a free estimate and experience our personalized service & competitive pricing.

(514) 627-9315


About Fondasec

Fondasec provides quality and reliable service to the Montreal and Greater Montreal areas. Our professional team is dedicated to ensure that your residential, commercial and industrial properties remain free from any type of water infiltration.

Fondasec takes great pride in the knowledge we have and the quality of the products we use.

  • We handle situations from small basic cracks to complex excavation projects
  • We have the skill and experience to master all jobs safely and dependably
  • We put forward our best ideas to meet project requirements
  • We set homeowners and commercial clients on the right “foundation”

Foundation Services

Water can enter your home at any point where there is an opening in the foundation including cracks in the walls and floors and around pipes. No matter where you find it, it needs professional attention.

We offer a full range of foundation services and specialize in:

  • Pyrite Removal and Excavation
  • French Drains
  • Waterproofing
  • Crack Repairs


We use the most effective products on the market to control groundwater, rainwater and surface water from penetrating your foundation walls. Any damage caused by infiltration can be repaired by excavating and waterproofing the exterior foundation walls.

Crack Repairs & Injections

A cracked wall or floor is an invitation for moisture, leaks, mold and unpleasant odors to seep through. Even small cracks can be a problem if they leak groundwater into your basement or crawl space. Solutions include polyurethane injections and waterproofing.

Excavation Services

Adding a home extension? Want to redo your garage or basement floor? Need pyrite removal? From small residential to large commercial projects, Fondasec has the equipment and expertise for every excavation job.


We offer partial or total demolition in residential and commercial environments and we evaluate each site to identify the specific challenges and propose tailor-made solutions.

Our services also include concrete breaking and site clean up.

Pyrite Removal

Pyrite can lead to backfill swelling and cause concrete crumbling, swelling and/or cracking. We can verify for the existence of pyrite with a certified lab and take care of the removal should there be a problem.

Garage & Basement Floors

Having a good concrete base is critical. When a concrete floor is starting to crack or crumble, it can cause many problems such as moisture and humidity. Let Fondasec help by recommending a solution that works for you and your budget and one that will last for many years to come.

“I am very impressed with Fondasec. Tony and his crew, Chris and Dave, are professional, hard-working, and very polite. I had foundation work done on my home, installing French drains and fixing any cracks in the foundation. They did a very thorough job. I am completely satisfied with the work they did. They answered all my questions throughout the job. When finished, my lawn was completely cleaned up of dirt, leaving me with little landscaping to do. They are a very trustworthy company to do business with. I recommend Fondasec 100%.”
Ann Taylor

French Drains

Prevention is a definite key in keeping your home or commercial property safe from potential flooding. We install and repair French drains and sump pumps which redirects water and relieves ground water pressure.

“My dream would be to work with Sarena every morning, every workday of the year!”
“She is moving, creative, efficient & knowledgeable. You can feel she has your success at heart, she goes over & beyond. Thank you Sarena!”
– Elizabeth Peladeau