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Thrasher Foundation Repair

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Our Services

  • Concealed drainage system
  • Powerful, reliable sump pumps
  • Battery backup systems
  • Patented waterproofing products
  • Energy-efficient dehumidifiers
  • Industry-leading warranties

Basement Waterproofing Companies in Quebec

1620 boul Saint-Elzéar O
Laval, QC H7L 3N2
Systèmes Sous-sol Québec, also known as Basement Systems Quebec, services the Quebec, Montreal, Joliette, Laval, Lachenai, Longueuil, Chambly, Saint-Constant, and Saint-Hyacinthe area.
View company profile for reviews, awards, before & after photos, and more.

Your Home faces Water Damage

1. As the snow melts and the rain falls flash flooding near your home can become a serious concern.

2. When flooding hits your area, your basement is most likely to be the prime target for water damage.

3. If you allow it to be wet, moldy, humid, smelly, and unhealthy, you're abandoning an entire floor of space in your home. Additionally, the basement air - filled with odors, dust mite feces, humidity, and mold spores - will rise into the rest of the house, ruining the healthy environment of the home.

Basement Waterproofing & Crawl Space Repair

We specialize in basement and crawl space environments - it's what we do everyday and we're the experts! Our waterproofing contractors are experienced with all types of water problems from basement flooding to a small leaking crack.

We Provide:
  • Basement Waterproofing
  • Crawl Space Encapsulation
  • Leak Repairs
  • Exclusive, Patented Products
  • World's Best Sump Pumps
  • Energy-Efficient Dehumidifier             
You Receive:
  • Permanently Dry Basement or Crawl Space
  • Controlled Humidity
  • Mold Mitigation
  • Lifetime Transferable Warranty
  • Greater Home Value
  • Peace of Mind

Whether your basement has water seepage through the wall floor joint, or there is flooding from your hatchway doors, windows, or from cracks in the structure, we can keep your basement dry all the time!

Quebec's Trusted Waterproofing Company

Testimonials

  • In only one month, Basement Systems fixed the problem in my house. When finished, they did put all the... Read Full Testimonial
    Mr. Gonzalez
    Laval, QC

    Customer Testimonial

    Mr. Gonzalez
    Laval, QC
    Mr. Gonzalez' home in Laval, Quebec had a finished basement that one day began to leak and cause many problems. As a savvy homeowner, Mr. Gonzales began to search the internet for the right company to fix the problem and restore his basement. That is how he found Basement Systems Quebec. The company not only that the right solution to stop basement leaks, but they also had the right materials to restore the water damaged walls and floors. The company is the only basement restoration company in Quebec to offer MillCreek waterproof basement flooring and the exclusive EverLast Basement Wall Restoration System: 100% waterproof and mold resistant material that will not support mold growth or be damaged by moisture and water accidents. Mr. Gonzalez is extremely satisfied with the way his basement looks now, and confident that it will last for many years. He is also very happy with the service provided by the company. "In only one month, Basement Systems fixed the problem in my house. When finished, they did put all the furniture, all the equipment in the same place as when they saw it at the first moment they came to my house."
  • Si je trouve quelqu’un qui aurait le même problème, je suis prêt à... Read Full Testimonial
    Lucian G.
    Montreal, QC

    Customer Testimonial

    Lucian G.
    Montreal, QC
    Ce père a découvert des infiltrations d’eau et des dommages dans le sous-sol de son fils dans la Rive-Sud de Montréal. Il a aidé son fils à trouver une bonne compagnie qui aurait une solution adaptée à ce problème. En faisant sa recherche en ligne, il a trouvé beaucoup d’explications sur notre site web et a bien aimé la logique de notre système d’imperméabilisation de sous-sol de l’intérieur. M Ghitescu a trouvé que le système de drain intérieur WaterGuard et les systèmes de pompes de puisard SuperSump et UltraSump étaient ce qu’il leur fallait. Dans cette vidéo, notre client discute de la qualité de la relation qu’il a eue avec les membres de notre équipe dès le début de la procédure. Dans ses propres mots : « Si je trouve quelqu’un qui aurait le même problème, je suis prêt à recommander la compagnie. »
  • Il y avait vraiment une belle conscience professionnelle de tous les ouvriers qui sont venus ici! Read Full Testimonial
    Linda-Lyle Aubry
    Rosemont-La Petite-Patrie, QC

    Customer Testimonial

    Linda-Lyle Aubry
    Rosemont-La Petite-Patrie, QC
    Suite aux dégâts d’eau qu’a subi le sous-sol de sa maison centenaire dû à un bris du chauffe-eau, Mme Aubry a appelé sa compagnie d'assurance pour constater les dommages. Cette dernière a réalisé, après avoir enlevé le plancher, qu'il y avait une infiltration d’eau au niveau de la fondation et ne pouvait donc payer pour les réparations des dégâts d’eau que si le sous-sol était complètement imperméabilisé. Après avoir rencontré 2 compagnies sans être convaincus que les solutions règleraient leur problème, Mme Aubry et son conjoint se sont tournés vers l’internet et ont trouvé Systèmes Sous-sols Québec. Comme nos clients ne voulaient pas embarquer dans de grands travaux, notre système de drainage intérieur WaterGuard était une solution parfaite, puisqu’ il remplaçait complètement le drain français, et leur permettait donc d’éviter de grands travaux d'excavation dans leur cour nouvellement aménagée. Un autre grand avantage avec notre compagnie était la garantie à vie que nous offrons pour le drain, en comparaison avec les autres entrepreneurs en étanchéisation des sous-sols qui ne leur ont offert que des garanties de 10 ans. Mme Aubry et son conjoint ont très aimé l'approche de tout notre personnel : de la confiance qu’a émané notre spécialiste Jorge en agissant comme conseiller plutôt que comme vendeur, à l’empathie et l’esprit de toute l’équipe, le respect de leurs présence, valeurs et environnement. Dans ses propres mots Mme Aubry nous racontait qu’« Il y avait vraiment une belle conscience professionnelle de tous les ouvriers qui sont venus ici". Mme Aubry a tellement apprécié le service de notre équipe qu'elle a trouvé « qu’ils avaient un esprit familial puis qu’[elle] faisait partie de la famille". Enfin nous sommes très contents d’avoir pu répondre aux besoins de Mme Aubry et de sa famille, et de rendre son sous-sol habitable.
  • We paid less than we would have paid if we went with another supplier but the work was actually done well and... Read Full Testimonial
    Nick I.
    St. Leonard, QC

    Customer Testimonial

    Nick I.
    St. Leonard, QC
    After ten years living in his home, Nick I. from St. Leonard, Quebec noticed that the basement started to leak, probably because of an extension that was built without proper drainage. He called a few companies in the area for an estimate, but only Basement Systems Quebec offered a complete solution that made sense to him for a number of reasons. First it wouldn't require digging out the foundation from the outside or a lot of excavation from the inside. Installing the exclusive WaterGuard system offered by the company would only require jack hammering a six inch trench along the interior perimeter of the basement walls. The system was also more affordable, but it was the sump pump system with alarm and a battery backup, and the Transferable Lifetime Warranty offered by the company that really convinced Nick that he had the right company and the right products for the job. "Overall we are very satisfied. If someone would come to me and ask me for my advice, without hesitation I would strongly recommend Basement Systems Quebec, because their problems would be solved, they could be assured that there wouldn't be any more water coming into their house, and the service that they would provide would be very good, and they could have the confidence that their are reliable." - explains Nick. "We paid less than we would have paid if we went with another supplier but the work was actually done well and we haven't had a problem ever since. "
  • My experience with Systèmes Sous-sol Québec has been excellent. Read Full Testimonial
    Daniel C.
    Ahuntsic-Cartierville, QC

    Customer Testimonial

    Daniel C.
    Ahuntsic-Cartierville, QC
    The problem I had fixed was with one of my dwellings. I have a three and a half that is a short basement, and it had water infiltration. One of the walls was starting to show cracks.In theory, there was supposed to be a French drain on the outside, but I never dug the outside earth around the house. In other words, I have a swimming pool on the outside, a deck that occupies part of the backyard, so we would have had to demolish everything to enter the equipment in order to access the French drain.When I went to the home show, I saw this was a professional company that offered solutions adapted to the type of problems I was facing. The company was specialized in crawl spaces, which was my case, and in basement water infiltration, specifically. What I liked is that we were able to find, with the WaterGuard system, the ability to install a French drain as there was water infiltration, from the inside of the house rather than do it from the outside.As for my level of satisfaction, if I have a neighbor or friend who mentions they have similar water infiltration problems and who need a solution, I will not hesitate to recommend Systèmes Sous-sol Québec.The company is very professional, a quality service from finding the solution and selling it to the execution of the work.The work went very well, the team was very professional. They were meeting with me from time to time during the days when the work was being done and giving me explanations during the different stages. I was looking for a company that was specialized in this kind of problems.Do a solution that would last very long. When I will sell the house, the warranty is transferable. My experience with Systèmes Sous-sol Québec has been excellent.There is a lifetime warranty that is offered with it.
  • In this video, the family discusses their experience with Systèmes Sous-sol Québec and the... Read Full Testimonial
    Eva & Jeff P.
    Notre-Dame-de-l'Île-Perrot, QC

    Customer Testimonial

    Eva & Jeff P.
    Notre-Dame-de-l'Île-Perrot, QC
    Eva and Jeff Parry, residents of Notre-Dame-de-l’Île-Perrot, QC, had dirt crawl space that was very humid because of the soil and the water infiltrations. Mold started to appear on walls and floors. They knew they had to fix this issue because their daughter Jessika had a terminal condition called Spinal Muscular Atrophy type 1 so the Parrys had to do everything they could to improve the air quality that was badly affecting her breathing and respiratory system. Our team went and fixed this problem by fully encapsulating the crawl space by installing a vapor barrier membrane, a crawl space interior drain, a sump pump system and a powerful dehumidifier system. In this video, the family discusses their experience with Systèmes Sous-sol Québec and the impact of the encapsulation on their daughter’s health.
  • There is not a drop of water in the basement this year and we have probably had the worst spring on record. Read Full Testimonial
    Garnet A.
    Beaconsfield, QC

    Customer Testimonial

    Garnet A.
    Beaconsfield, QC
    Hi Andrew, I just wanted to give you an update on our basement. People love to give bad news, but I want to give you good news. There is not a drop of water in the basement this year and we have probably had the worst spring on record. I don't know if you remember the job, but your team put in an interior french drain around 3/4 of my basement and dug the sump pit about 1 foot deeper. The interesting part is that there has not been a drop of water in the interior french drain. It seems like digging the sump pit deeper was all that was necessary. Water is pumped out into my front ditch before it ever gets high enough to get into the drain. Now, I can finish my basement with confidence. Thanks for your help. Garnet
  • Andrew et Eugene sont formidables!! Read Full Testimonial
    Judith D.
    Montréal, QC

    Customer Testimonial

    Judith D.
    Montréal, QC
    Très satisfaite de l'installation, Eugene était très professionel. Andrew et Eugene sont formidables!!
  • Systèmes sous-sol Québec est une compagnie que je peux recommander les yeux fermées... Read Full Testimonial
    Samuel S.
    Petite-Patrie - Montréal, QC

    Customer Testimonial

    Samuel S.
    Petite-Patrie - Montréal, QC
    Bonsoir Nelson xxxxxx , Systèmes sous-sol Québec est une compagnie que je peux recommander les yeux fermées. J'ai fais faire des travaux il y a 3 ans et j'ai été ravi non seulement sur le moment mais encore plus aujourd'hui quand je vois la durabilité. De plus que ce soit Michel le propriétaire ou Antonio qui est le représentant avec lequel j'ai toujours été en contact, ce sont des personnes de confiance et très intègres. Lorsqu'ils disent qu'ils peuvent ou vont faire ceci ou cela, "delivery exceeds expectations". C'est un drôle de hasard mais j'ai signé aujourd'hui un contrat de près de 20K pour des travaux d'assainissement dans un immeuble locatif que je possède... cela est pour vous dire à quel point je suis satisfait de leur travail il y a qques années, de leur service et de leur professionnalisme. Si vous voulez en discuter plus en détails, vous pouvez me rejoindre au xxxxx. Samuel xxxxxxx

We have basement waterproofers and crawl space repair contractors throughout Canada, the United kingdom, and the United States, with more than 300 locally owned and operated dealers in all. Combined, our research, experience, and innovative products help us to maintain ourselves as the world leaders in customer satisfaction, quality workmanship, and long-lasting results.

For homeowners in Quebec including Montreal, as well as Drummondville, Granby, La Sarre, Laval, Rimoiski, Rouyn Noranda, Saint-Hyacinthe, Sherbrooke, Val-d'Or, Victoriaville, there is a local and authorized contractor able to help your home. Contact us today online or by phone for your free basement or crawl space waterproofing quote!

A wet basement wastes valuable living space, damages your house, ruins valuable stored items, and even pollutes the air you breathe. When it’s time to fix a wet basement, go with the company that has revolutionized waterproofing. Basement Systems has been keeping basements and crawl spaces dry for hundreds of thousands of homeowners throughout the United States, Canada, the United Kingdom, and Ireland. As a member of the Basement Systems network, we can offer patented products that aren't available to other contractors. We can provide a permanent solution to your waterproofing problem and will back it up with a lifetime, transferable warranty.

Customer Reviews

  • full starfull starfull starfull starfull star
    By André C.
    Gatineau, QC
    Employés gentils, polis, courtois et...
    View Review

    Customer Review

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    By André C.
    Gatineau, QC
    Employés gentils, polis, courtois et compétents!  
  • full starfull starfull starfull starfull star
    By Marie A.
    Gatineau, QC
    Nous avons faite réparé la fondation de notre...
    View Review

    Customer Review

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    By Marie A.
    Gatineau, QC
    Nous avons faite réparé la fondation de notre maison et résolu les problèmes d'infiltration d'eau.  Très satisfaite du travail accompli. Les employés étaient très gentils, on m'a expliqué en quoi comportait les travaux et on ma fait faire un tour de la maison afin de tout m'expliquer.     
  • full starfull starfull starfull starempty star
    By Pascal Q.
    Gatineau, QC
    Continuez votre bon travail. Merci et bonne journée.
    View Review

    Customer Review

    full starfull starfull starfull starempty star
    By Pascal Q.
    Gatineau, QC
    Continuez votre bon travail. Merci et bonne journée.
  • full starfull starfull starfull starfull star
    By Tony R.
    Gatineau, QC
    Surprisingly good! Our basement was cleaner when they left...
    View Review

    Customer Review

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    By Tony R.
    Gatineau, QC
    Surprisingly good! Our basement was cleaner when they left than when they arrived.
  • full starfull starfull starfull starempty star
    By Guy G.
    Gatineau, QC
    WaterGuard, CleanSpace, CarbonArmor, etc
    View Review

    Customer Review

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    By Guy G.
    Gatineau, QC
    WaterGuard, CleanSpace, CarbonArmor, etc
  • full starfull starfull starfull starfull star
    By George W.
    Long Sault, ON
    I live in Long Sault Ontario, I was getting the run around...
    View Review

    Customer Review

    full starfull starfull starfull starfull star
    By George W.
    Long Sault, ON
    I live in Long Sault Ontario, I was getting the run around with the contractors in Ontario so I decided to get the work done by Systemes Sous-Sol. The workers did an excellent job, I couldn't ask for a better job. Systemes Sous-Sol always kept me updated and they did the job on time and at a reasonable cost. Super Happy customer!!!
  • full starfull starfull starfull starfull star
    By Magdalena S.
    Bainsville, ON
    I have already recommended your company to friends
    View Review

    Customer Review

    full starfull starfull starfull starfull star
    By Magdalena S.
    Bainsville, ON
    I have already recommended your company to friends
  • full starfull starfull starfull starfull star
    By Raymond W.
    Bainsville, ON
    I found info on basement encapsulation online and liked the...
    View Review

    Customer Review

    full starfull starfull starfull starfull star
    By Raymond W.
    Bainsville, ON
    I found info on basement encapsulation online and liked the what was said about your system.
  • full starfull starfull starfull starempty star
    By Réal L.
    Montpellier, QC
    Je veux tout simplement vous remercier puisque le...
    View Review

    Customer Review

    full starfull starfull starfull starempty star
    By Réal L.
    Montpellier, QC
    Je veux tout simplement vous remercier puisque le système fonctionne à plein régime depuis quelques jours et tout est sec au sous-sol !
Click to see why people hire us

Recent job requests for basement waterproofing in QC:

Project Location: Saint-lazare, QC J7T 2E8

Comment: Hi there I'm looking at installing a sump pump system. Would be interested in having a quote done for the work. Thank you

Project Location: Kirkland, QC H9J 2X2

Comment: Just want an estimate

Project Location: Beaconsfield, QC H9w 4y4

Comment: Je veux un estimation pour le system triple safe (sump pump)

Project Location: Pierrefonds, QC H9k 1j3

Comment: Sump pump system for basement , flooded twice in 7 years even though we have a sump pump

Project Location: Kirkland, QC H9J 2E5

Comment: Interested in inside drain and water resistant floor

Project Location: Sainte-marthe-sur-le-lac, QC J0N 1P0

Comment: Nous souhaitons moderniser notre pompe de puisard dans le sous-sol.

Project Location: Beaconsfield, QC H9W 6C6

Comment: Water comes in in the unfinished mechanical room in the basement when it rains heavily or snow is melting. Water comes between the wall and floor, also crack on the floor.

Project Location: Dollard Des Ormeaux, QC H9G 1J4

Comment: Looking for quote to waterproof basement

Project Location: Pierrefonds, QC H8Z 1Y7

Comment: Basement after the floods

Project Location: Cote Saint Luc, QC H4W 2A2

Comment: Water leaking in basement when there is a heavy rain.

Project Location: Saint-laurent, QC H4N 2K5

Comment: Looking for a quote for a triple safe sump pump install (adding a second sump pit).

Project Location: Mont-royal, QC H3R 1A7

Comment: I was affected by the flood of August 9, 2024; my cement floor is cracked; I do not have a sump pump. Because of climate change my community will be affected by torrential rains again. I would like to ensure that my basement will be waterproofed.

Project Location: Bois-des-filion, QC J6Z 2B3

Comment: I want a much more reliable pump, recently mine was not pumping enough water which caused a flood in my basement

Project Location: Anjou, QC H1k 4e2

Comment: Sous-sol inondé

Project Location: Varennes, QC J3x 1r2

Comment: Faire installer un système avec basin et sump pump.

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