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Exterior French Drain in Montréal
Exterior French drain solutions in Montreal, Laval, and the South Shore offer durable solutions to prevent water infiltration and flooding, keeping your basement dry all year long
Water is the worst enemy of your foundation, inevitably causing damage to the concrete and finding its way into your basement through the smallest crack. We offer the installation of a French drain that will adequately do its job of keeping water away from your home. French drainage is a common method used to protect foundation walls from water damage.
To ensure effective drainage for many years, we install our premium products and exclusive installation procedures for your French drains. This allows you to obtain an effective, durable, and easy-to-maintain system that keeps your basement safe from infiltration problems.
When we are finished, we provide you with a written guarantee for the waterproofing of your basement. If you ever decide to sell your home, this guarantee can be transferred to the new owner.

Damages Caused by Water Infiltration:
- Structural Damage: Water infiltrating the foundation can damage the concrete and cause cracks that can weaken the structure of the house.
- Mold Growth: Moisture that penetrates the foundation walls can create a favorable environment for mold growth, which can be dangerous to health.
- Health Problems: Mold can cause health problems such as allergies, respiratory problems, and fungal infections.
- High Repair Costs: Moisture and mold problems can be expensive to repair and sometimes require major renovation work.
Our installations are carried out:
- Excavating a trench around the foundation down to the base of the foundation. The trench must be wide enough to allow for the placement of the drainage pipe and comfortable working.
- Cleaning the foundation and installing a waterproof membrane, installing a Delta MS drainage mat.
- Installing a geotextile to prevent soil particles from entering the drainage pipe.
- Installing a 4-inch perforated rigid and smooth BNQ drainage pipe in the trench. The pipe must be laid with a minimum slope of 2% to allow water to flow.
- Installation of inspection chimneys to allow for inspection and cleaning.
- Filling the trench with 3/4-inch clean crushed stone up to approximately 12 inches above the drainage pipe.
- Connecting the drain to a sump.
- Folding the geotextile over the gravel to cover the drainage pipe.
- Backfilling the trench with compacted soil.

Installation of Drainage Carpet in Montréal
Delta-MS is a waterproof and water vapor impermeable dimpled membrane. Its exclusive dimpled structure is vacuum-molded, creating an air gap between the membrane and the foundation wall. This unique concept allows any water that inadvertently penetrates behind the membrane to flow freely towards the perimeter footing drain. The air gap created by the dimples provides a reliable separation and complete capillary break between the foundation wall and the moisture in the soil.
Unlike sprayed-on coatings, Delta-MS can bridge major cracks and imperfections in foundation walls. It can also serve as an effective protective layer to reinforce spray-applied or self-adhesive membrane waterproofing systems.
Delta-MS is available in various dimensions, enabling seamless coverage of all foundation types with minimal seams and overlaps. Its high compressive strength, achieved through specially optimized dimple geometry and structure, provides long-lasting protection to foundation walls.

The purpose of Delta MS membrane is to protect building foundations from water infiltration and soil moisture. The membrane is designed to be installed on foundation walls, creating a waterproof barrier between the wall and the surrounding soil. It also creates an air gap between the membrane and the foundation wall, which provides a reliable separation and complete capillary break between the foundation wall and the moisture in the soil.
By using this membrane, property owners can protect their building from the harmful effects of moisture, such as mold, structural damage, and material degradation. Delta MS membrane is particularly useful in areas where rainfall is frequent or where the groundwater level is high.
The liquid waterproofing membrane is a system composed of SBS-modified elastomeric bitumen. Due to its flexibility, it is ideal for preventing water penetration and preventing the accumulation and absorption of moisture in your home's foundation.
Waterproof Membrane Installation in Montréal
This waterproof membrane allows for a hermetic protection by eliminating the contact of the foundation walls with elements present in the soil such as sand, rock, soil, and water. The elastomeric membrane also helps.
It is important to choose the liquid membrane that is adapted to the climatic and geological conditions of your region, as well as to follow the manufacturer's instructions for its application and maintenance. If your property is located in a flood zone, it is imperative that you have a waterproof membrane installed. To choose the right membrane and install it according to the rules of the art, you must turn to the services of a specialist. Waterproofing the foundation of your building is the key to your comfort. This is why it is essential to deal with professionals such as Sous-Sol Confort.

It is important to waterproof the foundation for several reasons:
- Preventing water infiltration: Waterproofing the foundation helps protect the structure of the house against water infiltration, which can cause long-term damage. Water that seeps into the foundation can cause problems with moisture, mold, and wood rot, which can eventually damage the structure of the house.
- Preventing structural damage: Water infiltration in the foundation can weaken the foundations and cause structural damage to the house. Concrete foundations can crack and disintegrate due to water, which can lead to alignment problems and structural damage.
- Improving energy efficiency: Waterproofing the foundation can help reduce heat and energy losses by preventing moisture from entering the house. This can improve the energy efficiency of the house and reduce heating and cooling costs.
In summary, waterproofing the foundation is important to protect the structure of the house against water infiltration, prevent structural damage, and improve energy efficiency. It is an important step to consider in the construction or renovation of a house to ensure its durability and long-term sustainability.
Before and After
Case Studies
Solution for Basement Water Infiltration in Rosemont, QC

Water infiltration was a recurring problem in our client Mr. Christian's basement located in Rosemont, QC. Every year, he faced infiltrations that could cause significant damage.
In his quest for a permanent solution, Mr. Christian conducted extensive online research and eventually chose to trust the expertise of Sous-Sol Confort.
Solution through Exterior Foundation Waterproofing in Laval, QC

Ms. Christelle De Oliveira is facing water infiltration problems in her basement due to heavy rains and snow melting. She is looking for a solution to address these issues and wishes to have a dry and comfortable basement.
Interior Basement Waterproofing in Fabreville, QC

Our client was facing a persistent issue of water infiltration in their basement. Every year, their foundation allowed a certain amount of water to enter, gradually deteriorating their wooden floor due to excess humidity. In search of a permanent solution, they turned to the internet for answers. After comparing various options, their choice ultimately landed on Sous-Sol Confort.
Solution with Exterior Foundation Waterproofing System in Anjou, Montreal, QC

Our client, Mr. Popusoi, is facing water infiltration issues in his basement due to heavy rains and snowmelt. She is seeking a solution to address these problems and wants to enjoy a dry and comfortable basement.
Exterior Foundation Waterproofing System in Saint-Léonard, Montreal, QC

Mr. Anthony Montecalvo is facing issues of water infiltration into his basement due to heavy rains and snowmelt. The client is looking for a solution to address these problems and wishes to have a dry and comfortable basement.
Interior Basement Waterproofing in Montreal, QC

Our client, Mr. Robert in Montreal, faced a persistent issue of water infiltration in his basement. Every year, his foundation allowed a certain amount of water to penetrate, gradually deteriorating his wooden floor due to excess moisture. In search of a permanent solution, he turned to the internet for answers. After comparing various options, his choice ultimately fell on Sous-Sol Confort.
Interior Basement Waterproofing in Saint-Rose, QC

Our client, Mr. Alex, was facing a persistent water infiltration problem in his basement. Each year, his foundation allowed a certain amount of water to seep in, which had gradually deteriorated his wooden flooring due to excess moisture. Seeking a permanent solution, he turned to the Internet for answers. After comparing various options, he ultimately chose Sous-Sol Confort.
Thanks to the Exterior Foundation Waterproofing System in Saint-Léonard, Montreal, QC

Mr. Franco is facing water infiltration issues in his basement, caused by heavy rains and snowmelt. He is looking for a solution to resolve these problems and desires a dry and comfortable basement.
Waterproofing and Installation of an Interior Drain in the Basement in Saint-Sulpice, QC

Our client, Mr. François Rouleau, was facing a recurring water infiltration problem in his basement. Every year, his foundation allowed a quantity of water to enter, gradually deteriorating his wooden floor due to the excess moisture. In search of a permanent solution, he turned to the internet to find answers. After comparing several options, he ultimately chose Sous-Sol Confort.
Sump Pump Installation and Waterproofing in the Basement in Sainte-Thérèse, QC

Mr. Melios was facing major issues with his sump pump system, which was noisy, unreliable, and frequently stopping. These malfunctions were causing him significant concerns, particularly during heavy rains or the spring thaw. He wanted a durable and effective solution to protect his basement from water infiltration or flooding.



































