French drain Installation
The French drain or foundation drain is a pipe installed at the base of the foundations and whose role is to control the level of the water table equally. It is therefore a drainage system channeling and evacuating water under the floor of the basement, thus protecting the structure against infiltration from a hydrostatic pressure. The pipe placed around the perimeter of the foundation circulates the accumulated water to a ditch or a catch basin which will then be pumped or evacuated gravitarily towards a municipal network.
Why a French drain?
French drain, a word more and more known in the field of housing. Unfortunately neglected by the majority of new home builders, the drainage system is a hugely needed protection for your foundations. A poorly installed or crushed French drain can cause serious damage to your building. See even mold problems resulting in health problems.
Signs that your French drain needs to be replaced
When the French drain is missing, several signs can be identified as indicators. The most common index is often the increase in humidity in the basement. While moisture can be dissipated with appliances, it is most likely that your home's foundation is cracked or the French drain is missing. Suspicious odours or stains from fungi or mould on walls, efflorescence of concrete, and the appearance of several cracks in the foundation are also other indicators that the French drain may be missing.
Until the 1960s, terracotta drains were installed. The principle was quite rudimentary but still worked for several years. Most of these drains now need to be replaced since they are often not covered with a large enough bed of stone and do not have a system to prevent roots or soil from entering. Thousands of houses in Quebec have this drainage system around the house and these homeowners realize that the system is defective the day they open walls in the basement and notice the presence of mold and efflorescence.
Agricultural drain (Big O)
For several decades, the agricultural drain was the only material used. Many contractors still use this equipment, but techniques have evolved considerably since then. The advantage of this drain over Terra Cota is that it has more holes and therefore allows water to penetrate much more easily. Some agricultural drains are covered with a geotextile. This type of drain has been installed extensively in the last decade. This drain was revolutionary when it appeared on the market but the industry quickly realized that this bottom coating the drain ended up creating a barrier that prevents water from entering the drain ESPECIALLY in the presence of ferrous ochre. When we replace a French drain, we do not use this equipment. Being flexible, it often causes ups and downs on the building perimeter, causing water retention.
BNQ drain type
This drain is actually almost the same as the drain used to make sewers. Being much stronger and smoother than an Agricultural Drain, this drain offers a much longer life and eliminates the risk of having ups and downs by installing it with a laser. Being perforated all around and having joints that unite lengths of more than 3 in., it offers strength and performance that exceeds industry standards. Since it is made entirely of plastic, its interior and exterior are smooth. When it comes time to clean it, it becomes as effective as new.
"We consider that the BNQ Type Drain has by far surpassed all its competitors and that is why we are installing it. "