With presence of water in the soil, iron will oxide and penetrate into the drain forming an iron hydroxide mud which will gradually clog the drain. Eventually, this deposit may extend to a complete clogging of the drain holes that allow water to enter inside the drain. Once this is backed up, water has no more access and therefore, takes the easy way in to infiltrate the basement by the main way (the key path is the joint between the footing and the foundation wall). Clogged drains by ferrous ocher deposit are the result of biochemical reactions. There are two kinds of ocher deposit that prevents water from entering the drain.
Ocher resulting from a chemical reaction
Soils rich in iron and red ocher deposits will produce ocher deposits indefinitely. To solve the problem, we must proceed to either casing or elevating the property. Both solutions are extremely expensive and they may reduce your quality of life drastically during the construction period.
To control the problem, we recommend the installation of chimneys in order to access the drain and clean it easily if necessary.
Here are the suggested steps:
– Execute an excavation to reach the drain.
– Install chimneys to access the drain at all times.
– Check the drain with a fiber optic camera.
– Clean the submersible pump and the catchment basin.
– Clean the drain (with a high water flow pump system)
– Check the drain again using a fiber optic camera to make sure it’s properly cleaned.