Basement Waterproofing - French Drain replacement system in Dollard-des-Ormeaux
You can see here the finishing stages of installing the internal footing drain. After having broken about 6 inches of the slab perimeter, installed the drain, levelled it and connected it to the sump pump, we recement on top of it getting the level flush with the slab.
The WaterGuard has a flange sticking out, which leaves about half an inch of space with the foundation walls, which lets drain water from the walls and any foundation cracks, something a french drain cannot do.