Cracks are usually caused by settling or movement after a house is constructed and commonly appear at the corners of windows or any other place where the foundation has been "notched", and often the slightest amount of rainfall will start the cracks leaking.

If you were to investigate the conventional method of repair - excavating, veeing-out and packing with a quick setting cement - you'd find that it is quite expensive and a great deal of work.

There is a better way! For years now, engineers, architects and waterproofing professionals have known about polyurethane injection and its effectiveness in repairing concrete leaks. It has been proven worldwide in various applications including the repair of underground tunnels, water reservoir tanks and parking garages. The average homeowner has been left out in the dark, until recent years when the growth of polyurethane injection into the domestic market, revolutionized the industry.

A highly technical, yet relatively inexpensive repair procedure, polyurethane injection is performed from the inside of your home, eliminating the destruction of landscaping. There are no health concerns with this material as it is non-toxic and odorless.

The injection process is effected through the use of a high-pressure pump machine. This machine ensures 100 percent penetration of the polyurethane, filling the crack completely, from inside to outside, preventing water leakage . We do not use caulking guns or lever guns.

Ottawa Structural Residential Services Ltd. utilizes Polyurethane exclusively for the interior repair of foundation cracks. Polyurethane is a flexible, water reactive, non-shrink material. These are crucial factors when you consider that further movement or vibration could re-crack other types of repair materials such as epoxy.