HVAC Duct Filling

Sub-slab HVAC Duct Filling, Fairfax, Virginia



Sub-slab HVAC ductwork failed, causing voids below the interior floor of the home. Customer was concerned about animal and water problems that may result.


No access was possible through the floor.


High density polyurethane injection into the ducts via openings in floors and walls for vents and cold air returns. Material was also injected into ducts from inside the basement, where the ductwork entered the basement from under the adjacent first floor slab area.


Concrete Jack foam jacking crew injected high density polyurethane to fill the ductwork and abandon it in place.

The customer was provided with a 25 year warranty against future settlement.