Lowering Garage Floor

Firstly you would need to establish the build up of the floor and then lower the floor by the same amount and replace like for like this would require laying a new membrane.

Lowering garage floor.

If your garage floor is sealed the water will eventually evaporate. In fact for some interior floors it s just a matter of pouring leveling compound out and letting it find its own level. That depends how deep the foundation walls go. A dewatering channel often installed on the newly created bench ledge will also be installed to help capture any seepage that may come through the original foundation.

We are in the midst of renovating all the landscaping and masonry work in the front of the house also a very steep slope and the landscape architect has made the suggestion of lowering of the slope of the driveway by lowering the garage floor about 2 feet. Then install the forms to make an exposed edge that is straight and smooth and pour the floor and hauch in the second step. Concrete floors can t be sealed from the underside. Apply leveling compound in certain spots.

To lower the floors to give an extra18 inches you would have to excavate a minimum of30 inches to allow for hardcore insulation concrete this will take you under the footings sugest you abandon this idea regardsterry. Lastly a layer of gravel is poured leveled and is covered by a vapor barrier and reinforcing grid readying it for the newly poured concrete floor. That s why there should be a moisture barrier between the soil and the floor. Leveling compound is the classic and the easiest to fix a floor that is uneven.

If you pour a quarter cup of water on your garage floor it should disappear in about half a minute. If they extend past the depth you wish to lower the floor it s a pretty straightforward task of removing the floor and excavating the dirt and stone to the depth you want. One thing to consider is drainage if you lower the floor would this increase the risk of flooding or is there suitable drainage measures in place. If you want to go deeper than the walls extend you have to underpin the walls.