Sometimes floor number 1 may be the lowest basement level.
Is there a void under basement floor.
There may also be a storage floor called cellar below lower ground.
Garage floors show the least visible sign that there is a void under them.
Slabjacking is used to prevent everything from porch floors to patios and basement floors from shifting.
In this situation the lower level is called lower ground the main floor is called upper ground and floors above it are numbered serially from 1.
Tile is available in many different sizes and styles and the price range is equally broad.
In that case the ground floor may be numbered 2 or higher.
When you drive over a void you will hear the shallowness of the space under the floor.
The void that you are feeling is normally caused by repeated heaving and deterioration of the basement floor slab over many years and some erosion of the sub slab soil.
As the floor slab heaves slightly usually after repeated heavy rains or due to the spring thaw it can crack and will rarely recede all the way back to its original position.
Installing a tile floor in all or part of your basement lets you have some fun with design while still quickly covering up existing concrete floors.
Small cracks may also be visible in.