Use a shop vacuum or other heavy duty vacuum cleaner to remove all dirt and debris from the basement floor.
Moisture coming up through basement floor.
The enemy of all basements is water and deciding to finish the bottom room of your home or frankly any room with a concrete floor can be risky.
Moisture around your home naturally seeps through porous concrete leaving any material in the room soggy and damaged.
The water table is higher during rainy periods and lower during dry spells.
Basement condensation occurs when warm moist air comes in contact with your cool basement walls and floor.
If the concrete floor of your basement is always wet there may be a number of causes.
Another source that can be thought of as internal is the moisture contained in new concrete after construction.
Common sources are humidifiers unvented clothes dryers showering and cooking.
Keep below grade excavations free of water to prevent potential reservoirs of moisture that can migrate upward through slabs.
The surface of the floor should be as smooth and clean as possible before applying the waterproofing materials.
When basements are finished these activities increase.
The pores of the concrete cracks in the floors and walls.
They thought they ve done whatever they can to prevent moisture from coming in by laying plastic around the house and fixing the gutters but i think water is still coming from under the ground and sweating the floor.
Most of these causes involve the water table outside your home which is the level where water stands at all times.
Concrete flooring often has moisture issues.
These can adversely affect a concrete slab on grade.
As the walls cool the warm air moisture is created just like condensation on a cold beer on a hot summer day.
Some of the potential flooring issues that can result from excessive moisture vapor transmission are.
This situation will cause the water table to rise sometimes to the point that water comes up through the basement floor and the basement floods.
There are many ways in which moisture can enter into a basement.
Excessive moisture below concrete slabs can cause structural degradation of soil bearing strengths and swelling and shrinkage of soil.
The tile is not sealed.
Moisture is generated inside of basements from people and their activities.
Other causes of a high water table and seepage into the basement.
This is a house on a hill and when it rains you ll start seeing dark spots on the travertine tile that was just put in.
Sweep the basement floor clean with a broom and dustpan.