[header] How to paint your basement floor [title] Make sure conditions are right before starting the project. [step] Concrete can be difficult to paint. It must be treated so paint will stick to it, and painting should only be done within a specified temperature range and dry conditions. 
[substeps] Test the humidity in your basement by taping a piece of plastic onto the floor and letting it sit for 24 hours. If condensation appears on the plastic, moisture is seeping through the floor.