Ventilate and dehumidify the area before during and after the installation because basement walls are usually susceptible to moisture.
Tile over basement wall.
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.
Tile is available in many different sizes and styles and the price range is equally broad.
Measure the distance from the edge of the wall to the edge of the last full sized tile installed on the row.
Be sure you double check the fit with the paper backing still on.
You can get this from construction or hardware stores.
Now use shears to cut where you marked and you ll have the perfect size piece for that opening.