Things You'll Need
Instructions
Decide how large you want your windows to be and measure the space where the window(s) will be installed. (See Tips for more information).
Using the proper power saw for the building material from which your basement walls were constructed, cut the opening(s) for the new window(s) from inside the basement. (See Tips for more information.)
Smooth the rough edges of the opening(s) with whatever tool(s) you need to use, depending on the type building material you are working with.
Remove the window kit(s) from the packaging and perform any necessary assembly, following the instructions provided with the kit(s). (See Tips for additional information)
From the outside of the house, set the window into the opening. Caulk between the areas where the fastening hardware will be installed and where the parts of the window that will overlap onto the outside wall.
Fasten one corner of the window, using the supplied mounting hardware, to hold it steady in the opening.
Check to see if the window is sitting level in the opening, and make any adjustments necessary. Then fasten the corner opposite to the one you fastened in Step 6.
Install any housing strips (may also be called flashing strips) and other building material (such as building paper) necessary for the mounting hardware and finishing strips, according to the instructions supplied with the kit(s).
Finish installing and fastening the window according to the instructions supplied with the kit(s).
Caulk around the outside edges of the window, once it has been completely installed.
Repeat Steps 5-10 to install other windows.