Choosing the right screen is important; first it must be very pliable and should have a sheen to it. The same holds true for the spline that holds the screening in. Screening comes in two common sizes and is measured by the weave 20/20 and 18/14the number of squares per inch. While 20/20 will reduce the size of insects intruding your space it will also cut considerably on airflow. 18/14 is the most widely used screening in the industry.

Screening is quite simple and you can screen from top to bottom or side to side. I prefer top to bottom then side to side as this allows for a super tight screen wall. I am right handed so I start at the top right corner.

Take the screen line it up approximately 5 to 6” parallel with the spline groove (have the spline in your left hand with the screen) take your roller and run it down the groove to set the screen. Next take the spline, set it in the groove with the screen and roll your 5 or 6” piece.

Now with your left hand take a length of screen 2 to 3' with the spline held by your forefinger and thumb pull the spline and screen together making sure your screen is an even 1” above the spline groove so the screen runs on the same row of squares. This eliminates a screen that is not square to the opening. As you become more accustom to rolling you can hold up to 3 feet of screen and spline for rolling. Cut the spline at the corner.

Next go to the bottom right corner set your screen and spline in the same manner. Now that the bottom is tacked in place you need to pull down on the screen as you roll the remainder of the groove. Cut the spline at the corner.

The procedure for the sides is the same. When the screening is completed take a utility knife lay on its side with the handle in the screened area and the blade facing the excess screen. Push the point of the blade into the excess screen, now with a smooth forward motion drag the blade along the spline (rubber gasket) holding the excess screen taught to allow a clean cut. With all four sides trimmed you just installed what should be a professionally looking screened opening.

When replacing a window screen you must be aware of the screen tension at all times, if you pull the screen with too much force you will pull the frame out of shape thus bowing the frame and rendering it ineffectual. Don't concern yourself with a tight screen, as it is better to have a loose fitting screen that remains a tight fit to the window opening. If you are really handy you can make a jig to lock all four corners in place, this will allow a tight screen without bowing the frame.