How to Replace a Fiberglass Screen on a Screen Door
Press the screen and the spline into the groove using the concave end of the splining roller.
Hold the roller at a 45-degree angle toward the inside edge of the groove and then roll downward to press the screen into the groove. Roll the first two sides in place and then insert the top and bottom sides.
Hold the screen taut across the frame as you roll it into place. Sags and wrinkles are about as attractive on screen doors as they are on people.