How to Make a Double-Sided Door Draft Stopper

Measure the width of the bottom of the door. Measure the thickness of the bottom of the door. For this example, the door measures 36 inches wide and 2 inches thick.

Figure the dimensions and cut the duck cloth in a long rectangle. The rectangle should be 2 inches longer than the width of the door by the thickness of the door plus 12 inches. The example fabric rectangle will measure 38 inches by 14 inches. You can further customize the draft stopper to the thickness of the door during the last steps, if necessary.

Hem the short edges of the rectangle by folding under half-inch twice on each short edge so the cut edge is folded inside. Stitch along the short edges to hold the folds in place. The example hemmed rectangle now measures 36 inches, the width of the door, by 14 inches.

Narrowly hem each long edge by folding under quarter-inch along each long edge and sewing. Fold the rectangle in half so the fold is lengthwise. Iron the fold to mark it, then open out the rectangle. With a pencil or tailor’s chalk and a straight edge, mark a line half the thickness of the door on each side of the center ironed fold. The distance from line to line after you draw them should be the same as the door's thickness. For example, the lines will be 2 inches apart, with the ironed fold running down the center between them.

Fold each long edge so the quarter-inch hemmed edge meets the lines you drew, and pin them in place. Sew the quarter-inch hemmed edges near the drawn lines, creating two long fabric tubes and a flat center section. The flat center section slides under the door, and the tubes hold the insulation.

Cut each piece of foam pipe insulation the width of the door. For the example, the insulation should be cut to 36 inches. Insert the pieces of foam pipe insulation into the fabric tubes.

Open the door. Slip the flat part of the fabric under the door so the tubes of insulation align with the door on both sides. The draft stopper should stay in place and slide across the floor as you open or close the door.