How To Make Under Door Draft Stopper

Have you ever wondered how to make under the door draft stopper to fix that drafty door? Replacing carpet with wood or laminated flooring can create a draft under a door that was adjusted to glide easily over thick carpet. That one or two inch gap under the door can increase your energy cost significantly. An under the door draft stopper can stop the energy loss.

To make under door draft stopper, you will need:

  • Tape measure
  • ½ yard fabric
  • Thread
  • 1 inch foam pipe insulation
  • Razor knife
  • Sewing machine
  1. Measure the width of the door. Measure the thickness of the door. Measure the size of the gap between the bottom of the door and the floor. Determine the size to cut the fabric by multiplying the thickness of the door by two and adding twelve inches for the width. Use the width measurement of the door, the plus ½ inch seam allowance at each end (total one inch) and the six inches for overhang for the length. For instance, if your door is 27 inches, add six inches, then another inch totaling the length of your fabric to 34 inches. If your door is 1 1/2 inches thick, add 12 inches (6 inches twice to house the foam insulation) and 3 inches (1 ½ inches twice), plus another one inch seam allowance (1/2 inch twice) so your fabric width total is 16 inches. The fabric size, thus, is 16 inches by 34 inches. Cut the fabric to size.

  2. Measure and cut two equal lengths of foam insulation with a razor knife for the width of the door.

  3. Turn a ½ inch hem with wrong sides of the fabric together. Roll the ½ hem over once more and sew. Hem only one edge of the 16 inch side of the fabric.

  4. Fold the fabric lengthwise with right sides together and pin the edges. Sew the edges together with a ½ inch seam. Turn the fabric tube right side out.

  5. Insert the foam insulation into the fabric tube leaving a space in the middle between the insulation.

  6. Fold and tuck in the fabric overhang at the end of the insulation. Fit the draft stopper under the door. If the insulation tubes are too long, remove the insulation from the fabric tube and cut both pieces of insulation in ¼ inch increments until the fit is perfected. If the fabric is too loose to be snug against both sides of the door, remove the insulation tube, turn the fabric inside out and sew a ½ seam to narrow the fabric tube. Turn the fabric, insert the insulation tubes, and test the fit on the door. Repeat the step until the fit is perfected.


You can use any type of fabric for the draft stopper. Stretchy fabric works well but your measurements should be adjusted to make a tighter fit. Faux fur will give more protection by filling the gap better.



Be accurate with your measurements. If the foam insulation is cut too long, the door will not open easily.



“Look What You Can Make With Dozens of Household Items: Over 500 Pictured Crafts and Dozens of More Ideas!”, Kathy Ross and Hank Schneider, 2002.

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