Sewing drapes with grommets means stitching a fabric panel, inserting metal rings into the top hem, and hanging the whole thing on a rod that passes through those rings

The grommet method is faster than sewing traditional pleats or tabs because the rings do the work of holding the fabric to the rod. You make a single flat hem at the top, punch holes through it at even intervals, and press metal rings into those holes. The drapes hang in loose, modern folds and slide easily along the rod when you open and close them.

This method works best for lightweight to medium-weight fabrics—cotton blends, linen, and decorator fabrics up to about 54 inches wide. Heavy velvet or blackout fabric can be too stiff for the rings to hold properly. You will need a grommet kit (which includes the rings and a setting tool), a sewing machine, basic measuring tools, and about four to six hours for a pair of standard-sized drapes.

Key Takeaways

  • Grommets are metal rings you set into a finished hem at the top of the drape; the curtain rod slides through them to hang the fabric.
  • You need a grommet kit with the correct ring size for your rod diameter—measure your rod before buying, because rings come in sizes from 1.5 inches to 2.5 inches.
  • The hem at the top must be at least 1.5 inches deep to hold a grommet securely; most drapes use a 2-inch hem for this reason.
  • Space grommets 4 to 6 inches apart across the width of the fabric; uneven spacing creates visible gaps and sagging between rings.
  • The grommet-setting tool is mechanical and requires firm, straight pressure—practice on scrap fabric first to avoid crushing the rings or tearing the hem.

Measure your rod and choose the right grommet size

Before you buy anything, measure the diameter of your curtain rod. Grommets come in standard sizes: 1.5 inches (fits a 1.25-inch rod), 2 inches (fits a 1.5-inch rod), and 2.5 inches (fits a 2-inch rod). The ring needs to be slightly larger than the rod so the fabric slides smoothly. If you buy the wrong size, the drapes will either be too tight to move or will slip off the rod.

Write down the rod diameter and take it with you when you shop for the grommet kit. Most kits include 8 to 12 rings and a setting tool. Buy a kit with at least as many grommets as you need for both panels, plus two or three extras in case you damage one during installation. The kit will also include instructions specific to that brand—follow those for the exact pressure and technique, because some tools work slightly differently.

Cut and prepare your fabric panels

Measure from the top of the rod down to where you want the drapes to end—usually the floor, the windowsill, or about 1 inch above the floor for a clean line. Add 2.5 inches to that measurement: 2 inches for the top hem that will hold the grommets, and 0.5 inches for a bottom hem. Cut your fabric to that length.

For the width, measure the rod from end to end and multiply by 1.5 to 2, depending on how full you want the drapes. Thinner fabrics look better at 2 times the rod width; heavier fabrics work at 1.5 times. Cut two panels to that width (or one panel if you are making a single drape). Trim the selvage—the finished edge on the sides of the bolt—off both sides of each panel, because it is tighter than the rest of the fabric and will pucker.

Sew the side hems and bottom hem

Fold each long side of the fabric inward by 0.5 inches, press with an iron, then fold again by another 0.5 inches and press. Sew along the inner fold with a straight stitch, using a thread color that matches the fabric. Repeat on the other long side. These narrow side hems keep the fabric from fraying and create a clean edge.

At the bottom, fold the fabric up by 1 inch, press, then fold up again by another 1 inch and press. Sew along the inner fold with a straight stitch. This double hem is stronger than a single fold and looks professional. Press all hems flat with an iron before moving to the top hem.

Create the top hem and mark grommet positions

Fold the top edge of the fabric down by 1 inch toward the wrong side (the back), press with an iron, then fold down again by another 1 inch and press. This creates a 2-inch hem. Sew along the bottom edge of this fold with a straight stitch, sewing parallel to the top of the fabric. This stitching line holds the hem in place and creates a channel that will support the grommets.

Now mark where each grommet will go. Measure the width of the fabric and divide it into equal sections—usually 4 to 6 inches apart. Mark the center of each section with a fabric pencil or chalk, measuring down from the top of the fabric by 1 inch (the center of your 2-inch hem). Use a ruler to make sure the marks are straight across. Uneven spacing will be visible when the drapes hang, so take time with this step.

Punch holes and set the grommets

Use the hole punch tool that came with your grommet kit to punch a hole at each marked spot. The punch is usually a metal tube that you place over the mark and strike with a hammer or mallet. Punch straight down with firm, even pressure. The hole should be clean and roughly the size of the grommet's inner ring. If the hole is ragged or too large, the grommet will not hold.

Place the grommet ring into the hole from the front of the fabric (the side that will face the room). The ring has a flat side and a ridged side; the flat side faces outward. Slide the setting tool over the ridged side and press down firmly with a hammer or mallet, using straight, even pressure. You should hear or feel a click when the ring is fully set. The two halves of the ring will compress together and lock the fabric between them. Do not rush this step—uneven pressure can crush the ring or tear the fabric.

Set all grommets before hanging the drapes. Work on a hard, flat surface like a table or workbench, not on carpet or a soft surface, because the setting tool needs a solid backing to work properly.

Hang the drapes and adjust the folds

Slide the curtain rod through all the grommets on both panels. If the rod is very long or the drapes are heavy, have someone help you hold the weight while you position the rod in the brackets. The drapes should hang in loose, even folds from the rod.

Step back and look at how the fabric falls. If the grommets are evenly spaced and the hem is straight, the folds should be symmetrical. If you see a gap or sag between two grommets, it usually means those two grommets are farther apart than the others—you can adjust spacing slightly by gently pushing the fabric along the rod, but if the problem is severe, you may need to remove and reset one or two grommets. If a grommet is damaged or set unevenly, you can carefully pry it out with a flat tool and replace it with a spare from your kit.

Frequently Asked Questions

Can I use grommets on fabric that is already hemmed?

Yes, but only if the existing hem is at least 1.5 inches deep. Measure the hem depth before you start. If it is shallower than that, the grommet will not have enough fabric to grip and may pull through. If the hem is deep enough, mark and punch your holes through the existing hem and set the grommets the same way.

What should I do if a grommet is set crooked?

A slightly crooked grommet will not affect how the drapes hang, but if it is very tilted, you can remove it by prying gently with a flat screwdriver or butter knife and replace it with a spare. Work slowly to avoid tearing the fabric. If you do not have a spare, you can leave the crooked grommet in place—it will be less noticeable once the drapes are hanging.

How far apart should grommets be?

Space them 4 to 6 inches apart across the width of the fabric. Closer spacing (4 inches) creates more folds and a fuller look; wider spacing (6 inches) creates fewer, larger folds. Measure the total width and divide evenly so the spacing is consistent—uneven spacing is visible and looks unfinished.

Can I use grommets on blackout or thermal fabric?

Blackout and thermal fabrics are usually too heavy and stiff for standard grommets to hold securely. The weight of the fabric can pull the rings out of the hem over time. For these fabrics, consider sewing a rod pocket (a channel at the top that the rod slides through) or using a track system instead of a rod.

Do I need to seal the holes after punching them?

No. The grommet ring itself seals the hole and prevents fraying. Once the ring is set, the fabric is locked between the two halves of the ring and will not fray or tear at that spot.