Burlap needs a heavy needle, a loose stitch, and patience with fraying

Burlap is a coarse, loosely woven fabric made from jute or similar plant fibers. It frays easily, resists needles, and pulls apart if you pull the thread too tight. Sewing it successfully means using a needle heavy enough not to bend, a stitch length loose enough not to bunch the weave, and accepting that the edges will fray no matter what you do. The fabric works best for projects where rough edges are part of the look—tote bags, wall hangings, placemats, upholstery backing—rather than garments that need a finished seam.

The challenge is that burlap's loose weave and stiff fibers push back against standard sewing equipment. A regular needle bends or snaps. Standard thread breaks under the friction of being pulled through so many fibers. A tight stitch bunches the weave instead of holding it flat. Once you adjust your needle, thread, and stitch settings to match the fabric, burlap becomes straightforward to work with.

Key Takeaways

  • Use a size 16 or 18 needle (topstitching or denim needle) because regular needles bend or break in burlap's dense weave.
  • Set your stitch length to 3.0 mm or longer to avoid puckering and thread breakage at the seam.
  • Stabilize burlap with tear-away stabilizer on the underside to prevent the weave from shifting as you sew.
  • Finish raw edges with a zigzag stitch, pinking shears, or a straightforward fold-and-stitch method rather than trying to prevent fraying.
  • Test your needle, thread, and stitch settings on a scrap piece before sewing your project.

Choose the right needle for burlap's tight weave

A standard universal needle (size 80/12 or 90/14) will bend or snap when pushed through burlap. The fabric's loose weave and stiff fibers require a needle with a stronger shaft and a larger eye to accommodate thicker thread.

A size 16 or 18 topstitching needle is the best choice. Topstitching needles have a deep groove and a wide eye designed to handle heavy fabrics and thick thread without breaking. A denim needle in size 16 or 18 works equally well. Both are made from hardened steel and can push through burlap without flexing. If you only have universal needles on hand, jump up to size 100/16 as a temporary solution, but expect more breakage.

Change your needle before you start. A needle that has sewn cotton or polyester for hours will be slightly dulled and more likely to snap in burlap. A fresh needle makes a visible difference in how smoothly the thread feeds and how few breaks you experience. Keep a few spare needles in your sewing kit—burlap will break at least one during a typical project.

Set your stitch length longer than you would for cotton

Burlap's loose weave means that a tight stitch (1.5 to 2.0 mm) will bunch and distort the fabric. The needle penetrates so many fibers at once that a short stitch pulls them together instead of holding them flat.

Start with a stitch length of 3.0 mm and test on a scrap. If the seam puckers or the thread breaks, increase to 3.5 mm or even 4.0 mm. A longer stitch also puts less strain on the thread, which reduces breakage. The trade-off is that a very long stitch is less find, so do not go longer than 4.0 mm for load-bearing seams like bag handles or stress points.

Reduce the presser foot pressure if your machine allows it. Standard pressure can compress the burlap too much and cause the weave to bunch. Many machines have a dial or lever on top of the presser foot; turning it down one or two notches often solves puckering without changing stitch length. If your machine does not have adjustable pressure, stabilizer underneath will do most of the work for you.

Stabilize the underside to prevent shifting

Burlap shifts and slides under the presser foot because the weave is so open. The needle can push fibers sideways instead of straight down, and the fabric can move out of alignment mid-seam.

Cut a piece of tear-away stabilizer (also called tear-away interfacing) slightly larger than your seam. Pin or baste it to the underside of the burlap along the seam line. Sew through both the burlap and the stabilizer. After sewing, tear away the stabilizer by hand—it is designed to shred cleanly without leaving residue.

Tear-away stabilizer costs a few dollars per roll and is available at any fabric store. It comes in different weights; medium weight works for most burlap projects. If you do not have stabilizer, a layer of tissue paper pinned underneath will do the same job, though you will need to pick out the tissue fibers after sewing. Stabilizer also reduces puckering and makes the seam sit flatter, so it is worth having on hand.

Use thread that matches the burlap's weight

Standard polyester or cotton thread (40 weight) is too thin for burlap and will break under tension. The thread snaps because it cannot withstand the friction of being pulled through so many stiff fibers.

Use topstitching thread (30 weight or heavier) or buttonhole thread, which are thicker and stronger. If you want the seam to be visible, topstitching thread in a contrasting color looks intentional. If you want it to blend, match the thread to the burlap's natural tan or brown.

Wind the bobbin by hand or use a slow bobbin-winding speed. Fast winding can twist heavy thread and cause it to break during sewing. Test the thread tension on a scrap before you commit to your project; burlap often needs slightly looser top tension than cotton does. If the top thread keeps breaking but the bobbin thread does not, loosen the top tension dial by one or two notches.

Finish raw edges with zigzag or pinking shears

Burlap will fray no matter what you do. The fibers are loosely bound, and cutting them releases them to separate. Trying to prevent fraying with a tight seam or fray-check liquid usually fails because the liquid soaks into the weave unevenly and the fibers still separate.

Instead, finish the edge in a way that looks intentional. A zigzag stitch along the raw edge catches some of the loose fibers and prevents them from unraveling further. Set the stitch width to 2.5 to 3.0 mm and length to 2.0 to 2.5 mm, and sew slowly so the needle catches the edge cleanly. The zigzag does not stop fraying entirely, but it slows it down.

Pinking shears (scissors with a zigzag blade) cut a zigzag edge that also slows fraying. They are faster than sewing and work well for projects where a decorative edge is acceptable. For a more finished look, fold the raw edge under by half an inch, press it, and stitch it down with a straight stitch or zigzag. This method hides the fraying inside the fold and gives the project a cleaner appearance.

Test on a scrap before sewing your project

Burlap varies in weight and weave density depending on the grade and source. A piece labeled "burlap" from one supplier may sew completely differently from another. Testing takes five minutes and saves you from ruining a finished project.

Cut a 6-inch square of your burlap and a matching piece of stabilizer. Thread your machine with the needle and thread you plan to use. Sew a straight seam down the middle at your chosen stitch length and tension. Look for puckering, thread breakage, and how the seam sits. If the thread breaks, switch to a heavier needle or thicker thread. If the seam puckers, increase stitch length or reduce presser foot pressure. Repeat until the seam looks smooth and the thread does not break.

Keep the test scrap with your project notes. If you sew burlap again months later and forget what settings worked, you can refer back to it instead of starting from scratch.

Frequently Asked Questions

Can I use regular thread and a regular needle on burlap?

Regular thread and needles will work on lighter burlap, but you will experience frequent breakage and bent needles. A size 16 topstitching needle and 30-weight thread are worth the small cost and will save you frustration and time.

Why does my burlap pucker when I sew?

Puckering happens when the stitch is too tight for the loose weave, or when presser foot pressure is too high. Increase stitch length to 3.5 or 4.0 mm, reduce presser foot pressure, or add tear-away stabilizer underneath. Test each change on a scrap to see which one works.

How do I keep burlap from fraying at the edges?

You cannot stop burlap from fraying completely, but you can slow it. Use a zigzag stitch along the edge, cut with pinking shears, or fold and stitch the edge under. For projects where fraying is part of the look, leave the edges raw and let them fray naturally.

What is the best stitch for sewing burlap seams?

A straight stitch at 3.0 to 4.0 mm length works for most burlap projects. A zigzag stitch is useful for finishing edges. Avoid decorative stitches, which can break thread or pucker the fabric.

Do I need to wash burlap before sewing?

Burlap does not require pre-washing, but it may shrink slightly if washed later. If your finished project will be washed, test a scrap in the same water temperature and detergent you plan to use, then adjust your seam allowances if needed.