Blackout Fabric – Room-Darkening Fabric by the Yard | JOANN
Our premium blackout lining fabric delivers professional-grade light blocking for curtains, drapes, and window treatments. This tightly woven polyester construction blocks 99% of incoming light while providing superior insulation against heat and cold.
Ideal for bedrooms, nurseries, home theaters, and any space requiring complete darkness. The neutral ivory finish works behind any decorator fabric, and the durable weave withstands repeated washings without losing opacity.
Fabric specifications
How Blackout Fabric Works
JOANN’s blackout fabric achieves superior light blocking through specialized construction techniques that differ from standard fabric weaves. Our premium options use multiple layers or bonded foam backing to create an impenetrable barrier against sunlight, streetlights, and early morning glare.
The tightly woven polyester fibers in our blackout lining create microscopic coverage that prevents light penetration while maintaining breathability. This construction also provides thermal insulation, keeping rooms cooler in summer and warmer in winter by blocking heat transfer through windows.
Choosing the Right Blackout Fabric for Your Project
Match your fabric selection to your specific window treatment goals and sewing skill level. For lined curtains or drapes, choose our 54-inch blackout lining fabric and pair it with any decorator face fabric from our collection. This approach gives you unlimited design options while ensuring professional light-blocking performance.
If you prefer a simpler construction, our textured blackout drapery fabric eliminates the lining step entirely. The bonded two-layer design means you cut and sew just one fabric layer, saving time and reducing bulk at seams. This option works beautifully for grommet curtains, rod-pocket panels, and pinch-pleat drapes.
Sewing and Care Instructions
Our blackout fabrics sew easily on standard home sewing machines using polyester thread and a universal size 14 or 16 needle. Adjust stitch length to 3.0-3.5mm for smooth seams that won’t pucker. Press seams open using medium heat and a pressing cloth to protect foam-backed varieties.
Wash premium blackout lining and budget blackout fabric in cold water on gentle cycle before cutting to pre-shrink. Tumble dry on low heat or hang to dry. The textured drapery fabric with bonded backing requires spot cleaning or dry cleaning only to preserve the foam layer integrity. Never use bleach or fabric softener on any blackout fabric as these chemicals can degrade opacity.
Coordinating Fabrics for Light Control Projects
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Blackout Fabric Questions
Our premium blackout lining fabric and budget blackout fabric are both machine washable in cold water on a gentle cycle. Use mild detergent and tumble dry on low heat or hang to dry. We recommend washing before cutting and sewing to allow for any shrinkage.
The textured blackout drapery fabric with bonded foam backing requires spot cleaning or professional dry cleaning only. Machine washing can separate the bonded layers and reduce light-blocking effectiveness. Always check the care label on your specific fabric before washing.
For a single curtain panel, measure your window width and multiply by 1.5 to 2 for proper fullness, then divide by your fabric width. Add 8-10 inches to your length measurement for hems and headers. A typical 36-inch wide by 84-inch long window requires approximately 3 yards of 54-inch blackout lining fabric for two panels with 2x fullness.
Our fabric specialists in-store can help calculate exact yardage for your specific project. Bring your window measurements and we’ll ensure you purchase the right amount of JOANN’s blackout fabric the first time.
Blackout lining fabric is designed to layer behind your chosen decorator fabric, giving you unlimited pattern and color options for the front of your curtains. The ivory lining provides the light-blocking layer while remaining hidden from view.
Blackout drapery fabric features both the decorative face and light-blocking layer bonded together in one material. This eliminates the need for separate lining, reducing sewing time and bulk. Choose lining when you want a specific face fabric, or choose drapery fabric for simpler construction with our textured patterns.
Our premium blackout lining blocks 99% of light, while the textured blackout drapery fabric blocks 100% when properly installed. The budget blackout fabric blocks 85-90% of light. Complete darkness also depends on installation factors like rod placement, curtain length, and edge sealing.
For maximum darkness, mount your rod close to the ceiling and extend brackets well beyond the window frame. Allow curtains to puddle slightly on the floor or hang 1/2 inch above to prevent light gaps. Consider adding blackout shades underneath curtains for zero-light environments like nurseries or home theaters.
Yes, standard universal needles in size 14 or 16 work perfectly for all JOANN’s blackout fabric varieties. The polyester construction doesn’t require specialty needles like leather or denim fabrics do. Use polyester thread for best results since it matches the fabric’s stretch properties.
For the textured blackout drapery fabric with foam backing, consider using a walking foot or Teflon presser foot to prevent the layers from shifting during sewing. This attachment isn’t required but makes seam sewing easier, especially for beginners.
All of our blackout fabrics offer thermal insulating properties that help regulate room temperature. The dense weave and multiple layers trap air, creating a barrier against heat transfer through windows. This keeps rooms cooler in summer by blocking solar heat gain and warmer in winter by preventing heat loss.
Customers typically notice a 5-10 degree temperature difference in rooms with blackout curtains installed. The textured blackout drapery fabric with foam backing provides the highest insulation value, while our premium lining offers excellent thermal properties when paired with medium to heavyweight decorator fabrics.
JOANN accepts returns of uncut yardage with your original receipt within 90 days of purchase. Once fabric has been cut to your specifications, it cannot be returned unless defective. We recommend calculating your yardage needs carefully before purchase, or consider buying slightly extra for insurance.
Our team members can help you calculate exact requirements in-store to minimize waste. If you do end up with leftover JOANN’s blackout fabric, consider smaller projects like throw pillow backs, table runners with light-blocking properties, or donation to local sewing groups and schools.