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Blackout Fabric

What is Blackout Fabric?

Blackout fabric is a curtain or interior fabric developed to block a high percentage of incoming light. The blackout effect is usually created through a dense weave, multiple fabric layers or a special coating on the back of the fabric. Depending on the quality, blackout fabrics can range from dim-out fabrics that reduce light to full blackout qualities that block almost all light.

Unlike decorative curtain fabrics, blackout fabric is chosen primarily for function. It can still have an attractive appearance, but its main purpose is to darken a room, provide privacy and improve comfort. Some blackout fabrics are plain and minimal, while others are available in decorative colours, textures or printed designs.

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Specifications

  • Construction Dense woven fabric, often coated or multi-layered
  • Composition Usually 100% polyester, sometimes with acrylic coating or backing
  • Fabric weight Light to medium, commonly around 65–230g/m² depending on quality
  • Stretch No stretch, woven fabric
  • Abbreviations PES = polyester, PAC = acrylic coating where applicable
  • Appearance Dense, smooth or lightly textured, often matte with functional backing

Properties of the fabric

Blackout fabric can be woven, coated or made with multiple layers. The light-blocking effect usually comes from a dense structure, an opaque yarn system or a special backing. Some qualities block almost all light, while others are better described as dim-out rather than full blackout.

The fabric usually has little to no stretch and is handled as a stable interior fabric. Heavier qualities can have more body and less fluid drape than standard curtain fabrics. Coated blackout fabrics can be sensitive to sharp folding, high heat and needle marks.

Applications

Care Instructions

Care depends on the coating and finish. Many blackout fabrics should be cleaned carefully at low temperature or professionally cleaned. Do not bleach. Avoid high-temperature tumble drying, as heat can damage coatings or backing layers. Iron only on the front side at low temperature if allowed by the care label, and never iron directly on a coated backing.

Certifications

OEKO-TEX Standard 100 may be available depending on the specific article. For hotel, public building or contract interior use, also check whether flame-retardant certification or other technical standards are required.

Practical Tip

When choosing blackout fabric, check whether the fabric is full blackout or dim-out. Full blackout is best for bedrooms, hotels and spaces that need strong light control, while dim-out fabrics are suitable when you want privacy and reduced light without complete darkness.

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Written by

Dave Van der Steen Nooteboom Textiles

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