Blackout vs Blockout vs Sheer: What's the Difference?
July 18, 2025When it comes to choosing window furnishings, fabric type makes a big difference—especially in how much light gets through. The terms blackout, blockout, and sheer are often used interchangeably, but they each offer different levels of light control, privacy, and functionality.
In this guide, we'll break down what each fabric type means and where they work best in your home.
What Are Blackout Curtains?
Blackout curtains or blinds are designed to completely eliminate light from entering a room. They're ideal for bedrooms, nurseries, or media rooms where complete darkness is preferred.
- Typically have a thick, triple-weave or foam backing
- Can reduce outside noise and provide thermal insulation
- Best for shift workers or anyone who needs to sleep during the day
What Are Blockout Curtains?
Blockout fabrics significantly reduce light but may not eliminate it completely. The term is commonly used in Australia to refer to heavy fabrics that stop most—but not all—light from entering.
- Great for living rooms, bedrooms, and offices
- Available in a wide variety of colours and textures
- Can be used alone or layered with sheers for added softness
Note: Some brands use "blackout" and "blockout" interchangeably, so always check the fabric spec or test a sample.
What Are Sheer Curtains?
Sheers are lightweight, translucent fabrics that diffuse sunlight while maintaining daytime privacy. They soften a space and are ideal for creating an airy, relaxed look.
- Perfect for open living areas and spaces with beautiful outdoor views
- Provide privacy during the day but allow visibility into the room at night
- Often layered with blockout or blackout curtains for flexibility
Which One Is Right for You?
The right choice depends on your room's function, light requirements, and style preferences:
| Need | Best Option |
|---|---|
| Complete darkness | Blackout curtains or blinds |
| Light control + privacy | Blockout curtains or roller blinds |
| Soft light + day privacy | Sheer curtains |
| Versatile styling | Layered sheer + blockout combo |
Need Help Choosing the Right Fabric?
At BMAC Window Furnishings, we bring samples to your home and help you choose the perfect solution for your space and lifestyle. Whether you need full darkness, soft filtered light, or a flexible layered option—we've got you covered.
👉 Book a free in-home consultation and explore the difference for yourself.
