How to Avoid 3 Common Mistakes When Buying Blackout Curtains

A dark, quiet bedroom isn't a luxury; it's a necessity for a good night's sleep. Whether you're a light sleeper, work shifts, or simply want to block out streetlights, blackout curtains seem like the perfect solution. Yet, the search is often frustrating. Many products promise more than they can deliver.

As a Joybuy Product Recommendation Officer, I see where things go wrong every day. To help you avoid a bad purchase, we'll discuss the most common pitfalls and what you really need to look for.

Pitfall 1: The "blackout" myth The term "blackout" is not protected. Many curtains sold under this label are actually just "dim-out". They dim the light but don't make the room completely dark. This leads to disappointment, especially if you're sensitive to the first rays of sun in the morning.

Pitfall 2: Exaggerated claims about insulation and sound "Thermal" and "noise-reducing" are popular marketing terms. While a thick curtain can certainly help reduce draughts and dampen sound somewhat, the effects are often less spectacular than promised. The actual performance depends on concrete specifications, not just a label.

Pitfall 3: Wrong size, guaranteed light gaps Ready-made curtains are practical, but the wrong size negates the entire effect. Curtains that are too narrow or too short will let light seep in from all sides, meaning you'll still be woken up by unwanted light.

What to Look For: The Specifications That Really Matter

To bypass these pitfalls, you need to look beyond the product title. Focus on the following three objective characteristics.

Blackout Level: Not every 'blackout' curtain is the same

The effectiveness is often expressed as a percentage. Pay close attention to the difference:

• Dim-out (60-85% light-blocking): Suitable for living rooms or if you want to make a room darker but don't need complete darkness. Lighter colours often fall into this category.
• Blackout (85-95% light-blocking): A popular choice for most bedrooms. These curtains block almost all direct sunlight.
• 100% blackout: These curtains often have a special coating or an extra-dense weave to block all light. This is the recommended option for light sleepers and children's rooms.

Fabric and Weave Technique: The secret behind insulation and sound dampening

The functional properties of a curtain are determined by its material and construction.

• Triple Weave Technology: Many high-quality blackout curtains use this technique. A black, dense yarn is woven between two layers of fabric. This middle layer is key to blocking light and also provides thermal curtains and noise-reducing curtains benefits.
• Fabric Weight (g/m?): A higher weight (e.g., 230 g/m?) indicates a thicker, denser fabric. This directly contributes to better light-blocking, insulation, and sound dampening. A heavier curtain is often a better investment.

Hanging System and Dimensions: The key to a seamless fit

A perfectly fitting curtain maximises the blackout effect.

• Hanging System:Ready-made curtains with eyelets (also known as grommets) are easy to install and glide smoothly over a rod. Curtains with heading tape offer more flexibility for track systems but require hooks.
• The right width: Measure the width of your window or track and multiply it by 1.5 to 2.6. This ensures an elegant drape and prevents light from seeping in at the sides. A curtain that is stretched too tight will never provide a good blackout effect.
• The right length: Decide whether the curtain should hang to the windowsill, below it, or to the floor. For maximum blackout and insulation, a floor-length curtain is the recommended choice.

Our Recommended Product Picks

Based on these criteria, we have selected a number of products that suit different needs.

MATCH FOR: The Light Sleeper

PONY DANCE 100% Blackout Linen Curtains, Natural

Why This Fits Their Persona: Offers maximum light-blocking for an undisturbed night's sleep. Essential for those sensitive to morning light, living in an urban environment, or working shifts.

How It Avoids the Trap

This curtain is specifically designed for 100% blackout, going beyond standard 'dim-out' curtains that often still let some light through.

Key Advantage & Pros

Combines complete darkness with the stylish, natural look of linen. The thermal properties contribute to a stable room temperature.

MATCH FOR: The Energy-Conscious Homeowner

PONY DANCE Blackout Curtains, Sage Green

Why This Fits Their Persona: The heavy fabric and thermal properties help lower the energy bill by keeping the room warmer in winter and cooler in summer. A practical investment for every season.

How It Avoids the Trap

The specifications are clear: a heavy fabric of 230 g/m? and triple-weave technology provide concrete thermal curtain properties, rather than vague marketing claims.

Key Advantage & Pros

Made from at least 50% recycled material and certified with the Global Recycled Standard and OEKO-TEX STANDARD 100. A more sustainable choice.

MATCH FOR: The Practical Decorator

PONY DANCE Foil Printed Blackout Curtains, Greyish White

Why This Fits Their Persona: Combines functionality with a modern design. The ready-made curtains with eyelets make installation simple, without the hassle of hooks or tracks. Ideal for a quick upgrade to the bedroom or living room.

How It Avoids the Trap

These curtains are ready to use right away, and the clear dimensions help prevent light gaps, provided the correct width is chosen according to the recommended measuring instructions.

Key Advantage & Pros

High blackout level (85-95%) with a stylish silver foil print that adds a subtle decorative element without being overpowering.

Frequently Asked Questions

How do I measure the correct size for blackout curtains?

It's simpler than you think.

1. Width: Measure the width of the curtain rod or track. Multiply this number by 1.5 for a light pleat or by 2 to 2.5 for a fuller, more luxurious look and better blackout. The total width of the curtain panels should match this.
2. Length: Measure from the top of the rod or track to the point where you want the curtains to end (e.g., windowsill, below it, or the floor). For curtains with eyelets, measure from the top of the rod and add about 2-3 cm.

Do blackout curtains really make a room 100% dark?

Even a curtain made of 100% blackout material can let light in at the edges. This is called 'light leakage'. To minimise this, you can choose a rod that extends at least 15 cm on both sides of the window. A 'wrap-around' rod, which allows the curtains to sit flush against the wall, is also an effective solution.

Do blackout curtains also help with noise?

Yes, they can dampen sound. The heavy, dense fabric of noise-reducing curtains absorbs sound waves, which reduces echo in the room and muffles outside noise. Don't expect miracles; they are not a substitute for double-glazing, but they can make ambient noise noticeably more comfortable, especially in combination with their insulating properties.

Written by the Joybuy Product Recommendation Officer. Our mission is to provide you with objective and practical purchasing advice, so you can make choices that fit your life.