Best Ways to Seal Blackout Curtains at the Edges

When it comes to achieving that perfect, dark sanctuary for a peaceful night's sleep, simply purchasing blackout curtains may not be enough. Sealing those edges effectively is key! In this article, we'll explore the best ways to seal blackout curtains at the edges to ensure your room remains pitch-black, providing you with uninterrupted, quality sleep. Get ready to discover tips, tricks, and solutions that you can easily implement in your own home!

One of the most common issues with blackout curtains is light leakage from the edges. Whether you've invested in top-tier curtains from retailers like us at Sleepout, or you have a different brand, securing those edges can make a monumental difference. Let's dive deeper into some innovative solutions.

Mother and baby looking at grey blackout curtains

Suction Cups

Suction cups are a fantastic and simple method to hold blackout curtains snugly against the wall. By attaching the cups to the window frame or sill, the curtains can be anchored, preventing any light from sneaking through. Our Extra Sleepout Suction Cups are perfect for this purpose! You'll marvel at how such a small tool can make a significant difference in achieving total darkness.

Magnetic Strips

Magnetic strips are another excellent solution to seal the edges of your blackout curtains. By sewing or adhering lightweight magnetic strips along the edges of the curtain and the window frame, you can create an airtight seal that blocks out light. This method is particularly effective when you have metal window frames.


Velcro strips can provide a similar effect to magnetic strips but without the need for metals. Attach one side of the Velcro to the curtain edge and the other side to the wall or window frame. Velcro's secure grip ensures the curtains stay tightly shut, even when the windows are opened and closed.

Adhesive Strips

Using adhesive strips is a user-friendly and flexible method to ensure no light leaks through. Stick these strips around the window frame and press your curtains firmly against them. Our Sleepout Adhesive Strips are specifically designed to make installation easy and durable, giving your blackout curtains a professional, sleek seal.

Mother putting up blackout curtains while holding a baby

Curtain Rods with Returns

Investing in a curtain rod with "returns" is a great longer-term solution. These rods have curved ends that ensure the curtains are held close to the wall, minimizing light leakage. This small modification can substantially improve the seal at the edges of your blackout curtains.

Weighted Hem

Sewing or adding weights to the bottom hem of your curtains can help gravity do its work. The additional weight naturally pulls the curtains downward and closer to walls and window ledges, minimizing gaps where light could seep through.

Double Layer Curtains

Layering your blackout curtains with an additional sheer or thicker curtain can improve the seal significantly. The extra fabric absorbs excess light and provides an extra layer of insulation to keep your room darker and quieter.

Clip Rings

Sometimes, clip rings can be more effective than traditional curtain rings because they offer more points of contact. Attach clip rings along more points on your curtains, drawing them closer to the window frame and minimizing gaps where light can penetrate.

A blacked out window with two blackout curtains

Blackout Blinds and Shades

For those willing to invest a bit more, combining blackout curtains with blackout blinds or shades can provide the ultimate blackout experience. Blinds or shades will minimize light from the top and bottom, while the curtains block out light from the sides.

Clear Caulking

Clear caulking around the window frame can also help seal little gaps where light could seep through. This method works particularly well with curtains hung closer to the wall. Apply clear caulking around any gaps, ensuring the curtain sits flush against the wall or frame.

Custom Fit Curtains

Although more expensive, custom-fit blackout curtains tailored to the exact dimensions of your windows ensure a near-perfect seal. Custom fits reduce the need for additional hacks and provide an elegant, clean look.

A bed with a 'Sleepout' bag on it

At Sleepout, we are passionate about your sleep quality and hope our tips can help you achieve that perfect darkness your body craves for restorative rest. For those in search of the most adaptable and superior solutions, we highly recommend our Sleepout Portable Blackout Curtain and Sleepout Home Blackout Curtains.

Whether you're converting a nursery into a sleep haven, preparing a guest room for visitors, or just improving your own room for better rest, these techniques for sealing blackout curtains can make a profound difference.

Before and after applying blackout curtains

Here's a quick recap of what we've covered:

  • Suction cups and adhesive strips as easy, effective fixes
  • Magnetic and Velcro strips for stronger seals
  • Innovative rods and weighted hems for long-lasting solutions
  • Double layer curtains, blinds, and shades for enhanced darkness
  • Clear caulking and custom-fit curtains for the ultimate seal

By implementing these tips and perhaps combining a few of these techniques, you can transform any room into the perfect sleep sanctuary, ensuring you wake up refreshed and ready to take on the day. Sweet dreams!

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