The Complete Guide to Ultra Blackout Blinds | 247 Blinds

If you're serious about blocking out light, ultra blackout blinds are the ultimate game-changer. Unlike standard blackout blinds, these come with a fully enclosed frame that stops light from sneaking in at the sides, top, or bottom. The result? Total darkness, better insulation, and a more energy-efficient home. At 247 Blinds, our Ultra Blackout blinds come in a range of styles to suit any space, so you can enjoy uninterrupted sleep, movie nights, or daytime naps in complete comfort.

What are Ultra Blackout Blinds?

Ultra Blackout blinds take darkness to the next level. Unlike standard blackout blinds, which can let in light around the edges, these feature a fully enclosed frame that fits snugly in your window recess. That means no annoying morning rays, no street lights shining through, just pure, undisturbed darkness.

Key features include:

• Honeycomb pleated blackout fabric – Blocks out light while trapping air for extra insulation.
• Full-frame design – Prevents light leakage from all sides, plus optional foam side strips for a flawless seal.
• Cordless, tensioned controls – Child-safe by design, no dangling cords.

Perfect for bedrooms, nurseries, home cinemas, and shift workers, ultra blackout blinds are especially useful in the summer months, when the sun decides to make an early entrance. 

Standard blackout blinds – like rollers, Romans, or blackout curtains – do a great job of dimming a room, but they don’t eliminate light completely. Even when placed far back in the recess or overlapping the window, pesky slithers of light can find their way through.

Ultra Blackout Blinds solve this problem with:

• A full-frame system that blocks light from all angles.
• Additional foam strips to fill in any tiny gaps.
• Energy-efficient honeycomb pleats that also help regulate room temperature and reduce noise.

If you want absolute darkness, this is the way to go.

How do Ultra Blackout blinds work?

It’s all in the design! Ultra Blackout blinds combine smart engineering with stylish functionality:

• A pleated thermal blackout fabric sits on a tensioned internal cord system inside a fully enclosed frame, ensuring a taut and seamless finish for effective blackout.
• The snug-fitting frame seals off your window recess, preventing light leaks.
• Foam side strips are included to sit behind the frame and cover any small gaps if your window recess isn’t perfectly square, ensuring a complete light seal and enhancing insulation.
• A bottom bar with a soft brush edge further prevents light from creeping in from below and ensures a smooth, friction-free movement when adjusting the blind.
• The honeycomb pleats trap air, creating an insulating layer that helps keep rooms cool in summer and warm in winter, reducing the need for extra heating or cooling.
• The cordless, push-pull operation offers a sleek and minimalist look while being completely child-safe, with no loose cords or chains to worry about.

Can Ultra Blackout blinds be fitted anywhere?

Ultra Blackout blinds are perfect for any room where total darkness is a must—bedrooms, nurseries, gaming rooms, and home cinemas. However, they do have some fitting requirements:

• They’re designed for inside recess fitting only - this means they must be installed within the window recess and cannot be mounted outside or as an exact fit like other blackout blinds.
• Your window recess should be ‘square’ - meaning the walls and sill need to be relatively straight. A small discrepancy (up to 15mm) is fine, but anything more could affect the fit and the overall blackout effect. To check the squareness of your recess, measure diagonally from the top left to the bottom right and compare it with the opposite diagonal measurement. If the difference exceeds 15mm, get in touch with us before ordering, and we’ll help you find the best blackout solution for your space.
• The effectiveness of our Ultra Blackout blinds relies on the frame and foam strips sitting flush against the walls of your recess, therefore they aren’t suitable for recesses with angled walls.

The best rooms for Ultra Blackout blinds

Ultra Blackout blinds are ideal for any space where controlling light is a priority.

A pitch-black room = better sleep. Light disrupts our circadian rhythms, making it harder to fall (and stay) asleep. Ultra Blackout blinds block out morning sunlight, streetlights, and even those pesky car headlights, so you won’t be waking up before your alarm. Plus, the thermal fabric helps regulate bedroom temperature, keeping it cool in summer and cosy in winter—so you can sleep comfortably all year round.

For that true cinema experience, you need complete darkness. Ultra Blackout blinds eliminate glare on your screen, so you can enjoy movies, gaming, or binge-watching without distraction. The honeycomb fabric also helps dampen outside noise, giving you that immersive, theatre-like experience at home. 

Babies and toddlers need their sleep (and let’s be honest, so do parents!). Ultra Blackout blinds keep nurseries dark for light-free daytime naps and consistent bedtime routines, no matter the season. Plus, their cordless design makes them a safe choice for little ones.

The benefits of Ultra Blackout blinds

• Total light control - Minimal gaps and optimal light blocking.
• Improved sleep quality - Essential for shift-workers, kids, and light sleepers.
• Energy-efficiency - The honeycomb pleats trap air, helping to regulate room temperature.
• Noise reduction- Blocks some outside noise for a quieter, more peaceful sleep. 
• Privacy - No chance of anyone seeing in from outside.
• Safe & stylish - Cordless design for child safety with a sleek, modern look and effortless operation.

Ultra Blackout blinds: measuring and fitting

Getting the perfect fit for your Ultra Blackout blinds is key to achieving total darkness. Measuring accurately ensures a snug fit within your window recess, while proper installation guarantees maximum light blocking and insulation.

• Measure the width and drop inside the recess at three points (top/middle/bottom for width, left/centre/right for drop). 
• Measure to the nearest millimetre and use the smallest width and drop measurement to place your order - we'll make a slight deduction to the measurements you provide to ensure a snug fit in your recess. 
• Check the squareness of your recess by measuring diagonally from corner to corner. If the difference is over 15mm, get in touch before ordering! 

Checkout our Ultra Blackout Blinds Measuring Guide for in-depth, step-by-step instructions! 

• Assemble the frame and place it in the recess, at least 50mm from the window to reduce thermal build-up.
• Use a spirit level to check it's straight, then mark the drill holes. 
• Remove the frame, drill the holes, insert rawl plugs, then screw the frame into place. 
• If needed, apply the foam strips behind the frame to block any tiny gaps for a perfect blackout effect. 

For the best, light-blocking fit, use our step-by-step Ultra Blackout Blinds Fitting Guide. 

When it comes to maximum darkness, insulation, and style, Ultra Blackout blinds are the ultimate solution. With made-to-measure precision, affordable pricing, and thousands of happy customers, we make blackout blinds better.

Ready to upgrade your space? Shop Ultra Blackout Blinds today.