Soundproof - Window Curtain | ✅ Lab Certified | Reduces Outside Noise | Thermal | FR.
Flame Retardant
Blackout
Made To Measure
British Made
Acoustic
5 Year Guarantee
Thermal
Soundproof - Window Curtain | ✅ Lab Certified | Reduces Outside Noise | Thermal | FR.
Flame Retardant
Blackout
Made To Measure
British Made
Acoustic
5 Year Guarantee
Thermal
Currently 3-4 Weeks - UK Manufactured
UK Mainland Over £250
FREE
Sound Reducing Curtains for Windows
Designed to reduce external noise through the window and calm the room by reducing echo. Lab tested, British made, fire retardant as standard.
Voice frequencies
Up to +12 dB
where you hear noise most
Curtain SRI
11 dB
room divider test
Absorption
Grade A
EN ISO 354
Thermal
30%
heat loss reduction
Will it work for my situation?
Pick the closest match. This keeps expectations realistic.
Traffic noise, voices, general outside noise
Good results when the curtain overlaps the window and you reduce drafts.
Bedroom sleep upgrade
Strong choice — noise reduction plus blackout plus thermal benefit in one curtain.
Aircraft noise
Often helpful, but results depend heavily on window quality and sealing.
Very low frequency bass or vibration
Curtains help, but building structure matters. Consider sealing upgrades alongside.
Straight talk: your window is the main barrier. The curtain is a proven upgrade, not a replacement for poor glazing.
What you get
Sound reduction
+4 dB over double glazing. 11 dB SRI as room divider.
True blackout
3-pass coated lining blocks light in and out.
Thermally certified
Reduces heat loss by 30% over double glazing.
Premium construction
360 gsm face + 370 gsm lining. Over 1 kg per m².
Fire retardant
BS5867 Part 2C face fabric. Part 2B lining.
Colour availability
If a colour cannot be selected it is out of stock. Contact the team for lead time.
Fitting makes the difference
These 3 rules are where most performance is won or lost.
Aim: higher + wider + floor length
1) Fit higher
Mount 15 to 20 cm above the window, or ceiling fit where possible.
2) Go wider
Overlap the window edges by 20 to 30 cm each side.
3) Seal drafts first
Air gaps are sound gaps. Improving seals delivers better results.
Our own test result
Fitting the curtain 30 cm wider than the window and making it floor length produced the +4 dB improvement shown in our certificates. Fitting tight to the frame produces a lower result.
About "up to 21 dB" claims
Some suppliers quote peak figures at very high frequencies (4,000+ Hz) where any dense fabric performs well. Our published results focus on realistic performance across the full frequency range.
You will also need a suitable track
Acoustic curtains are heavy — over 1 kg per m². Standard plastic tracks and lightweight poles are not suitable.
Contract Heavy Duty Curtain Track
Metal heavy-duty track rated to 60 kg. Black or white. Wave compatible. The recommended track for our full acoustic range.
- ✓ Rated to 60 kg load
- ✓ Wave, eyelet and pencil pleat compatible
- ✓ Black or white finish
- ✓ Made to measure
Proof and testing
We publish our certificates. Most competitors do not test at all.
Window test: 29 dB baseline → 33 dB with curtain (+4 dB)
What the window test means
- Double glazing alone measures 29 dB
- Our curtain takes it to 33 dB (+4 dB improvement)
- Room divider SRI is 11 dB — curtain tested in isolation with no window
- Fitting height and overlap affect real-world results
Absorption result (face fabric)
Insulation result (2 layers)
Insulation result (3 layers)
Window only (29 dB baseline)
Window + curtain 2 layers (33 dB, +4 dB)
How we tested — and what it means at the frequencies that matter
Real-world mounting. Published certificates. Honest frequency breakdown.
How this test was conducted
Most acoustic lab tests mount material in a rigid sealed frame. Our curtains were tested mounted on a standard curtain rail in a normal domestic setup — the same way you would fit them at home. The test accounts for real edge gaps, real drape behaviour and a real installation method.
Getting +4 dB in a realistic mounted test is a more meaningful result than a higher figure from a sealed frame that no real installation would replicate.
Why the weighted average undersells performance
The Rw weighted figure of +4 dB is an average across all frequencies including the low bass range (below 200 Hz) where curtains — like all soft furnishings — have limited effect. At the frequencies human hearing is most sensitive to, the improvement is substantially higher.
Across the 630 Hz to 2,000 Hz range — where voices, traffic and most everyday noise sits — our curtain adds an average of 8 dB over the window alone.
Frequency by frequency — window baseline vs window with curtain
Tested on standard curtain rail. Published certificate. Direct Fabrics lab test.
+4 dB
Weighted average (Rw)
across all frequencies
+8 dB
Average improvement at
630 Hz to 2,000 Hz
Where human hearing is most sensitive
+12 dB
Peak improvement at
1,250 Hz
The frequency range of speech and voices
Why does the weighted Rw show only +4 dB? The weighted figure follows a standardised calculation that includes low bass frequencies (below 200 Hz) where the window itself already provides good isolation and curtains add little. This pulls the average down significantly. The frequencies where the curtain makes the most difference — the mid-range where you actually hear noise — are not fully reflected in a single weighted number.
Watch before you buy
Real demonstrations and lab test explanations.
Acoustic Curtain Demonstration — Performance and Installation
Sound Absorption vs Insulation Explained
Lab Test Results — What the Numbers Mean
The face fabric
Herringbone acoustic fabric, 360 gsm. Designed to perform acoustically while looking like a premium curtain. Available in multiple colours and finishes.
Fire retardant
Face fabric: BS5867 Part 2C. Lining: BS5867 Part 2B.
Absorption
EN ISO 354: Grade A, 0.95 aw — excellent echo reduction.
Wash care
30 degrees when blackout lined. Dry clean recommended for best results.
Want the full explainer?
Absorption vs insulation explained: read here.
Quick reference: a 10 dB change is commonly described as sounding roughly half as loud. Your result depends on the room, the window and how the curtain is fitted.
What customers say
Verified Trustpilot reviews with genuine install photos.
"They deaden or muffle noise from the street outside very well - cars, people. If there is very loud music the bass still comes through but it is muffled. They make the room much more cosy and combined with the blackout they are excellent."
T. Thorpe
✓ Verified Trustpilot Review
4 photos submitted
"The rest of the house is now bearable when the drum kit is being played. I can have a conversation which I could not before, and it is not impacting our neighbours any more."
Sarah G.
✓ Verified
"We love them! We were so pleased we ordered the exact same thing for our guest bedroom. Hoping to do a third order for our lounge!"
Adriane C.
✓ Verified
"They are great quality curtains. They do reduce the noise. They keep the room warm which is great in colder months!"
A. Kaur
✓ Verified
Real installs
Bedrooms, patio doors, lounges, studios and commercial spaces.
Looking for a different acoustic solution?
This curtain is optimised for windows. We also offer room dividers, echo reduction and specialist stage curtains.
Frequently asked questions
Will this stop road noise? ⌄
Will it help with aircraft noise? ⌄
Which track should I use? ⌄
Room divider vs window curtain — what is the difference? ⌄
Will it be fully soundproof? ⌄
Can I return made-to-measure curtains? ⌄
| Washing / Cleaning Information Face Fabric | 30 Degrees (When Blackout Lined) |
|---|---|
| Flame Retardant Certified Rating | BS5867 Part 2B |
| Delivery | Currently 3-4 Weeks - UK Manufactured |
| Flame Retardant | Yes |
| Fabric Style | Plains |
| Fabric Width (cm) | 150 |
| Pattern Repeat Vertical (cm) | 1 |
| Composition | 100% Polyester |
| Features | Flame Retardant, Blackout, Soundproof |
What are my Curtain Lining Options?
What are the different curtain heading options?
What is Acoustic Absorbtion
Will my room be totally blackout with a blackout fabric?
Which Size Curtain Eyelet do i need for my poles?
How much space will my curtains take up when stacking back
Can I return made-to-measure curtains?
What is the difference between blackout and dimout fabric?
What are thermal curtains and how do they work?
How to Measure for a Recess Fitted Blind
Will my curtains stop sound as a Room partition / Room Divider?
What is Curtain Fullness & What Fullness will my Curtains be?
Customer Product Reviews
Top customer reviews
Reviews with images
Images in this review
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100% satisfied100% satisfied, the quality of material for these Curtains from Direct Fabrics are lovely and made beautifully.. outstanding service and made within a few weeks *****0 people found this helpful
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I was quoted a delivery time of 3-4…I was quoted a delivery time of 3-4 weeks but the order was delivered within 10 days. The colour is great and the curtains were easily hung by 1 person. The curtains shut out much of the light and some of the sound which helps with a good sleep. The only negative was the box the curtains were packed in was quite battered by the time it arrived and had been repaired by DPD but the curtains were undamaged.0 people found this helpful
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Wow!Wow! I'm very impressed with the door curtain I ordered and hung it up straightaway. The curtain is beautifully made and the header tape was adjusted to fit the pole exact. The metal hooks were already inserted and there are weights stitched into the hem to help it hang perfectly. The fabric and lining are lovely and the curtain has noticeably reduced the echo and noise from the main road. A great purchase. Thank you!0 people found this helpful
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Unbelievable service and great curtainUnbelievable service and great curtain, we used it for our conservatory to living room partition it creates great thermal insulation and keeps the cold out. It also looks great0 people found this helpful
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Great customer service and bespoke…Great customer service and bespoke curtains.2 people found this helpful
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Great product excellent qualityGreat product excellent quality0 people found this helpful
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Room Divider Double Sided CurtainVery Happy with our room divider curtain, lovely quality and dress the divide very nicely.
0 people found this helpful -
Good experienceGood experience, fast to reply and to adapt the product to my needs.0 people found this helpful
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I recently purchased some beautiful…I recently purchased some beautiful curtains from Direct Fabrics. All staff have been extremely friendly and helpful with advice and support when required. I wholeheartedly recommend this wonderful family run company to one and all : )0 people found this helpful
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They deaden or muffle noise from the street outside very well eg cars, people.They deaden or muffle noise from the street outside very well eg cars, people. If there’s very loud music then the bass still comes through but again it’s muffled. They make the room much more cosy and combined with the blackout.
1 people found this helpful
How to Measure For Curtains, Blinds and Tracks.
Pen and Paper
For recording your
measurements.
Helper
Someone to assist if your
windows are large .
Metal Tape Measure
As this will allow you to get a
rigid full length measurement.
Make sure your curtain tracks and poles are fitted in the position you want.
Choose the type of curtains that you would like and how you want to hang your curtains. See our heading styles guide
We recommend fitting your hardware first before measuring, this avoids any issues with not getting the perfect fit.
Measure your window using our main guide. Quick summary below. Remember wave, pinch, and designer headings require slightly different measurement
Measure in 3 places and take the shortest drop – Floors and ceilings can run out.
Double / Triple check your measurements
Choosing your Curtain Track Width
The width of the curtain track should extend past your window this allows for the curtains to stack back away from your window and allow light in.
Measure your recess and then add on 15cm on either side. For acoustics , we recommend further to fully cover the window and the surrounding area. In our test we added an additional 30cm to the width and also made the curtain floor length.
Wave curtains, for every 100cm of track the curtains will stack circa *18cm
Eyelet curtains, they will stack back circa 10cm per *70cm of track width
Pencil Pleat will stack approx 25% of the track width. eg. 210cm track will stack 52.5%
* all dependent on thickness of fabric
Selecting your Curtain Drop
Where to Measure From for Different Type of Curtains
|
Type of Curtains |
Fitted On |
Where to Measure from - to desired length |
|
Pencil Pleat Curtains |
Curtain Track |
Top of the Track - If using a extra wide track or designer track like silent gliss metropole, then measure from the underside of the track. |
|
Pencil Pleat Curtains |
Curtain Pole |
Measure from small ring at the bottom of eye under the ring, this is where your curtain clips into. |
|
Eyelet Curtains |
Curtain Pole – Only |
Top of the pole *we add on the upstand to our curtains, |
|
Pinch Pleat Curtains |
Curtain Track |
The underside of the track |
|
Wave Curtains |
Curtain Track Designer Pole |
The glider underneath the track. The curtain will sit under the track. |
|
Acoustic Curtains |
See Heading Style of Choice above |
Same but make sure wider than normal ideally 30cm past either side and 30 above. Also to the floor. |
How to Measure for Blinds going Inside the Recess
- Measure the exact width of the recess in three places; at the top of the recess, in the centre of the recess and near the bottom - then take the smallest size.
- Measure the exact drop of the recess in three places on the left hand side of the recess, in the centre of the recess and on the right hand side of the recess - then take the smallest size.
- We will take one cm off the finished width size you have given us, to allow for the blind to pull up and down easily.
- Double check your measurements
- Cord Safety - Mounting Height - We ask for the mounting height of your blinds to allow for the cord to be 150cm off the ground. If mounting at 210cm This is what you enter in the Fitting height box. We make a deduction to ensure the cord is 150cm from the floor. Thus the cord loop will be 60cm
How to Measure Outside of the Recess
- Measure the recess in 3 places on the width and also 3 places on the drop. Take the widest measurement.
- Measure the width of the actual recess plus an additional amount – Usually from 7cm-15cm whatever you think looks appropriate. This is for overlap.
- Measure the exact drop of the recess. The blind would be fitted above the recess, so check the space above and add an amount on to the drop – usually from 7-15cm
- These sizes you have taken will be the size of the finished blind.
- Double check your measurements
- Cord Safety - Mounting Height - We ask for the mounting height of your blinds to allow for the cord to be 150cm off the ground. If mounting at 210cm This is what you enter in the fitting height box. We make a deduction to ensure the cord is 150cm from the floor. Thus the cord loop will be 60cm
Cubicle Tracks you have to measure with right angles from wall to wall where you want the track to go
Draw your room on a piece of paper with a sky view
Now measure from the wall to wall for straight tracks,
L Shape Tracks Measure to a point on the floor and mark with a piece of tape. Then for the other sides measure from the other wall to that point.
Always check for obstructions and fitting issues you may need to work around
SAVE TIME - Send your project requirements, large or small. Sample Lists etc