Soundproofing - Window Curtain | ✅ Lab Certified | Reduces Outside Noise | Thermal | FR.
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Per Linea Metre - This is the width of the fabric and the quantity is the number of metres rolled off the roll
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Currently 3-4 Weeks
UK Mainland Over £250
FREELaboratory Proven Sound Reducing Curtain - With Double Glazed Window
Main Features Our Customers Love
Positive Outcome | Review Excerpts |
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Effective Noise Reduction | “Happy to say that this made all the difference and the road noise is now dramatically less and I can sleep well! Totally recommend.” |
Improved Sleep Quality | “They look lovely and make the room very dark, and she had not slept so well in weeks.” |
Effective Sound Dampening | “They look fabulous and are very effective, dampening the sound coming through the stud wall as I hoped they would.” |
Excellent Customer Service | “Very helpful staff. Respond very quickly to emails.” “Got these and was really disappointed so contacted the team. They called back and couldn’t be more helpful.” |
Quality and Fast Delivery | “The curtain was ready quicker than the estimated and arrived carefully packaged.” “Fast delivery and good online service.” |
Useful Installation Guidance | “The video links sent on how to get the best from your curtains were incredibly useful.” |
Aesthetic and Functional | “I was very glad to have a nice range of colours to choose from, so that the curtains could be a decorative feature too.” |
Satisfied with Purchase and Recommendations | “We have used these many times now, and they are fantastic. Great communication, great products—would recommend them 100%.” “Totally recommend.” |
About our Soundproof Curtain
**** If colours are not able to be selected it means they are not in stock. Stock will be on order and we can custom quote for you with advice about Leadtime. Please get in contact with the sales team - Sales@direct-fabrics.co.uk ****
The Herringbone face fabric is 360gsm
Our curtain as far as we can see against our competitor's (February 2020-May 2024) product is the only product actually tested with a double glazed window. Our testing has been performed in February 2020 and was with a real-world set up and performed in a laboratory to record the results. The results show that the curtain reduces sound entering a space by 4 Decibels when combined with a brand new standard double glazed window.
When tested without the window in an open space it tested to 11 decibels. Obviously, when working with a window, the window is doing the majority of the acoustic reduction.
Testimonials / Case Studies Soundproof Window Curtain
Testing our product in a Laboratory with a double glazed window.
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Quite simply our product is laboratory proven and has the following features;
- Proven to reduce sound passing between 2 spaces. It is certified depending on the number of layers up to 4db with a double glazzed window and 12db as a room divider for ENISO 1040-1
- A decorative product, as well as a sound blocking product.
- Hangs beautifully and works with standard curtain tracks and poles.
- Room Divider means no other obstruction stopping sound passing between a space
- If there is a door it will not work as well or a wall as the object is doing the work already
Curtain installed on a curtain track. 20cm Above the window and curtains to the floor, 30cm Passed each side and a window in a gap in a breeze block wall and mounted our curtain in front of it.
The window tested had a result fo 29db and combining the window with our 2 layer curtain gave a result of 33db reduction.
About the Face Fabric
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The herringbone range of curtain fabrics are an acoustic range of curtains, this means that they are ideally suited to reduce the amount of echo and reverberation of sound around a space.
Using Different linings can give you some great sound blocking over 11db to 12db when used as a room divider.
- The face fabric is certified to BS5867 Part2C. Lining is BS5867 Part 2B -
- The fabric is ideal for flame retardant curtains and accessories. Our best selling flame retardant curtain fabric
- Acoustic Rating of Face Fabric - has been tested to EN ISO 354 --- GRADE A 0.95 reduction in the acoustic lab.
- 100% Blackout When Lined.
- EN ISO 717-1 for acoustic insulation to 5db and 11db when lined.
10 Decibels is half of the audible sound.
The herringbone range has passed a certified acoustic report. This means it is ideally suited for sound absorption as it is graded A for EN ISO 354:2003. It has passed the classification A standard so it will absorb sound at a variety of frequencies. A sound absorbtion of 0.95aw
Our acoustic curtain lining when combined with our face fabric has been certifed for acoustic insulation of 4db when used with a window
We have an amazing article that tells you a lot about acoustics and soundproofing curtains and sound acoustic curtains. READ HERE
Frequently Asked Question About Sound Proof Curtains
- This all depends on how your room is constructed and most importantly the windows that are in your room. If you have a draughty window made out of single glazing then our curtains will work well to reduce the sound entering and passing around the room. The curtains have been tested for sound insulation effectively sound blocking. The tests performed in the laboratory have shown the insulation 4db of insulation with a double glazed window. However, the sound blocking is totally dependent on the structure of the room and windows. We have picked a standard test of double glazing in a block structure room and we got the 4db result.
Customer Review - Triple Glazed windows in a modern London apartment. Our customer has said there was a 50% reduction in the sound.
Road Noise is generally low tones when on the roadside, so if on a ground floor level the sound is probably entering through the fabric of the building. This means your adjustments will need to be more structural. For higher frequencies, these curtains will work well to dull the sound.
Similar to road noise it depends on the construction of your room
We have had customers note - they have seen upto a 50% improvement when using double glazing and our curtains. They can now sleep through the the early morning flights. Modern buildings with quality double glazing units will only see a marginal impact from the sound entering the room. Where you will notice the improvement is the sound already bounces around the space. As you are adding an acoustic absorber being the face fabric to the space, it will reduce the reverberation of the sound passing around the space.
Read this carefully. There is no difference between the 2. We just like to explain the product for one use and another for a different use. The room divider curtain has been tested as a room divider so has a sound insulation of 11db varying on lining and the window curtain has been tested infront of a double glazed window so has a 4 db uplift above the double glazed window.
When working with loud echoes in spaces it can be incredibly frustrating to stop sound reverberating around the room. This is where an acoustic curtain come in. Depending on the fabric it will have a varying effect on the amount of absorption that It takes and effects the sound passing back around the room.
To see how good a fabric or product is at absorbing sound in a room then you need to complete the Sound absorption test EN ISO 354. This grades a product between A – E based on how absorbent a material is. When sound is projected into a room it will hit the surfaces and then it will either be transmitted through things like ceilings and walls or it will be reflected back into the room. So in a basic form, the test is how much sound is sent out will return.
Example Imagine. 100 units of sound are sent into a room, 95 units are transmitted out of the room and then 5 are recorded back into the space.
Thus the sound absorption coefficient is 0,95Sound insulation is the measurement of sound passing between 2 spaces when comparing its performance in an aperature that is open and then sealed with the test product. This is tested with ENISO 717 for acousitc insulation. This is measured in decibells and is measured to show the reduction of sound.
Changes in STC Rating | Changes in Apparent Loudness |
+/- 1db | Almost imperceptible |
+/- 3db | Just perceptible |
+/- 5db | Clearly noticeable |
+/- 10db | Twice (or half) as loud |
Sound Level DB | Source | Sensation |
130 | Jet Aircraft at 100ft | Physical Pain |
110 | Thunder / Artillery / Disco | Deafening |
90 | Loud Street / Loud Factory | Very Loud |
70 | Cocktail Party, Noisy Office, Average Street Noise | Loud |
50 | General Office, Noisy Home | Moderate |
30 | Private Office, Quiet Home, Empty Gym, | Faint |
10 | Russle Of Leaves, Whisper | Very Faint |
0 | Threshold of Audibility | Nil |
YES - This is an excellent use of our acoustic curtains. standard acoustic herringbone fabric with duo lining is well suited to reduce sound passing from space to space at about 11db - 13db in a laboratory environment, combine this with our vinyl will get you approximately 10db in real-world testing. Laboratory.
Choosing the best lining – absorption & sound blocking
1. Unlined - Ideal for echo reduction and as a decorative curtains
The curtain is certified to the ENISO 354 test as a sound absorber and has a “A” Rating.
The Herringbone face fabric has been tested to ENISO 10140-1 / EN ISO 717-1 for acoustic insulation to 5db.
2. Fleece Blackout Interlined Lining 400gms - Sound Absorption Lining with Insulation 11 Decibels
The acoustic fleece blackout has been tested as a curtain with the herringbone fabric to ENISO 10140-1 / EN ISO 717-1 for acoustic insulation to 11db.
3. Fleece Lining 2 Layers or Face, Lining, Face
12-decibel reduction in a lab environment when used as 3 layers
10 Decibels is half of the audible sound.
A Curtain That is Certified and Backed by Laboratory Testing
10 Decibells is half as loud
Compared to the laboratory test there may be a slight difference, but when setting up the test we mounted a curtain track across the wall above the window by 15cm and to each side by 15cm. The reason for this was to show the improvement
Sound Absorbing Result - Face Fabric ONLY
Sound Reduction Index in Decibells 2 Layers - Face Fabric with 1 Layer Acoustic Lining
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Sound Reduction Index in Decibells 3 Layers. Face Fabric with 2 x Lining
Test Results for Products
A Curtain That is Certified and Backed by Laboratory Testing
Sound Absorbing Result - Face Fabric
Double Glazed Window Sound Proofed
Double Glazed Window with Curtains - Sound Proofing Uplift 4db
Showcase Pictures of Acoustic Curtains
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Washing / Cleaning Information Face Fabric | 30 Degrees (When Blackout Lined) |
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Flame Retardant Certified Rating | BS5867 Part 2B |
Delivery | Currently 3-4 Weeks |
Flame Retardant | Yes |
Fabric Style | Plains |
Fabric Width (cm) | 150 |
Pattern Repeat Vertical (cm) | 1 |
Composition | 100% Polyester |
Features | Flame Retardant |
What are the different curtain heading options?
What is Acoustic Absorbtion
Will my curtains stop sound as a Room partition / Room Divider?
They were able to get a previous order up, which saved me a lot of time. Very helpful on the phone and quick to reply
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How to Measure For Curtains, Blinds and Tracks.
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
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- 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
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- 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
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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
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SAVE TIME - Send your project requirements, large or small. Sample Lists etc