Soundproofing -22 dB
Thermal insulation +/- 7°C
100% blackout - Total darkness
How to choose your size?
How to choose your size?
Example: 120 cm opening → 180 to 240 cm wide curtain.
Recommended minimum: 1.5× for performance. Ideal: 2× for perfect drape + maximum insulation.
For maximum blackout: extend to the floor; every centimeter of gap lets in light and drafts.
Why 1.5× to 2× the width?
Summary diagram
One curtain or two panels?
Two panels if your opening exceeds 250 cm or if you prefer to open from both sides.
Why do waves improve performance?
Folds create trapped air pockets that form an additional barrier against noise and cold. It's the same principle as double glazing; still air insulates.
How does the 3-in-1 work?
How does the 3-in-1 work?
A single curtain, three technical layers sewn together. Each has a measured role.
- The decorative face. A plain technical linen, with the drape of a heavy curtain. It dresses the window. The technology stays invisible.
- The blackout membrane. It blocks 100% of light and UV rays. You sleep in broad daylight, and your furniture no longer fades in the sun.
- The high-density technical backing. It insulates by up to 7°C: heat stays out in summer, in during winter, and your energy bill drops. It also attenuates outside noise by up to -22 dB: the street goes quiet.
Assembled, these three layers reach 620 g/m². It is this weight that gives the drape and carries all three functions.
Delivery and returns
Delivery and returns
Shipping across Europe.
Our curtains are dispatched within 5 to 7 working days, then delivered within 5 to 10 working days.
Returns: made-to-measure curtains are not eligible for return except in case of a manufacturing defect. Standard curtains can be returned within 30 days, in their original packaging, unused and uninstalled. Return shipping is at the customer's expense except in case of a defect.
Features and care
Features and care
Care instructions and properties
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Fabric properties: Treated and stabilized to maintain original dimensions (subject to compliance with care instructions).
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Washing: Machine wash at 30°C (delicate cycle).
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Spin speed: 400 revolutions per minute maximum.
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Drying: Air dry, hang damp. Do not tumble dry.
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Bleaching: Chlorine prohibited.
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Ironing: On the right side, with a low iron.
How to choose your colour?
How to choose your colour?
Off-white
Cream
Gray
Blue
Green
Mint Green
Lilac
The exact colour
Explore our colours and find the shade that suits your interior.
100% blackout
The central membrane blocks 100% of visible light and UV rays. No halo at the edges, no streak of daylight when you wake. You sleep until the hour you choose, even in high summer.
The street stays outside.
The high-density layer absorbs street frequencies: traffic, neighbours, building works. Up to -22 dB measured at the window. Try it: close the curtain and listen to the volume drop.
Up to 7°C difference
The three technical layers form an insulating barrier. Heat stays outside in summer, inside in winter: up to 7°C difference measured at the window. Your heating and air conditioning work less, your bill drops.
Dedicated support.
Mon-Fri 9:30am-7:30pm. Reply within 24h. Contact@Kurtens.com.
30-day returns.
Standard sizes, original packaging, not installed.
Secure payment.
Pay for your purchases with confidence thanks to our secure payment solutions.
Free delivery.
France, Belgium, Switzerland, Luxembourg. Tracked by email.
| Big-box store | Kurtens | |
|---|---|---|
| Blackout | 50-70% | 100% |
| Thermal | None | 7°C |
| Soundproof | None | -22 dB |
| Weight | 120-200 g/m² | 620 g/m² |
| Made-to-measure | Rarely | To the cm |
| Curtains needed | 2-3 | 1 |
Your questions.
Is it really effective against noise?
−22dB measured under optimal test conditions. You will notice far less noise from the street.
I'm worried about getting my measurements wrong.
Our 3-step measuring guide helps you choose the right standard size or enter your own dimensions. And the Kurtens Exact-Fit Guarantee (€29.90) covers free remaking if you opted for made-to-measure.
Is this curtain compatible with my rod?
4 heading types available: eyelets, pencil pleat, rod clips and rod pocket. Check our heading guide to identify your rod.
How long does delivery take?
From dispatch ( 5 to 7 business days ) delivery takes 5 to 10 business days. You will be kept informed at every step. Email tracking from dispatch.
How do I wash it?
Machine wash at 30°C, delicate cycle. No tumble dryer. Iron at low temperature (reverse side). Properties retained after washing.
Can I return it?
30-day returns. Returns accepted for manufacturing defects with free exchange. Made-to-measure cannot be returned for change of mind, which is why the Exact-Fit Guarantee matters.
Description
Petrol blue blends blue and green in a rich, contemporary shade. Intense without being dark, it warms a room while delivering blackout, thermal insulation and acoustic comfort.
Three functions combined in a single made-to-measure or standard-size curtain
The Petrol Blue Sérénité curtain combines three functions. Thanks to its three-layer structure of 620 g/m², it blocks 100% of light, insulates against cold and heat (up to 7°C gain) and reduces noise by 22 dB.
Petrol blue: for which rooms and which uses?
Petrol blue dresses a living room or bedroom with an elegant note. It suits rooms with character and pairs with cosy atmospheres.
A curtain made to your exact dimensions
The Petrol Blue curtain is ordered in standard sizes or made to measure, to the width and height of your window. It covers the whole opening, with no light leak at the sides. Four headings to choose from: eyelets, gathering tape, rod pocket, multipurpose tape.
Styling tips and pairings
Petrol blue matches terracotta, brass and dark wood. With warm materials such as velvet, it creates an enveloping interior.
