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The 3 performance benefits explained.
100% blackout*:
The fabric lets in no light, in real-world conditions. Zero halo at the edges thanks to the made-to-measure fit; the 100% works across the entire installed surface, not just at the center of the curtain.
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Thermal insulation up to 7°C of gain*.
The fabric creates a barrier between the cold outside air and the warm inside air in winter, and blocks solar radiation in summer. A measured gain of 7°C*, with a floor-to-ceiling drop and an optimal side overlap.
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Soundproofing with 22 dB of attenuation*.
The fabric's high surface mass absorbs sound waves before they pass through the window. 22 dB of attenuation means more than halving the perceived sound volume*. You will notice the street noise far less.
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*Under optimal installation and test conditions.
Performance by fabric density: the complete comparison
| Category | Density | Blackout | Thermal gain | Sound attenuation |
|---|---|---|---|---|
| Standard thick curtain | 150 to 300 g/m² | 40 to 70% | 1 to 2°C | 5 to 7 dB |
| Mid-range | 300 to 500 g/m² | 70 to 90% | 2 to 4°C | 12 to 18 dB |
| High performance | 500+ g/m² | 95 to 100% | 5 to 7°C | 18 to 25 dB |
| Kurtens | 620 g/m² | 100 %* | Up to 7°C* | 22 dB* |
*Data from tests carried out under optimal conditions.
Why combine blackout, thermal and soundproof performance in a single curtain.
Buying a blackout curtain, a thermal curtain and a soundproof curtain separately creates three problems: clutter on the rod, the added-up cost and the loss of efficiency from layering. A Kurtens curtain at 620 g/m² delivers all three performance benefits in a single multilayer fabric panel, with no compromise on any of the three.
According to the World Health Organization (WHO), nighttime exposure to noise above 40 dB degrades sleep quality and increases cardiovascular risk. A curtain that combines 22 dB of sound attenuation* and 100% blackout creates the optimal conditions recommended by the WHO for restorative sleep: total darkness and a significant reduction in noise.
For which rooms and which situations
The Kurtens blackout, thermal and soundproof curtain is especially suited to bedrooms facing the street (noise + light), rooms exposed to cold (single-glazed windows, north-facing orientations), children's and babies' rooms (darkness + quiet), home cinemas (total darkness + acoustic insulation) and home-office spaces (focus + thermal comfort). For large openings and patio doors, explore our made-to-measure wide-width collection and our made-to-measure patio door curtain collection.
If you only need one performance benefit.
The Kurtens curtain combines all three performance benefits. If your main need is a single function, browse our specialized collections: made-to-measure soundproof curtain (soundproofing first), made-to-measure blackout curtain (blackout first), made-to-measure thermal curtain (thermal insulation first). To understand the difference between a plain blackout curtain and a thermal blackout curtain, read our comparison thermal blackout curtain vs plain blackout curtain.
Choose your color from the 7 available (Grey, Off-white, Cream, Mint Green, Green, Lilac, Blue). Select a standard size or enter your exact dimensions in the configurator. The curtain is made to your measurements and delivered in 2 to 3 weeks, with free delivery in mainland France, Belgium, Switzerland and Luxembourg.
Need help measuring? See our size guide. To choose your fixing, see our fixings guide. To choose your color, see our color guide.
*Data from tests carried out under optimal conditions.
The synergy of the 3: why it beats 3 separate curtains
Installing three separate curtains to handle three different problems is not a realistic option. A single rail, a single installation, a single investment; the Kurtens 3-in-1 curtain solves all three at once with no extra clutter. The synergy goes beyond practicality. The three performance benefits reinforce one another: Total blackout improves thermal efficiency: a curtain closed during the day blocks solar radiation before it heats the room. Thermal insulation improves acoustic comfort: a room at a stable temperature is perceived as quieter. Soundproofing improves sleep quality: combined with total darkness, it creates the optimal conditions for deep rest.
When to choose the 3-in-1 curtain rather than a specialized curtain?
The blackout thermal soundproof curtain is the obvious choice if you tick at least two of the following three situations: You are bothered by noise from the street, neighbours or traffic; your room is cold in winter or too hot in summer; you need total darkness to sleep, for a baby or for a home cinema space.
Made-to-measure: the only way to optimise all 3 performances at once
Each of the three performances loses efficiency as soon as a gap appears between the curtain and the wall. A standard curtain lets light through at the edges, cold air through the bottom and sound through the sides, all three problems at once. At Kurtens, every curtain is made to the exact dimensions of your opening with: a side overlap of 15 to 20 cm on each side that eliminates acoustic, thermal and light bridges at the same time A floor drop of 2 to 3 cm that closes the bottom join for all three performances A height configured floor-to-ceiling or window-to-ceiling depending on your installation The result: all three performances are achieved across the entire surface, not just at the centre of the curtain.
Ready to discover the Kurtens difference?
Frequently asked questions.
Can a single curtain really combine 100% blackout, 7°C of thermal gain and 22 dB of sound reduction?
Yes, provided the fabric was specifically designed to combine all three properties and each performance is measured independently. At Kurtens, the three figures are tested separately, not estimated by inferring from a single fabric characteristic.
*Results are obtained under optimal installation and test conditions.
Do the three performances degrade each other within a single fabric?
No, they reinforce each other. Total blackout amplifies thermal efficiency by blocking solar radiation. The fabric density required for thermal insulation contributes to sound reduction. All three properties share the same basic mechanism: a fabric with high surface mass.
Does the 3-in-1 curtain work as well as a curtain specialised in each single performance?
On blackout and thermal, the performances match our specialised collections. On soundproofing, the 22 dB are identical to our made-to-measure soundproof curtain collection. There is no compromise between the three, that is the advantage of a fabric designed from the start to combine them.
Does this curtain need to be cared for differently from a standard curtain?
No, you can view the care instructions directly from the product page.
Is the 3-in-1 curtain available for non-standard formats such as patio doors or wide-width openings?
Yes, as it is made to measure, it adapts to any dimensions including wide-width openings, patio doors and non-standard formats. Enter your exact dimensions when ordering.
Check our guides for a perfect finish.
