A thermal curtain is a technical curtain designed to limit heat transfer at windows. It helps to retain warmth in winter and keep your home cool in summer, improving your comfort and reducing your heating and air conditioning needs. At Moondream, our thermal curtains feature THERMACTIV®, a patented technology with a micro-metallised layer that reflects thermal radiation.
Our thermal linings and thermal curtains feature THERMACTIV®, a patented technology designed to limit heat transfer at windows, in both winter and summer.
Inspired by the principle of an emergency blanket, this technology relies on a highly reflective micro-metallised layer. Its effectiveness depends not on the thickness of the fabric, but on its ability to reflect thermal radiation:
- In winter, it reflects heat back into the room, limiting heat loss.
- In summer, it reflects thermal radiation coming from outside, helping to limit the rise in indoor temperature.
The thermal performance stated on each product page has been measured and validated by independent laboratories with the product used in this configuration.
Available as a lining to add to your curtains or already integrated into our thermal curtains, THERMACTIV® improves your comfort all year round, without building work or compromising your décor.
Yes. To adjust the length of your curtain, we recommend our height alteration service. This service ensures a neat finish while preserving the curtain's technical construction.
If you need specific dimensions, you can also order a made to measure curtain.
If you prefer to make this alteration yourself, first hang your curtain and pin the hem at the desired height.
The lining is deliberately a few centimetres shorter than the face fabric. Iron-on hemming tape must be applied only to the face fabric, never to the lining.
If you need to shorten the curtain by more than this difference, there are two options:
- Make the hem using iron-on hemming tape: trim the lining so that it remains slightly shorter than the face fabric, then hem only the face fabric, following the video tutorial on our YouTube page.
- Have a sewn hem made: have each layer shortened and hemmed separately, keeping the bottom of the curtain open. The different layers must not be sewn together. We recommend having this work carried out by a professional.
To maintain heating efficiency, position your curtain so that heat can circulate freely around the room. A thermal curtain placed in front of a radiator may trap heat between the fabric and the wall.
Avoid any direct contact between the curtain and the radiator, and observe the safety distances specified by the manufacturer of your appliance.
No. Install your curtain or thermal sheer just as you receive it: there is no need to adjust the lining between winter and summer.
The thermal performance stated on each product page has been measured and validated by independent laboratories with the product used in this configuration.
Our thermal linings attach to the back of your existing curtains to give them the performance of patented THERMACTIV® technology. This improves your thermal comfort without changing your curtains or your décor.
Our thermal curtains are designed for indoor use. Their fabrics and linings are not suitable for exposure to the elements, and their performance has been measured under indoor conditions.
For your balcony or terrace, we recommend our outdoor curtain range, specially designed for this use.
Yes, a thermal curtain can also be installed in front of a door: a front door or a door leading to a cellar or garage. It helps limit heat transfer to the outside or to an unheated area.
To separate two spaces, for example in a hallway or by a staircase, choose a room divider curtain. It helps retain heat in the heated area and has two identical sides, suitable for an installation visible from both sides.
Moondream offers three thermal solutions, depending on the performance you need and how much light you want to retain:
- Refresh thermal lining: up to 4.7°C cooler. It has the highest measured temperature reduction of the three solutions. Light-filtering, it attaches to the back of an existing curtain or sheer curtain.
- Thermal curtain: up to 4.3°C cooler. Already fitted with its Eco lining, it offers different levels of blackout depending on the model.
- Thermal sheer curtain: up to 3.7°C cooler. Already fitted with its BiCool lining, it lets daylight through to keep your room bright.
These performance levels are measured by an independent laboratory.
They differ in how they manage light and in their thermal lining:
- A thermal curtain, fitted with an Éco lining, dims the light or blocks it completely depending on the model: dim-out or 100% blackout.
- A thermal sheer curtain, fitted with a BiCool lining, lets daylight through to keep your room bright.
The thermal performance of each model is detailed on its product page.
For a small localised stain, gently dab the area with a slightly damp sponge.
For a full clean, care requirements depend on the product:
- Thermal curtains must be dry-cleaned only.
- Sheer curtains and some thermal linings can be machine-washed at 30°C, according to the model's specific instructions.
Thermal curtains can be ironed at a low temperature, on the front fabric only, never on the lining. Ideally, place a slightly damp cloth between the iron and the fabric.
Always follow the care instructions on the product page and the label sewn into your item.
In a bedroom, choose a 100% blackout thermal curtain to improve thermal comfort and block light, even without shutters. It is particularly suitable for children's daytime naps. Make sure you fully cover the window and its frame to limit light entering around the curtain.
In a living room, dining room or office, choose a thermal sheer curtain to retain natural light, or a dim-out thermal curtain if you want to reduce brightness further.
The right choice combines thermal comfort and light control, according to how you use each room.