Custom Thermal Curtain | Cold and Heat Insulation

Does your home lose heat in winter and overheat in summer? The thermal curtain is the simplest and most cost-effective solution to correct the insulation weaknesses of your windows, without any work. A specific technical lining creates an air gap between the glazing and your interior, significantly reducing thermal exchange in both directions.

Available in a wide range of colors and textures, our custom-made thermal curtains combine energy performance and refined aesthetics to fit into all interior styles.

Why choose a thermal curtain?

Winter thermal curtain: stop heat loss

Even with double glazing, a window can lose up to 15% of a room's heat. The thermal lining of our curtains creates an invisible shield that traps warm air and limits exchange with cold glazing. The result: a more stable temperature, an immediate feeling of comfort, and reduced heating needs by up to 15%. To maximize this effect, consult our guide on which way to hang a thermal curtain.

Summer thermal curtain: the anti-heat barrier

In summer, the technical side of our curtains reflects infrared rays and limits the greenhouse effect behind your windows. A south-facing room stays cool longer, without air conditioning. This is particularly effective on bay windows and large glazed surfaces exposed to direct sunlight. For sliding windows, discover our tips on how to hang curtains on a sliding window.

Thermal curtain for energy savings

According to ADEME, windows account for up to 15% of a dwelling's heat loss. A properly installed thermal curtain, touching the floor and extending beyond each side of the frame, can halve these losses. Over a full heating season, the investment is quickly recouped on your heating bill.

Thermal curtain for old houses and single glazing

Old homes with single glazing or aging joinery are most exposed to heat loss. Our thermal curtain compensates for these structural weaknesses without requiring renovation work. It is the immediate solution for tenants and owners who cannot or do not wish to replace their windows.

Thermal curtain for the living room

The living room is often the room most exposed to temperature variations, especially when it opens onto a large bay window or terrace. A well-chosen thermal curtain creates a warm and regulated atmosphere there all year round. Consult our article thermal curtain for the living room: create a cocoon of warmth and silence and our collection of curtains for living room windows.

Thermal curtain for the bedroom

A bedroom that is too cold in winter or too hot in summer directly disrupts sleep quality. The thermal curtain stabilizes the night temperature and limits variations between night and sunrise. Discover our collection of curtains for bedrooms.

How to choose the right thermal curtain?

The lining: the heart of performance

The effectiveness of a thermal curtain depends on the quality of its insulating lining. The best linings are composed of several layers: a decorative outer face, a technical layer of polyester or fleece that traps air, and sometimes a metallized face that reflects heat. The thicker and denser the lining, the more effective the insulation.

Installation: three essential rules

A poorly installed thermal curtain loses most of its effectiveness:

It must touch the floor to prevent air exchange from below.
It must extend 15 cm on each side of the window frame to eliminate leaks at the edges.
The insulating side must face the window in winter to block the cold, and face the room in summer to reflect incoming heat.

Thermal curtain or thermal and soundproof curtain?

If your home only suffers from heat loss, a thermal curtain is sufficient. If you combine thermal insulation and noise pollution, our thermal and soundproof curtains address both problems in a single product. For entrance doors, consult our collection of thermal curtains for entrance doors.

FAQ: thermal curtains

How do thermal curtains work?

Their insulating polyester or fleece lining creates an air gap between the glazing and your interior. This barrier limits thermal exchange in both directions: it retains heat in winter and blocks external heat in summer.

Does a thermal curtain replace double glazing?

It does not fully replace it but effectively compensates for its limitations, especially with single glazing or aging joinery. It is an immediate, complementary solution, requiring no work.

Which way should the thermal lining be placed?

Insulating side facing the window in winter to block the cold. Insulating side facing the room in summer to reflect incoming heat. Our complete guide on which way to hang a thermal curtain details this rule step by step.

Can a thermal curtain be combined with a sheer curtain?

Yes. A light sheer curtain in front of your thermal curtain allows you to manage light during the day while maintaining active insulation in the evening.

How to maintain a thermal curtain?

Machine wash at 30°C recommended. Avoid tumble drying, which can damage the technical lining. Air dry to preserve insulating properties.

Are thermal curtains suitable for all rooms?

Yes. Living room, bedroom, office, entrance: anywhere a window generates heat loss in winter or excessive heat in summer.

What is the lifespan of a thermal curtain?

With proper maintenance, several years. The technical lining retains its insulating properties over time, provided washing instructions are followed.

Order your thermal curtain today

Our custom-made thermal curtains are designed to combine energy efficiency and aesthetics. Choose a comfortable interior all year round, without any work.