Sanyou London Pvt Ltd

Menu
Click here to download the Product Catalogue for Vacuum Insulated Curtain (VIC).

To request latest version of the product catalogue and sales price,
please reach out to our Customer Service Team at info@sanyoulondon.com

No Need to Replace Windows
VIC is the world’s first disruptive curtain with vacuum insulation. It delivers real energy savings without contractors, scaffolding, or structural changes, and is easy to transport and install as DIY. We are not here to disrupt the glass industry or replace your beautiful windows. VIC simply minimises cooling loss in hot climates and heating loss in cold climates—making homes and buildings more comfortable and energy-efficient.

Product Description

Ü WORLD’S FIRST CURTAIN WITH VACUUM INSULATION

The VIC is a unique curtain system where the back layer is made of durable cotton and stitched with 200 mm × 200 mm square pockets. Into each pocket, users place a removable 3 mm thick vacuum insulation panel (VIP). The front layer is made from a decorative silk, satin, or polyester fabric. Pockets are spaced 10 mm apart, allowing the curtain to slide and fold like any regular curtain. This innovative design gives VIC a verified thermal conductivity of 13.1 mW/m·K and a U-value of 1.87 W/m²·K, making it far more insulating than traditional curtains or linings.

 

Ü VIC is developed for hot climates like Riyadh, Saudi Arabia

In cities with high cooling loads and glass-heavy buildings, VIC helps keep indoor spaces cooler by slowing heat gain through windows. Traditional curtains in places like Riyadh often look good but offer inadequate insulation. VIC retains cooling much better. For example, if you have single glazing with a 50 mm air gap next to the curtain, with a 7.8°C annual average temperature difference in Riyadh, switching from a Sheer Decorative Curtain (U = 5.52 W/m²·K) to VIC can save around 32 kWh/m² annually, or about 33% cooling energy—without altering or replacing windows. This makes VIC a practical energy-saving solution in both residential and commercial settings. This translates to real cooling cost reduction without disturbing the glass or the building structure.

 

Ü Simple to install, DIY and easy to handle

VIC is installed using standard curtain rods and clips—just like an ordinary curtain. Although this VIC is a bit heavier than standard curtains, its weight is completely bearable. If a customer wishes to replace windows with the hope of achieving a better U-value or thermal performance, then let’s be real—the cost of installation is at least 300% higher than the product itself. There is a shortage of building contractors in the UK, and scaffolding costs are high. Even then, customers often have to wait for months, causing prolonged disruption. Therefore, many customers choose not to replace their windows and end up paying higher energy bills due to single-glazed windows, partially contributing to the cost-of-living crisis in the UK/EU. No contractors or scaffolding are needed. Users can insert the VIPs into the back pockets themselves. The modular pocket system makes the curtain lightweight, foldable, and easy to transport, as it uses small VIP segments instead of one large vacuum panel. This makes VIC ideal for homeowners, renters, and building managers seeking fast and affordable insulation improvements.

 

Ü Real energy savings for UK homes, without replacing windows

Around half of UK homes are still not adequately insulated, and replacing windows is costly, disruptive, and slowed by a shortage of installers—and very expensive. VIC offers a simple alternative. For example, if you have single glazing with a 50 mm air gap next to the curtain and replace a Light Decorative Curtain (U = 4.63 W/m²·K) with VIC (U = 1.87 W/m²·K), you can save 30.7 kWh/m² of heat loss per year—a 30% energy saving during 160 cold days with a 20°C temperature difference. While VIC is not a sealed system like a window (and edge heat loss is possible, as with all curtains), the overall performance still makes a significant impact. In the UK, replacing single-glazed windows in heritage buildings is often restricted under the Planning (Listed Buildings and Conservation Areas) Act 1990, which protects around 500,000 listed buildings. These windows are often original and form a key part of the building’s historic character. Modern replacements can alter the appearance and fabric of these structures, so listed building consent is required and often refused unless changes are proven to be both necessary and sympathetic to the original design. VIC offers a practical and reversible solution for improving thermal comfort in such buildings, without compromising their heritage value.

Key Characteristics

Ü Thermal Performance: VIC delivers a thermal conductivity of 13.1 mW/m·K and a U-value of 1.87 W/m²·K, offering real insulation benefits far superior to any curtain in the world. This is why it is recognised as the world’s first Vacuum Insulated Curtain—helping to reduce heating and cooling bills all year round.

 

Ü No Need to Replace Windows: Whether your home has single or double glazing, VIC works alongside your existing windows to deliver competitive energy savings—especially useful in heritage homes, rentals, or where costly replacement is not an option.

 

Ü DIY-Friendly and Easy to Install: Installed just like any regular curtain using standard rods and clips—no installers, no scaffolding, and no disruption. Each curtain comes with removable VIPs that slot easily into stitched back pockets, giving users full control.

 

Ü Adapted for Both Cold and Hot Climates: From cold UK winters to hot cities like Riyadh, Saudi Arabia, VIC reduces energy loss through windows—whether it’s keeping warmth in or keeping heat out—delivering up to 30% energy savings, verified by climate-specific calculations.

 

Ü Designed for Everyday Use: The 200 mm × 200 mm pocket grid and 10 mm spacing make VIC foldable, slideable, and functional like a normal curtain. It fits beautifully into living rooms, bedrooms, and offices while actively insulating without changing your routine.

 

 

Ü Smart, Elegant and Cost-Effective Innovation: Behind the elegant decorative fabric lies cutting-edge vacuum insulation. VIC is not just an upgrade in style—it’s a breakthrough in window energy management, proudly developed for modern buildings and historic homes alike.

Key Highlights

Ü World’s First Curtain Engineered with Vacuum Insulation Technology

VIC is the only curtain designed with removable vacuum insulation panels (VIPs) stitched into the fabric. It looks and works like a normal curtain, but with a U-value of 1.87 W/m²·K, it keeps your home warmer in winter and cooler in summer—without changing your windows.

 

Ü Real Energy Savings in Hot and Cold Weather

Whether you’re trying to keep warm in a cold UK winter or stay cool in a hot city like Riyadh, VIC can make a big difference. It will save considerable amount of energy by minimising heat loss in colder climates, and cooling loss in hotter places—just by changing your curtain.

 

Ü No Fuss, No Builders, Just Hang and Use

 

VIC goes up like any regular curtain, using curtain rods and clips. You don’t need installers or scaffolding. It’s a simple upgrade that you can do yourself—perfect for heritage buildings, rented flats, high-rise buildings, villas, commercial office buildings or any home where changing the windows isn’t possible or too expensive.

Thermal Performance

CLICK HERE to CONTACT US

Energy Savings Performance

CLICK HERE to CONTACT US

Dynamic Applications of VIW

1. Homes and Residential Buildings

VIC is ideal for everyday homes across the UK, Europe, and the Middle East—especially those with single or older double glazing. Many houses lose a large amount of heat in winter or cooling in summer through their windows. VIC helps cut down on this energy loss with vacuum insulation built into each curtain. It’s perfect for homeowners who want to improve comfort, reduce energy bills, and avoid the high cost and disruption of replacing windows.

 

2. Heritage and Listed Buildings

In the UK, thousands of listed buildings cannot legally replace their original windows without special permission, which is often refused. VIC is the perfect solution for these cases. It offers a reversible, non-invasive way to reduce heat loss while keeping the original windows untouched. It’s especially useful in heritage cities like London, Edinburgh, and York, where building regulations are strict but comfort is still needed.

 

3. Rented Properties and Student Accommodation

Tenants and landlords often struggle with cold or overheating rooms, but permanent changes to windows aren’t allowed. VIC offers an easy and removable option—installed just like a normal curtain—that improves insulation without altering the building. It helps tenants stay warm or cool, and landlords can advertise energy-conscious features without major renovation costs.

 

4. Hotels and Hospitality Settings

Hotels need to keep guests comfortable in all seasons while managing high energy use. VIC improves the thermal performance of guest rooms, lounges, and dining areas without spoiling the design or requiring building works. It quietly helps reduce heating and cooling costs and can be chosen in elegant finishes to suit luxury interiors.

 

5. Commercial Offices and Workspaces

Large windows are common in modern office buildings, especially in cities. But they bring in heat during summer and lose warmth in winter. VIC can be used to reduce energy use in air-conditioned or heated spaces, helping companies meet sustainability goals and reduce bills. It installs easily and causes no disruption to work areas.

 

6. Villas and High-Rise Flats in Hot Climates

 

In the Middle East, where glass walls and large windows are popular, VIC helps stop indoor spaces from overheating when the air conditioning is off or struggling. In cities like Riyadh or Dubai, switching from regular curtains to VIC can save around 33% of cooling energy, making rooms more comfortable and cutting electricity bills—all without changing the glass or disrupting the building structure.

CLICK HERE to CONTACT US

VIC PRODUCT DESIGN AND PRODUCT CODE (SL-VIC-GOLD)

CLICK HERE to CONTACT US

FAQs

FAQs about Vacuum Insulated Curtain (VIC)

VIC is the world’s first curtain that incorporates vacuum insulation panels (VIPs) into a standard curtain format. The back layer is stitched with 200 mm × 200 mm pockets, each designed to hold a 3 mm thick VIP. The front layer is made from decorative fabric (e.g., satin, silk, or polyester), allowing it to function like a normal curtain while offering superior thermal insulation.

It depends on your location, window type, and the curtain you’re currently using. Here are two examples based on real climate data and building conditions:

  • In the UK, if you have single glazing with a 50 mm air gap, replacing a Light Decorative Curtain (U = 4.63 W/m²·K) with VIC (U = 1.87 W/m²·K) can save 30.7 kWh/m² of heat loss per year—a 30% energy saving during 160 cold days with a 20°C temperature difference between inside and outside.
  • In Riyadh, Saudi Arabia, where cooling is the main concern, switching from a Sheer Decorative Curtain (U = 5.52 W/m²·K) to VIC (U = 1.87 W/m²·K)—again assuming single glazing and a 50 mm air gap—can save around 32 kWh/m² per year, or about 33% cooling energy, without having to replace the windows.

No. VIC is specifically designed to work with your existing windows, whether single or double glazed. It provides vacuum insulation benefits without needing costly window replacements or contractors.

Yes, due to the embedded VIPs, VIC is heavier than a normal curtain. The weight is manageable but it’s important to use a strong curtain rod or track system with secure wall fixings, especially for larger sizes.

Just like any regular curtain. It can be fitted using standard curtain poles and clips. Users insert VIPs into the stitched back pockets before hanging. No scaffolding, tools, or professional installers are needed.

Yes. While VIC is available in standard UK sizes (e.g., W66″ × L90″), we also offer custom sizes to suit larger or non-standard windows. Just note: the larger the curtain, the heavier it becomes, so please choose suitable rail systems.

Yes—but only after all VIPs are removed from the pockets. Wash on a gentle cycle with mild detergent. Do not tumble dry. Hang to air dry naturally.

VIC has been tested with a:

  • Thermal conductivity (K-value) of 13.1 mW/m·K
  • U-value of 1.87 W/m²·K

These values are significantly better than standard blackout or thermal curtains and close to high-performance window systems.

Yes. The VIPs are recyclable and have a service life of at least 20 years. Even after this time, they still provide useful insulation, although vacuum pressure may slightly reduce.

Simply remove the damaged panel and dispose of it with general waste or as advised by your local authority. If dust escapes, ventilate the area, wear gloves and a mask, and gently clean the surface. Replacement VIPs can be ordered directly.

Yes. VIC is ideal for heritage or listed buildings where window replacement is restricted under the Planning (Listed Buildings and Conservation Areas) Act 1990. VIC adds insulation without altering the original window or structure.

Not necessarily. The front fabric can be chosen in various colours and finishes, and you can keep it open during the day. When closed, it adds a layer of insulation while offering an elegant look.

VIPs are sealed and maintenance-free. Just avoid bending, crushing, or exposing them to water or direct impact.

Absolutely. VIC is ideal for hotels, offices, villas, student accommodation, and any setting with large window areas or energy-saving goals. It’s especially useful in buildings where window upgrades are impractical or too costly.

Yes, with proper installation. Avoid using cords or tiebacks within reach of children. Do not allow children to pull or climb the curtain, as it’s heavier than standard types.

VIC’s curtain fabric may vary depending on use and cleaning, but the VIPs are expected to last 20+ years, retaining most of their insulation performance throughout that time.

Yes. VIC’s modular design allows you to remove VIPs before storing, washing, or transporting (e.g., during a house move). This reduces weight and prevents damage during handling.

A 50 mm vertical air gap between the window and VIC is recommended for optimal thermal performance, based on standard heat transfer assumptions used in UK CIBSE and BS EN ISO guidelines.

VIC follows general safety principles and material compliance in line with UK GPSR 2005 and EU GPSR (EU) 2023/988. CE/UKCA labelling depends on future product categorisation and market jurisdiction, which can be confirmed at the time of sale.

Thermal conductivity (K-value) is measured in mW/m·K, and the lower the value, the better the insulation. VIC uses vacuum insulation panels (VIPs) combined with cotton and silk/polyester layers to deliver exceptionally low thermal conductivity compared to conventional curtains.

Region Curtain Type Avg. Thermal Conductivity (mW/m·K)
🌍 Global VIC (Vacuum Insulated Curtain) 13.08
🇬🇧 UK Light Decorative Curtain 65
🇬🇧 UK Thermal/Insulated Curtain 40
🇬🇧 UK Blackout Curtain 35
🇸🇦 Middle East Sheer Decorative Curtain 90
🇸🇦 Middle East Lined Curtain 70
🇸🇦 Middle East Modern Blackout Curtain 50

Compared to VIC in terms of thermal conductivity performance:

  • VIC is 5× better than UK light decorative curtains
  • 3× better than UK thermal/insulated curtains
  • 2.7× better than UK blackout curtains
  • 6.9× better than Middle East sheer curtains
  • 5.4× better than Middle East lined curtains
  • 3.8× better than Middle East blackout curtains

U-value (W/m²·K) measures how much heat is lost through a material. The lower the U-value, the better the insulation. VIC has been tested to achieve a U-value of just 1.87 W/m²·K, significantly outperforming traditional curtains used in both the UK and Middle East.

Here’s the full comparison:

Region Curtain Type U-value (W/m²·K)
🌍 Global VIC (Vacuum Insulated Curtain) 1.87
🇬🇧 UK Light Decorative Curtain 4.63
🇬🇧 UK Thermal/Insulated Curtain 2.38
🇬🇧 UK Blackout Curtain 2.51
🇸🇦 Middle East Sheer Decorative Curtain 5.52
🇸🇦 Middle East Lined Curtain 4.40
🇸🇦 Middle East Modern Blackout Curtain 3.45

Compared to VIC:

  • VIC is 2.5× better than UK light decorative curtains
  • 27% better than UK thermal/insulated curtains
  • 25% better than UK blackout curtains
  • 3× better than Middle East sheer curtains
  • 2.4× better than Middle East lined curtains
  • 1.8× better than Middle East blackout curtains

This shows VIC delivers superior insulation across different climates and curtain types—offering real, measurable improvements in thermal performance for both cold and hot regions.

Yes. By blocking external heat gain through windows, VIC reduces the load on air conditioning systems. In Riyadh, VIC has been shown to save around 32 kWh/m² annually compared to sheer curtains. That’s 33% energy saving, which also helps AC systems run more efficiently and potentially last longer.

Unlike regular curtains, VIC contains vacuum insulation panels (VIPs)—a high-performance material that dramatically slows down heat transfer. While traditional curtains rely on fabric thickness, VIC uses physical vacuum barriers to resist both conduction and convection, much like modern vacuum-insulated windows—but without needing to replace any glass.

Yes. VIC works alongside any glazing type. It is particularly effective when used with single glazing, where window heat loss is highest. It also enhances the performance of older double-glazed windows, offering a cost-effective alternative to full replacement.

Yes. A 50 mm vertical air gap between the glazing and the curtain helps maximise insulation performance by adding a still air layer. This setup was used in all performance calculations for both the UK and Middle East case studies.

VIC is available directly from us. For custom designs or sizes, please contact us with your requirements, and don't forget to include specific product code and if you have a particular decorative colour in mind.

For more information or to request a price quotation, please reach out to us at: Email: info@sanyoulondon.com

Telephone: +44 204 570 5354

Scroll to Top