frequently asked questions


What is the difference between Dream Glass Group and other suppliers?

We manufacture our own PDLC film unlike most suppliers which purchase PDLC film from abroad and laminate locally. Overall quality is assured as we control optical properties, operation and sizes. We have our own laboratory with scientists working around the clock investigating new formulas and alternative raw materials.

Where are we located?

Our Headquarters, Laboratory, R&D and factory are based in Madrid, Spain. In addition, we our present in other geographical regions through our certified licensees and distributors; see our distribution network.

What geographical regions does DGG cater?

DGG operates on a worldwide level.

How can I place an order or request further information?


Which industry sectors does DGG cater?

DreamGlass® products are constantly being implemented in new and diverse industries. Our core competency includes installations for industries sectors such as:

  • Hospitality
  • Corporate
  • Healthcare
  • Residential
  • Retail
  • Education
  • Transportation
  • Advertising
What are some of the benefits of DreamGlass®?
  • Immediate control of privacy
  • Improvement in users comfort, with greater security.
  • Efficient use of space in building environments
  • Cost-effectiveness relative to other smart window technologies.
  • Energy savings through reduced A/C cooling.
  • UV protection and stability (blocks over 99% of UV rays)
  • Excellent contrast for rear projection purposes
  • 5 year warranty
  • Easy maintenance
  • Aesthetically attractive
What is the delivery time?

Generally 30 days. This may vary depending on type of product and quantity.

Can I order a sample?


What are the maximum dimensions?

We manufacture 1800mm width PDLC rolls of 50 lineal meters. At the moment, we can supply a panel with a maximum size of 1800mm width * 4600mm length. We can also handle 2100mm width panels and laminate two or more PDLC films.

At what voltage do the panels operate?

Between 60 – 65 VAC.

What are the general characteristics?

Click here to see the general characteristics of DreamGlass®

How do I install a switchable glass unit?

Click here to see our download guide.

Can I apply any silicone?

No. Only silicone supplied by Dream Glass Group must be used. Otherwise warranty will not apply.

What transformers should be used?

We supply specifically designed transformers with each order.

How many transformers are necessary?

This will depend on the surface and number of operating groups desired. 

Where are electrical connections placed?

Electrical connections (referred to as Bus Bars) are recommended to be placed on 2 opposite sides of glass panels (either width or length). In some cases connections may also be placed on one side only.

When DreamGlass® panels are ON, are they completely transparent?

No. Visual Light Transmission (VLT) is approximately 80% when switched ON. All panels present a degree of haze which is part of the product make up.

When you look at DreamGlass® panels from an angle while they are ON, are they less transparent?

Yes. When the panels are looked at from an angle, haze levels are accentuated.

When switched OFF, is surface completely opaque?

No, it is translucent which means some light still passes through.

What is the power consumption?

Under 10W/m2.

When do the panels consume electricity?

When it is in ON position; in transparent state.

What is the lifetime expectancy?

Sample batches from our production are continuously tested (ON/OFF sequences). In addition, they undergo severe weathering tests in our ageing machine. Based on this, life expectancy is very long (over 10 years).

What maintenance is required?

Click here for our maintenance manual.

Can panels be curved?

Yes. In fact panels can also be made in shapes.

Can panels be tempered?


Can panels be drilled?


Can panels be made in a double glazed unit?

Yes, inclusively they can also be triple glazed or more.

Can panels be Bullet Proof?

Yes, under certain compositions.

Can panels be Fire rated?

Yes, under certain compositions.

What are the acoustic properties?

This depends on the glass composition. We can manufacture our products with special acoustic interlayers to offer higher acoustic ratings.

Can panels be used in bathrooms or humid areas?

Yes, DreamGlass® products are IPx7 certified.


Can DreamGlass® be supplied in alternative colors?
Yes. The Standard color is milky white. We also offer a blue/grey tint. Other colors are available on demand.
Can panels be used for external applications?


Can panels be used in doors?

Yes, both automatic & manual

Can panels be used as high definition screens?

Yes. With the use of a projector, image is retro projected onto surface of glass to offer a high definition image.

Can panels be laminated with other types of glass?

Yes, such as Mirror, Color Tinted, Fire rated etc.

What warranty is offered?

Standard warranty is 5 years. For some products, this may be different.

Can I cut my panel once it has been manufactured?

Unfortunately it cannot.

Calle Cañada 15.
Paracuellos de Jarama, Madrid
+34 91 658 4245