What is the Truth Behind Smart Glass TDS Documents

Last month, I received a call from a renowned design firm in Bangalore. We’ve worked with them on multiple high-end projects, and this time, they wanted our smart glass technical data sheet (TDS) and price list. Naturally, we shared the required documentation. However, they were also collecting TDS documents from other smart glass and smart glass film vendors for comparison.

This made me wonder, is a TDS truly a reliable way to compare Smart Glass or Smart Film products?

Are Technical Data Sheets Misleading?

Out of sheer curiosity and a commitment to transparency, our team started gathering TDS documents and product samples from various prominent companies offering smart glass and switchable privacy film solutions.

When we compared the lab-tested samples against the values stated in their respective TDS documents, the results were nothing short of alarming.

What We Found While Testing Smart Glass Film & Switchable Privacy Film Samples

Here are just a few examples of the inconsistencies we discovered:

• Visual Light Transmission (VLT) discrepancies: In several cases, VLT values in the TDS differed by 3–5%. One Bangalore-based smart glass company had a shocking 9% difference between the claimed and actual VLT.
• TDS only lists the film's optical clarity, not the total system: For example, if a smart film has a transparency of 91% and is installed on a 12mm tempered glass panel (which has an 82% transparency), the combined transparency isn't 91%, it’s just 80%. Most TDS sheets ignore this critical detail.
• Exaggerated Claims: One Ahmedabad-based vendor claimed a VLT of 95%, yet the sample provided tested at just 78%. The film was visibly discolored and showed signs of aging, despite never being installed!
• Unrealistic Warranty Promises: Companies that started operations as recently as 2021 were offering 10-year warranties, despite having no track record of even 3 years.

The Problem with Relying Solely on Smart Glass TDS Documents

Let’s face it: TDS documents are not verified by independent authorities. They're easy to tweak, lack transparency, and provide no real guarantees. Relying on them blindly during product specification is a mistake, especially for high-stakes architectural or commercial projects.

So how can you ensure that the switchable privacy film or smart glass film you’re specifying is truly the best?

How to Ensure You're Getting Top-Quality Smart Glass Film

1. Get a Physical Mock-Up

We offer a free mock-up (up to 8 sq. ft.), big enough to test optical clarity, power functionality, and other real-world variables before making a full-scale commitment.

2. Test the Combined Optical Clarity

Don’t just ask for film specs, insist on testing the actual glass + film combination. Use a portable optical meter to get real, measurable results. This holds the vendor accountable and removes guesswork.

3. Verify Track Record

We have completed 300+ mid-to-large scale smart glass projects across India. Always ask for project references and past client feedback before choosing a vendor.

4. Discuss Lighting Conditions

Lighting affects clarity. Have a conversation with your vendor about the ambient and task lighting in the space. The right setup can greatly improve the perceived transparency of your smart glass.

5. Ask for Certifications

Make sure the switchable glass film or laminated smart glass you specify comes with valid product certifications from reputed testing authorities.

Conclusion: Trust What You See, Not What’s Printed

In the rapidly growing world of smart glass film and switchable privacy film, flashy marketing and overpromised specs are all too common. Architects, designers, and contractors must demand real-world proof, not just paper.

If you're working on a green building, healthcare facility, office, or high-end residential space, let Privetek provide a transparent, tested, and trustworthy smart glass solution.

Get a free mock-up today and see the truth for yourself.