Hi, I put your request out on our listserve (this is our website forum) because it will reach more individuals more quickly. You can sign up for it at the top of the articles page where there is a tab to direct you. The following response came immediately.

We’ve had to tape coated glass from time to time due to it not being laminated, with mixed results. In all cases though, we’ve always been able to clean off any residue without damaging the coating. Mostly, there is none. Obviously this is dependent on nature of the tape in use. My suggestion, ask your glass supplier for a sample and tape it up, then leave it for a representative period of time and see what happens.

With that thickness of glass over those dimensions, if the glass gives out, even with tape you’re likely to suffer damage to the works from heavy, unsupported shards.

Mark Slattery
Senior Art Handling Technician.
The National Gallery
Trafalgar Square
London
WC2N 5DN

You might get more responses if you describe your situation again yourself.
Good luck.

Ashley