Hello welcome to the Forum. As Rob has mentioned there has been quite a lot written about asbestos in various topics.
I have done some work listing all the suppliers for QE2 that had placed adverts in the Cunarders' magazine 1969. The list is in topic board "A ship of Many Parts"
https://www.theqe2story.com/forum/index.php/topic,2360.0.htmlI remembered that Marinite was one of the suppliers so I looked out the magazine so that I could copy the full text of the advert for you.
This is the text in the advert for Marinite on page 64 of the Cunarders' 1969 magazine.
"Elizabethan enterprise .....yesterday and today (photo of Elizabethan Galleon)
Over 350 years separate this splendid Elizabethan Galleon from our own superb Queen Elizabeth 2- each a magnificent testimony to a momentous shipbuilding era. New concepts, new needs, and new materials have now changed the picture beyond recognition. Important among the indispensable materials of modern ship construction is non-combustable Marinite. Already used in over 1500 ships, it was a natural choice for the Queen Elizabeth 2 where it makes a major contribution to safety as built in fire protection in the form of bulkheads, linings, ceilings and doors throughout accommodation spaces and public rooms. "
Marinite
Non-combustible sheet Made in Scotland
Marinite Ltd., Petershill Rd., Springburn, Glasgow, N1
I hope this helps with your research and I hope you keep us informed.