Welcome! Here are the website rules, as well as some tips for using this forum.
If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
What is this radiator cover insulated with?
The other day, my electrician was helping me move a radiator cover so that we could access the wall behind it. He expressed a hypothesis that I did not like: this radiator cover, and all my other radiator covers, had a big fat slab of asbestos on top.
Is that really what is shown in the picture below? If so, should I do anything about it? If every other steam-heated house has had these in there for the past 80 years, the numbers suggest this is not a particularly imminent threat. If, on the other hand, this is unusual, I can't really say that for sure.