Ceiling insulation for boler

[Mollie]

I have a large piece of my 1968 boler ceiling missing and I want to replace. Has anyone done this before and if so what product do you use to attach ? 3M?

[Jon in AZ]

I assume the insulation material is Ensolite? Do you have the missing piece or a piece to patch in?

For small areas I've heard of a lot of different adhesives used, but for large sections the most common recommendation seems to be 3M 90 High Strength. I believe it has greater heat tolerance than 3M 77, which would be important for the ceiling.

[Mollie]

Yes it's 4ft by 4ft piece. Not looking forward to the install as it's definitely a two man job . Thanks

[Pamelia]

3M 5200 Epoxy can be purchased from a marine supply shop and it's excellent and permanent!! I'm using it for some framing I'm doing so it'll never come off.