I have steam pipes running through my house's basement to serve radiators upstairs. Some run through my collection of aged Belgian beers. I need to insulate the pipes to keep them from heating the beers too much.
They're old pipes, mostly iron I guess. They're all over 25' from furnace.
Pipe circumferences are 5.25”, 6”, 7.5”, and 9”, which I'm told translates into diameters of 1.67', 1.9", 2.38", and 2.87". There are also plenty of joints and bends. It's 30 feet, total.
I've been told fiberglass insulation over steam pipes will degrade over time into carcinogenic dust, and to use rockwool/mineral wool. And I'm shocked by the low R value of fiberblass pipe wrap (it's like 1.2).
Another option seems to be rubber black lap seal pipe wrap insulation
, which has a pretty good R-value (4.9), and I think I can find in small lengths at insulation stores.
Obviously, higher R-Value would be better. And I'd love (if it makes sense) to use all large-size, which would be easier to buy and use, and might fit over some of the joints.
I'm not a plumber or a steam geek (though I respect the hell out of you guys), so please talk to me like a newbie! Thanks for any help!